Low Voltage Analog Circuit Design Based on the Flipped Voltage Follower
|
|
- Douglas Gordon
- 5 years ago
- Views:
Transcription
1 International Journal of Electronics and Computer Science Engineering 258 Available Online at ISSN: Low Voltage Analog Circuit Design Based on the Flipped Voltage Follower Neeraj Yadav 1, Sanjeev Agrawal 2, Jayesh Rawat 3, Chandan Kumar Jha 4 1, 3, 4 Assts. Proff. Techno India NJR Inst. Of Technology Udaipur 2 Associate Proff. MNIT Jaipur, MNIT Jaipur - 1 neermnit@gmail.com, 2 san@mnit.ac.in, 3 Jayeshrwt@gmail.com, 4 Er.cjha@gmail.com Abstract: The desire for portability of electronics equipment generated a need for low power system in battery products like hearing aids, implantable cardiac pacemakers, cell phones and hand held multimedia terminals. Low voltage analog circuit design differs considerably from those of high voltage analog circuit design. This paper present the basic cell knows as flipped voltage follower for low voltage/ low power operation. The detailed classification of basic topologies derived from the FVF cell is presented and there is a low voltage current mirror based on FVF cell has been presented. All the Circuit has been simulated using Hspice tool 0.18µm CMOS Technology. Different quality factors such as frequency response, power consumption are considered. A compression also made between previous current mirror and new designed current mirror. The layout of the current mirror has been also designed using Cadence tool. Keywords: Analog integrated circuits, low power low voltage design. 1-INTRODUCTION Downscaling of CMOS process has forced analog circuit to operate with continuously decreasing supply voltage. Downscaling of CMOS has been mainly due to need of reduced power consumption of the digital circuitry in mixed mode very large scale integration (VLSI) system and to prevent oxide breakdown with decreasing gate oxide thickness. In addition portable electronic equipments are based on the low power consumption and low supply voltage. Several technique have been presented to reduce supply voltage requirement in analog and mixed signals circuits, among them folding triode mode and sub threshold operation of MOS transistor, folding gate techniques and current mode processing [1]. 2. Voltage Follower A basic cell called voltage follower or voltage buffer used for low voltage analog circuit design. A basic cell for low voltage/ low power is identified. Let us consider the common drain amplifier frequently used as a voltage buffer. If body effect is ignored the circuit follows the input voltage with a dc shift i.e. V o = V i + V sgm1 where V sgm1 is the source-to-gate voltage of transistor M 1. There are some drawback of the voltage follower, in many applications the output resistance is not enough low. It can be only be decreased by increasing the Trans conductance gain g m. this require a large current biasing and large W/L dimension.
2 Low Voltage Analog Circuit Design Based on the Flipped Voltage Follower 259 Figure 1 Voltage Follower The gate source voltage of M1 varies with the input signal, this leads to distortion that increase at high frequency. The slew rate is nonsymmetrical since the sourcing capability is very large, while the sinking capability is limited by the bias current I b. 3. Flipped Voltage Follower It is essentially a cascade amplifier with negative feedback where the gate terminal of M1 is used as input terminal and its source as output terminal. It is characterized by very low output impedance due to shunt feedback provided by M 2, high low supply requirement close to a transistor threshold voltage V TH, low static power dissipation and high gain bandwidth. The name flipped voltage follower is based on the fact that FVF is biased on the drain side rather than the source side. Output current variation are absorbed by M 2 which is denoted current sensing transistor, while the current in M 1 remain constant, due to this the gate source voltage of M 1 remain constant and distortion remain low even at higher frequency. A practical limitation of the FVF cell is that it gives very small input and output signal swing. Figure 2 Flipped Voltage Follower The circuit in Figure 2 is another voltage follower where the current through transistor M1 is held constant, independent on the output current. It could be described as a voltage follower with shunt feedback. Neglecting the short-channel effect, V sg1 is held constant, and voltage gains are unity Resistance Estimation of The FVF Cell Resistance at node Y: The open loop gain analysis of FVF cell and small signal analysis are shown in the figure 3 [2].
3 IJECSE,Volume1,Number 2 Neeraj Yadav et al. = + + (1) + = + V gs1 =V g1 -V s1 and V gs2 =V g2 -V s2 From eq. 1 we get Figure 3 Open- loop gain analysis of FVF cell = (2) = + + (3 ) Figure 4 Small signal diagram of open loop gain analysis of FVF cell for node y Substituting the value of V s1 from eq. 3 and rearranging = ( + + ) (4) Using approximation g m1 r o1 >1 (5) g m1 r 02 >1 = Resistance at Node X:
4 Low Voltage Analog Circuit Design Based on the Flipped Voltage Follower 261 The resistance at node x can be determined by the small signal analysis of open loop gain analysis of FVF cell. Small signal diagram of open loop gain analysis of FVF cell for node x is shown in figure 3.7 = + + (6) + = (7) = Rearranging the equation 1+ ( 1 ) Figure 5 Small Signal diagram of open-loop gain analysis of FVF cell for node x (1+ 1 (8) 1 + / Using the approximation 1+ = (9) Open loop gain is..( ) = ( )= Using gain of the common gate amplifier i.e. ( ) ( +1) = (11) Using equation and two approximations we get = ( +1) = + = ( )= Close loop gain
5 IJECSE,Volume1,Number 2 Neeraj Yadav et al. = 1+ = = 1+ ( ) ( ) (1+ ) 1+ ( ) It is observed that R CLX is very low resistance. Note that FVF can operate at a very low voltage supply, and that it is the operating condition we are interested in. By the analysis we get the valid range of operation for the input signal ( ( ) < < ( ( ) ( ) (12) It is clear that the valid input signal range reduces with the transistor threshold voltage, which limits the applications of the FVF in deep submicron technologies. 4. Basic FVF Structures 4.1. FVF current sensors (FVFCS) The FVF cell can also considered to as a current sensing cell, and when used in this way it will be called a FVF current sensor (FVFCS). Let us consider node in Fig. 6 as the input current sensing node and that all transistors are properly biased to work in the saturation region. Due to the shunt feedback provided by transistor M 2, the impedance at node x is very low and, this way, the amount of current that flows through this node does not modify the value of its voltage. Note that node x can source large current variations at the input and the FVF translates them into compressed voltage variations at output node.this voltage can be used to generate replicas of the input current as shown in Fig. 6 by means of transistor M5. Fig. 7 shows the dc response of the circuit in Fig. 7. The output and the input currents are related through the expression I out = I in +I b. The current can be easily removed from the output node using current mirroring techniques if this is needed for a specific application. Figure 6 FVF Current sensor Apart from this particular operating condition, the FVFCS can be operated with very low voltage supply. The minimum supply voltage is = +2 ; where V TP is the transistor threshold voltage and V DSsat is the minimum drain-to-source voltage to maintain the transistor in saturation region.
6 Low Voltage Analog Circuit Design Based on the Flipped Voltage Follower 263 Figure 7 DC response of the FVFCS Structure 4.2 FVF differential structure (DFVF) The first differential structure based on the FVF cell can be built by adding an extra transistor connected to node x, as it is shown in Fig. 8 [1]. This structure called the FVF differential structure (DFVF). As indicated in the previous section, the impedance at node x is very low and its voltage remains approximately constant for large currents through transistor M 3. If we consider quiescent conditions when V 1 =V 3, and assuming the same transistor sizes for M 1 and M 3, the condition I DM1 = I DM3 = I b is satisfied. Differential voltage V 1 -V 3 generates current variations in M 3 that follow the MOS square law. This is a very interesting property of the DFVF as the maximum output current can be much larger than the quiescent current I b. Fig. 9 shows the dc transfer. Figure 8 Differential Flipped Voltage Follower Another characteristic of the DFVF is that the output is available as both a current (I DM3, or the current through transistor M 2 replicated by means of a current mirror), and a voltage (node y ). This feature can be advantageously employed to simplify the circuit implementations reducing both noise and number of poles and zeros. Finally, the DFVF can also be operated with very low supply voltage. The minimum supply voltage is, as in the case of the FVFCS = +2,. Once again, with a supply of VMIN DD there would be no room for variation of the input signals V 1 and V 3. It is easy to obtain an expression relating the expected variation of V 1 and V 3 with the minimum supply voltage which maintains the DFVF cell properly biased.
7 IJECSE,Volume1,Number 2 Neeraj Yadav et al. Figure 9 DC Response of the DFVF cell 4.3 FVF pseudo-differential pair cell (FVFDP): A FVFDP structure can be easily constructed by adding an extra transistor M 4 at node x in DFVF structure, as shown in Fig. 10. This structure is known as FVF pseudo differential pair (FVFDP). Fig. 11 shows the dc output currents I DM3 I DM4 versus the differential input voltage V 3 -V 4, in a typical case. The pseudo-differential pair also exemplifies the characteristic behaviour of a Class-AB circuit, where the quiescent output current I b can be much lower than the peak value. In this case, we have considered that, under quiescent conditions, V 1 =V 3 =V 4. That is, assuming perfect matching between transistors M 1,M 3 and M 4, the voltage at the gate of corresponds to the common mode of M 3 and M 4 : = =V CMi. If the common-mode value V CMi of input voltages V 3 and V 4 is not equal to 1V the dc output characteristic has the same shape, but a dc level shift is applied to the curves of transistor currents in opposite directions of the horizontal axis. Figure 10 Basic FVFDP Structure The main difference between the DFVF and the FVFDP is that the latter has a true differential output. The output current of the DFVF can be large if V 1 V 3 is positive and zero if V 1 V 3 is negative, while in the FVFDP we can have positive or negative large differential output currents (I out = I DM3 I DM4 ) depending on the value of the input differential voltage (Vin = V 3 V 4 ). This pseudo-differential pair can be also operated with a minimum supply voltage of = +2, as in the cases of the FVFCS and DFVF.
8 Low Voltage Analog Circuit Design Based on the Flipped Voltage Follower Current Mirror Figure 11 DC Response of the FVFDP structure 5. APPLICATIONS OF THE FVF CELL General properties A current mirror is an element with at least three terminals. The common terminal is connected to a power supply, and the input current source is connected to the input terminal. Ideally, the output current is equal to the input current multiplied by a desired current gain. If the gain is unity the input current is reflected to the output, leading to the name current mirror. Under ideal condition the current mirror gain is independent of input frequency, and the output current is independent of the voltage between the output and common terminals. Figure 12 Current mirror block diagrams referenced to (a) ground and (b) the positive supply Low Voltage Current Mirror Based On the Flipped Voltage Follower The well known flipped voltage follower (FVF) cell has been employed for realizing low voltage current mirrors. The minimum supply voltage requirement for the correct operation of the current mirror is equal to V TH +V DS, sat, making all of them compatible with the minimum power supply voltage requirement of the modern signal processing systems [J. Ramirez-Angulo, R.G. Carvajal., A. Torralba, J. Galan. A.P. Vega-Leal, J. Tombs, 2002]. One of the most widely used current mirror topologies in low-voltage signal processing is the conventional cascode current mirror is shown in Figure (2)
9 IJECSE,Volume1,Number 2 Neeraj Yadav et al. Figure13 Conventional cascade current mirror With regards to the voltage restriction the minimum supply requirement is given by, =( ) +, ( ) (12) Where V TH(M1) is the threshold voltage of the M 1 and V DS, sat(m1) is the saturation voltage of the M 7. Other important factors that establish the capability of the current mirror in Figure 3.4 to operate in a low voltage environment are the minimum input and output voltages [8]. The corresponding expression are given by (13) and (14), respectively =( ) (13) =, ( ) +, ( ) (14) = The input and output resistance of the current mirror in figure are given by 1 ( ) (15) = ( ). ( ). ( ) (16) An alternative topology of that shown in figure is based on the adaptive bias scheme given in Figure Figure14 Cascade current mirror with adaptive bias scheme. Another current mirror configuration that is widely used in low-voltage applications is that depicted in Figure 3.6. This is a cascode current mirror based on the FVF cell. The minimum required supply voltage and the minimum input voltage are also given by (1) and (2), while the minimum output voltage and output resistance are now [5] =, ( ) +, ( ) (16) = ( ).( ).( ) (17)
10 Low Voltage Analog Circuit Design Based on the Flipped Voltage Follower 267 Figure Simulation Results 6.1 Simulation result for voltage follower: The circuit for the voltage follower shown in figure is simulated using the Hspice tool for 0.18µm CMOS technology. Different parameters and dimensions used in circuit simulation are shown in the table. The value of the bias voltage (V b ), the input voltage (V i ), supply voltage (V DD ) and source voltage (V SS ) are chosen as 0.35V, 0,25V, 0.9V and 0V respectively. Table1 Transistor dimension for the voltage follower Transistor W[µm] L[µm] M M Figure16 DC transfer characteristics of voltage follower The DC transfer characteristics of the voltage follower are shown in the figure 16, here the input voltage varied from 0V to 0.6V with the increment of 0.001V. Here the output voltage of the voltage follower varied linearly with the input voltage. The frequency response of the voltage follower is also shown in figure 17. The total power consumption of the voltage follower is 9.108µw.
11 IJECSE,Volume1,Number 2 Neeraj Yadav et al. Figure 17.Frequency response of the voltage follower 6.2 Layout of the voltage follower: Layout of the voltage follower cell has been simulated using Cadance (virtuoso) for 0.18µm CMOS technology. The design rule check (DRC), layout versus schematic (LVS) done using Cadance. Shown in the figure Simulation Result for the Flipped Voltage Follower: Figure 18.Layout of the voltage follower The circuit for the flipped voltage follower is shown in the figure is simulated using Hspice tool 0.18µm CMOS technology. Different parameter used for the simulation is given below and the dimension of the transistor is shown in the table. The bias voltage (V b ), input voltage (V in ) supply voltage (V DD ) and the source voltage (V SS ) are given as 0.7V, 0.12V, 0.9V and 0V respectively. Table2 Dimension of the flipped voltage follower Transistor W[µm] L[µm] M M M Figure19.DC transfer characteristics of the flipped voltage follower
12 Low Voltage Analog Circuit Design Based on the Flipped Voltage Follower 269 The DC transfer characteristics of the flipped voltage follower are shown in the figure 19. Hera the input varies from 0V to 0.4V with the increment of the 0.001V.Here the output varies linearly with the input voltage. The transient analysis of the voltage follower is also shown in the figure 20.Frequency response of the flipped voltage follower is also shown in the figure 21.The total power consumption is the 7.109mm. Figure 20 Transient analysis of the flipped voltage follower Figure 21.Frequency response of the flipped voltage follower 6.4 Layout for flipped voltage follower: Layout of the flipped voltage follower cell has been simulated using Cadance (virtuoso) for 0.18m CMOS technology. Layout diagram of the current mirror is shown in the figure22. The design rule check (DRC), layout versus schematic (LVS) done using Cadance. Figure 22.Layout of the Flipped Voltage Follower 6.5 Simulation result for cascode current mirror The circuit of cascode current mirror, shown in Figure 12, has been simulated using tool Hspice for 0.18 µm CMOS technology. The transistor dimensions are listed in Table1. The values of bias voltage (V BIAS ), supply voltage ( V DD ) and source voltage ( V ss ) are chosen as 0.98 V, 1.5 V and 0 V respectively. Table3.Transistor dimensions of cascode current mirror.
13 IJECSE,Volume1,Number 2 Neeraj Yadav et al. Transistor W[µm] L[µm] M 5 -M M 1,M 2,M M The frequency response of cascode current mirror is shown in Figure 23. From Figure, it can be seen that the bandwidth is less than 100 MHz with load capacitance C L = 500 ff. The µw. Figure 23 Frequency response of cascode current mirror Comparative results of the simulated performances between designed cascode current mirror and cascode current mirror in [8] are shown in Table 4 Table4 Comparison of simulated performance between the designed cascode current mirror and cascode current mirror in [8]. Performance factor Designed Cascode Current Mirror Cascode Current Mirror [C. Koliopoulos, C. Psychalinos] 2007 Technology used (m) Supply Voltage DC power dissipation (w) Cutt-off frequency (MHz) < Simulation Result For Cascode current mirror with adaptive bias scheme The circuit of cascode current mirror with adaptive bias scheme, shown in Figure 13, has been simulated using tool Hspice for 0.18 µm CMOS technology. The transistor dimensions are listed in Table 3. The values of bias voltage (V BIAS ), supply voltage (V DD ) and source voltage ( V SS ) are chosen as 0.98 V, 1.5 V and 0 V respectively. The frequency response of cascode current mirror with adaptive bias scheme is shown in Figure 24. From Figure, it can be seen that the bandwidth is over 100 MHz with load capacitance C L =500fF.The total power consumption of cascode current mirror with adaptive bias scheme is µw. Table5.Transistor dimensions of cascode current mirror with adaptive bias scheme. Transistor W[µm] L[µm] M 6 -M M 1,M 2,M 3,M M Comparative results of the simulated performances between designed cascode current mirror with adaptive bias scheme and cascode current mirror with adaptive bias scheme in [5] are shown in Table5.
14 Low Voltage Analog Circuit Design Based on the Flipped Voltage Follower 271 Table6. Comparison of simulated performance between the designed cascode current mirror with adaptive bias scheme and cascode current mirror with adaptive bias scheme in [8] Performance factor Designed cascade current mirror based on adaptive bias scheme Cascade current mirror with adaptive bias scheme [C. Koliopoulos, C. Psychalinos]2007. Technology used (m) Supply voltage (V) DC power dissipation (w) Cut-off frequency (MHz) Figure 24 Frequency response of cascode current mirror with adaptive bias scheme 6.7 Simulation Result For Current mirror based on FVF cell The circuit of current mirror based on FVF cell, shown in Figure 4, has been simulated using tool Hspice for 0.18 µm CMOS technology. The transistor dimensions are listed in Table 5. The values of bias voltage (V BIAS ), supply voltage ( V DD ) and source voltage ( V SS ) are chosen as 0.98 V, 1.5 V and 0 V respectively. The frequency response of the current mirror based on FVF cell is shown in Figure 6. From Figure 3.9, it can be seen that the bandwidth is over 1000 MHz with load capacitance C L =500fF. The total power consumption of FVF cell based current mirror is µw. Table7. Transistor dimensions of current mirror based on FVF cell. Transistor W[m] L[m] M-M M 1,M 2,M M 3,M
15 IJECSE,Volume1,Number 2 Neeraj Yadav et al. Figure 25 Frequency response of current mirror based on FVF cell Table8. Comparison of simulated performance between the designed current mirrors with adaptive bias scheme and cascode current mirror with adaptive bias scheme in [8] Performance factor Designed current mirror based on FVF cell Current mirror based on FVF cell [C. Koliopoulos, C. Psychalinos] 2007 Technology used (µm) Supply voltage (V) DC power dissipation (µw) Cut-off frequency (MHz) Layout of current mirror based on FVF cell Layout of current mirror based on FVF cell has been designed using tool IC Station Editor (Mentor Graphics) for tsmc 0.18 µm CMOS technology libraries. Layout diagram of current mirror based on FVF cell is shown in Figure The design rule check (DRC), layout versus schematic (LVS) and post extraction (PEX) checking has also been performed using tool Calibre (Mentor Graphics). Figure 26 Layout of Current Mirror based on the FVF cell 7. Conclusion This paper is based on the flipped voltage follower which is used for the designing of the low voltage low power analog circuit design. In this paper I have discussed different structure and the applications of the flipped voltage follower. The power consumption and the different analysis is done using Cadence tool, and the layout of the voltage follower and the flipped voltage follower is presented. There is made a comparison between the current mirror which is designed in this paper and the current mirrors which has been presented in the previous paper. REFERENCES [1] C. Toumazou, F. Lidgey, and D. G. Haigh, Analog IC design-theapproach. Peter Peregrenus Ltd., UK, 1990.
16 Low Voltage Analog Circuit Design Based on the Flipped Voltage Follower 273 [2] S.S. rajput and S.S. Jamuar, Design Techniques for low voltage Analog circuit structures, NSM 2001/IEEE 2001 page [3] J.Pan, Y.Inoue, and Z Liang, An energy management circuit or self powered ubiqitions sensors modulesuing vibration-based energy. IEICE trans fundamental vol.e90-a no.10 pp , oct [4] J. Ramirez-Angulo, R.G. Carvajal., A. Torralba, J. Galan. A.P. Vega-Leal, J. Tombs, The flipped voltage follower: a useful cell for lowvoltage low-power circuit design, Circuits and Systems, ISCAS IEEE International Symposium on, Volume 3, pp , May [5] M.Wilamowski Bogdan, VLSI Analog Multiplier/divider Circuit, International Symposium on Industrial Electronics, Pretoria, South Africa, pp , July 7-10, [6] Eric A. Vittoz, Analog VLSI signal processing: Why, where and how?, International Journal on Analog Integrated Circuits and Signal Processing, Vol. 6, No. 1, pp , July, 1994,. [7] S. Yan and E. Sánchez-Sinencio, Low voltage analog circuit design techniques: IEICE Trans. Fund., vol. E83, no. 2, pp. 1 17, Feb [8] C. Koliopoulos, C. Psychalinos, A Comparative Study of the Performance of the Flipped Voltage Follower Based Low-Voltage Current Mirrors, Signals, Circuits and Systems, ISSCS International Symposium on Volume 42, pp , July [9] Behzad Razavi, Design of Analog CMOS Integrated Circuits, Tata McGraw- Hill pp , A tutorial, IEICE Trans. Fund., vol. E83, no. 2, pp. 1 17, Feb [10] S. Soclof, Applications of Analog Integrated Circuits, Prentice Hall, [11] R. Jacob Baker, Harry W. Li and David E. Boyce, CMOS Circuit Design, Layout and Simulation, Prentice Hall, [12] D.P.Stokesderry A Large signal IGFET dc source follower Procedding of the IEEE pp. 66 November [13] Suming Lai; Hong Zhang; Guican Chen; Jianchao Xu; An improved source follower with wide swing and low output impedance Circuits and Systems, APCCAS IEEE Asia Pacific Conference pp [14] Ramón González Carvajal, Senior Member, IEEE, Jaime Ramírez-Angulo, Fellow, IEEE, Antonio J. López-Martín, Member, IEEE, Antonio Torralba, Senior Member, IEEE, Juan Antonio Gómez Galán, Alfonso Carlosena, Member, IEEE, and Fernando Muñoz Chavero The Flipped Voltage Follower: A Useful Cell for Low-Voltage Low-Power Circuit Design IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I: REGULAR PAPERS, VOL. 52, NO. 7, JULY 2005 [15] A four quadrent analog multiplier Solid state circuit conference 1985 ESSCIRC 85 pp sept [16] A GaAs four quadrant analog multiplier circuit solid state circuit IEEE Journal of March 1989 pp [17] Kiatwarin, N. Sawigun, C. Kiranon, W. Dept. of Telecommun. Eng., King Mongkut s Inst. of Technol., Bangkok A Low Voltage Four- Quadrant Analog Multiplier Using Triode-MOSFETs Communications and Information Technologies, ISCIT 06. International Symposium pp. 1105, Oct Sept
Keywords - Analog Multiplier, Four-Quadrant, FVF Differential Structure, Source Follower.
Characterization of CMOS Four Quadrant Analog Multiplier Nipa B. Modi*, Priyesh P. Gandhi ** *(PG Student, Department of Electronics & Communication, L. C. Institute of Technology, Gujarat Technological
More informationClass-AB Low-Voltage CMOS Unity-Gain Buffers
Class-AB Low-Voltage CMOS Unity-Gain Buffers Mariano Jimenez, Antonio Torralba, Ramón G. Carvajal and J. Ramírez-Angulo Abstract Class-AB circuits, which are able to deal with currents several orders of
More informationUltra Low Static Power OTA with Slew Rate Enhancement
ECE 595B Analog IC Design Design Project Fall 2009 Project Proposal Ultra Low Static Power OTA with Slew Rate Enhancement Patrick Wesskamp PUID: 00230-83995 1) Introduction In this design project I plan
More informationA 2-bit Current-mode ADC based on the Flipped Voltage Follower Technique
A 2-bit Current-mode ADC based on the Flipped Voltage Follower Technique Veepsa Bhatia 1, #, Neeta Pandey 2 1 Dept. of Electronics and Communication Engineering, Indira Gandhi Delhi Technical University
More informationEnhancing the Slew rate and Gain Bandwidth of Single ended CMOS Operational Transconductance Amplifier using LCMFB Technique
ISSN: 2278 1323 Enhancing the Slew rate and Gain Bandwidth of Single ended CMOS Operational Transconductance Amplifier using LCMFB Technique 1 Abhishek Singh, 2 Sunil Kumar Shah, 3 Pankaj Sahu 1 abhi16.2007@gmail.com,
More informationA new class AB folded-cascode operational amplifier
A new class AB folded-cascode operational amplifier Mohammad Yavari a) Integrated Circuits Design Laboratory, Department of Electrical Engineering, Amirkabir University of Technology, Tehran, Iran a) myavari@aut.ac.ir
More informationClass AB Output Stages for Low Voltage CMOS Opamps with Accurate Quiescent Current Control by Means of Dynamic Biasing
Analog Integrated Circuits and Signal Processing, 36, 69 77, 2003 c 2003 Kluwer Academic Publishers. Manufactured in The Netherlands. Class AB Output Stages for Low Voltage CMOS Opamps with Accurate Quiescent
More informationA Low Power Low Voltage High Performance CMOS Current Mirror
RESEARCH ARTICLE OPEN ACCESS A Low Power Low Voltage High Performance CMOS Current Mirror Sirish Rao, Sampath Kumar V Department of Electronics & Communication JSS Academy of Technical Education Noida,
More informationIN RECENT years, low-dropout linear regulators (LDOs) are
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II: EXPRESS BRIEFS, VOL. 52, NO. 9, SEPTEMBER 2005 563 Design of Low-Power Analog Drivers Based on Slew-Rate Enhancement Circuits for CMOS Low-Dropout Regulators
More informationDesign of A Low Voltage Low Power CMOS Current Mirror with Enhanced Dynamic Range
International Journal of Engineering and Advanced Technology (IJEAT) Design of A Low Voltage Low Power CMOS Current Mirror with Enhanced Dynamic Range Ramanand Harijan, Padma Devi, Pawan Kumar Abstract
More informationLow-voltage high dynamic range CMOS exponential function generator
Applied mathematics in Engineering, Management and Technology 3() 015:50-56 Low-voltage high dynamic range CMOS exponential function generator Behzad Ghanavati Department of Electrical Engineering, College
More informationECEN 474/704 Lab 6: Differential Pairs
ECEN 474/704 Lab 6: Differential Pairs Objective Design, simulate and layout various differential pairs used in different types of differential amplifiers such as operational transconductance amplifiers
More informationLow power high-gain class-ab OTA with dynamic output current scaling
LETTER IEICE Electronics Express, Vol.0, No.3, 6 Low power high-gain class-ab OTA with dynamic output current scaling Youngil Kim a) and Sangsun Lee b) Department Nanoscale Semiconductor Engineering, Hanyang
More informationLow Power Op-Amp Based on Weak Inversion with Miller-Cascoded Frequency Compensation
Low Power Op-Amp Based on Weak Inversion with Miller-Cascoded Frequency Compensation Maryam Borhani, Farhad Razaghian Abstract A design for a rail-to-rail input and output operational amplifier is introduced.
More informationDynamic Threshold MOS (DTMOS) And its Application
Dynamic Threshold MOS (DTMOS) And its Application Sonam, Asst. Prof. Richa srivastava Abstract In this paper dynamic threshold MOS (DTMOS) and its application in a current mirror is discussed. The input/output
More informationLow-Power Linear Variable Gain Amplifier
Low-Power Linear Variable Gain Amplifier Sauvik Das M.Tech, School of Electronics Engineering (VLSI Design) Vellore Institute of Technology, Vellore, Tamilnadu, 63204, India. Orcid Id: 0000-0002-4598-5590
More informationHigh Speed CMOS Comparator Design with 5mV Resolution
High Speed CMOS Comparator Design with 5mV Resolution Raghava Garipelly Assistant Professor, Dept. of ECE, Sree Chaitanya College of Engineering, Karimnagar, A.P, INDIA. Abstract: A high speed CMOS comparator
More informationInternational Journal of ChemTech Research CODEN (USA): IJCRGG ISSN: Vol.7, No.2, pp ,
International Journal of ChemTech Research CODEN (USA): IJCRGG ISSN: 974-429 Vol.7, No.2, pp 85-857, 24-25 ICONN 25 [4 th -6 th Feb 25] International Conference on Nanoscience and Nanotechnology-25 SRM
More informationAnalysis of CMOS Second Generation Current Conveyors
Analysis of CMOS Second Generation Current Conveyors Mrugesh K. Gajjar, PG Student, Gujarat Technology University, Electronics and communication department, LCIT, Bhandu Mehsana, Gujarat, India Nilesh
More informationDesign and Analysis of High Gain Differential Amplifier Using Various Topologies
Design and Analysis of High Gain Amplifier Using Various Topologies SAMARLA.SHILPA 1, J SRILATHA 2 1Assistant Professor, Dept of Electronics and Communication Engineering, NNRG, Ghatkesar, Hyderabad, India.
More informationPerformance Evaluation of Different Types of CMOS Operational Transconductance Amplifier
Performance Evaluation of Different Types of CMOS Operational Transconductance Amplifier Kalpesh B. Pandya 1, Kehul A. shah 2 1 Gujarat Technological University, Department of Electronics & Communication,
More informationIMPROVING BANDWIDTH OF FLIPPED VOLTAGE FOLLOWER USING GATE-BODY DRIVEN TECHNIQUE
Vol. XX, No. Y (Year) PPP - QQQ School of Engineering, Taylor s University IMPROVING BANDWIDTH OF FLIPPED VOLTAGE FOLLOWER USING GATE-BODY DRIVEN TECHNIQUE VANDANA NIRANJAN*, ASHWANI KUMAR, SHAIL BALA
More informationLOW POWER FOLDED CASCODE OTA
LOW POWER FOLDED CASCODE OTA Swati Kundra 1, Priyanka Soni 2 and Anshul Kundra 3 1,2 FET, Mody Institute of Technology & Science, Lakshmangarh, Sikar-322331, INDIA swati.kundra87@gmail.com, priyankamec@gmail.com
More informationInternational Journal of Advance Engineering and Research Development. Comparitive Analysis of Two stage Operational Amplifier
Scientific Journal of Impact Factor(SJIF): 3.134 e-issn(o): 2348-4470 p-issn(p): 2348-6406 International Journal of Advance Engineering and Research Development Volume 2,Issue 4, April -2015 Comparitive
More informationDesign and Simulation of Low Voltage Operational Amplifier
Design and Simulation of Low Voltage Operational Amplifier Zach Nelson Department of Electrical Engineering, University of Nevada, Las Vegas 4505 S Maryland Pkwy, Las Vegas, NV 89154 United States of America
More informationDESIGN OF TWO-STAGE CLASS AB CASCODE OP-AMP WITH IMPROVED GAIN
DESIGN OF TWO-STAGE CLASS AB CASCODE OP-AMP WITH IMPROVED GAIN 1 B.Hinduja, 2 Dr.G.V. Maha Lakshmi 1 PG Scholar, 2 Professor Department of Electronics and Communication Engineering Sreenidhi Institute
More informationDesign Analysis and Performance Comparison of Low Power High Gain 2nd Stage Differential Amplifier Along with 1st Stage
Design Analysis and Performance Comparison of Low Power High Gain 2nd Stage Differential Amplifier Along with 1st Stage Sadeque Reza Khan Department of Electronic and Communication Engineering, National
More informationAbstract :In this paper a low voltage two stage Cc. 1. Introduction. 2.Block diagram of proposed two stage operational amplifier and operation
Small signal analysis of two stage operational amplifier on TSMC 180nm CMOS technology with low power dissipation Jahid khan 1 Ravi pandit 1, 1 Department of Electronics & Communication Engineering, 1
More informationAN OPERATIONAL AMPLIFIER WITH RECYCLING FOLDED CASCODE TOPOLOGY AND ADAPTIVE BIAISNG
AN OPERATIONAL AMPLIFIER WITH RECYCLING FOLDED CASCODE TOPOLOGY AND ADAPTIVE BIAISNG Saumya Vij 1, Anu Gupta 2 and Alok Mittal 3 1,2 Electrical and Electronics Engineering, BITS-Pilani, Pilani, Rajasthan,
More informationHIGH GAIN, HIGH BANDWIDTH AND LOW POWER FOLDED CASCODE OTA WITH SELF CASCODE AND DTMOS TECHNIQUE
HIGH GAIN, HIGH BANDWIDTH AND LOW POWER FOLDED CASCODE OTA WITH SELF CASCODE AND DTMOS TECHNIQUE * Kirti, ** Dr Jasdeep kaur Dhanoa, *** Dilpreet Badwal Indira Gandhi Delhi Technical University For Women,
More informationA Novel Continuous-Time Common-Mode Feedback for Low-Voltage Switched-OPAMP
10.4 A Novel Continuous-Time Common-Mode Feedback for Low-oltage Switched-OPAMP M. Ali-Bakhshian Electrical Engineering Dept. Sharif University of Tech. Azadi Ave., Tehran, IRAN alibakhshian@ee.sharif.edu
More informationDesign of Low Power and High Speed CMOS Buffer Amplifier with Enhanced Deriving Capability
IOSR Journal of VLSI and Signal Processing (IOSR-JVSP) Volume 2, Issue 1 (Mar. Apr. 2013), PP 45-50 e-issn: 2319 4200, p-issn No. : 2319 4197 Design of Low Power and High Speed CMOS Buffer Amplifier with
More informationDesign of Gain Enhanced and Power Efficient Op- Amp for ADC/DAC and Medical Applications
Indian Journal of Science and Technology, Vol 9(29), DOI: 10.17485/ijst/2016/v9i29/90885, August 2016 ISSN (Print) : 0974-6846 ISSN (Online) : 0974-5645 Design of Gain Enhanced and Power Efficient Op-
More informationDesign of Miller Compensated Two-Stage Operational Amplifier for Data Converter Applications
Design of Miller Compensated Two-Stage Operational Amplifier for Data Converter Applications Prema Kumar. G Shravan Kudikala Casest, School Of Physics Casest, School Of Physics University Of Hyderabad
More informationDesign of a Capacitor-less Low Dropout Voltage Regulator
Design of a Capacitor-less Low Dropout Voltage Regulator Sheenam Ahmed 1, Isha Baokar 2, R Sakthivel 3 1 Student, M.Tech VLSI, School of Electronics Engineering, VIT University, Vellore, Tamil Nadu, India
More informationAn Ultra Low-Voltage and Low-Power OTA Using Bulk-Input Technique and Its Application in Active-RC Filters
Circuits and Systems, 2011, 2, 183-189 doi:10.4236/cs.2011.23026 Published Online July 2011 (http://www.scirp.org/journal/cs) An Ultra Low-Voltage and Low-Power OTA Using Bulk-Input Technique and Its Application
More informationHigh Voltage Operational Amplifiers in SOI Technology
High Voltage Operational Amplifiers in SOI Technology Kishore Penmetsa, Kenneth V. Noren, Herbert L. Hess and Kevin M. Buck Department of Electrical Engineering, University of Idaho Abstract This paper
More informationDesign and Analysis of Low Power Two Stage CMOS Op- Amp with 50nm Technology
Design and Analysis of Low Power Two Stage CMOS Op- Amp with 50nm Technology Swetha Velicheti, Y. Sandhyarani, P.Praveen kumar, B.Umamaheshrao Assistant Professor, Dept. of ECE, SSCE, Srikakulam, A.P.,
More informationPerformance Analysis of A Driver Cricuit and An Input Amplifier for BCC
American Journal of Engineering Research (AJER) e-issn : 2320-0847 p-issn : 2320-0936 Volume-02, Issue-11, pp-252-259 www.ajer.org Research Paper Open Access Performance Analysis of A Driver Cricuit and
More informationLOW CURRENT REFERENCES WITH SUPPLY INSENSITIVE BIASING
Annals of the Academy of Romanian Scientists Series on Science and Technology of Information ISSN 2066-8562 Volume 3, Number 2/2010 7 LOW CURRENT REFERENCES WITH SUPPLY INSENSITIVE BIASING Vlad ANGHEL
More informationDESIGN OF A NOVEL CURRENT MIRROR BASED DIFFERENTIAL AMPLIFIER DESIGN WITH LATCH NETWORK. Thota Keerthi* 1, Ch. Anil Kumar 2
ISSN 2277-2685 IJESR/October 2014/ Vol-4/Issue-10/682-687 Thota Keerthi et al./ International Journal of Engineering & Science Research DESIGN OF A NOVEL CURRENT MIRROR BASED DIFFERENTIAL AMPLIFIER DESIGN
More informationInternational Journal of Advance Engineering and Research Development
Scientific Journal of Impact Factor (SJIF): 3.134 ISSN(Online): 2348-4470 ISSN(Print) : 2348-6406 International Journal of Advance Engineering and Research Development Volume 1, Issue 11, November -2014
More informationA Comparative Analysis of Various Methods for CMOS Based Integrator Design
A Comparative Analysis of Various Methods for CMOS Based Integrator Design Ashok Rohada 1, Rachna Jani 2 M.Tech Student (Embedded Systems & VLSI Design), Dept. of ECE, CSPIT, CHARUSAT campus, Changa, Gujarat,
More informationChapter 5. Operational Amplifiers and Source Followers. 5.1 Operational Amplifier
Chapter 5 Operational Amplifiers and Source Followers 5.1 Operational Amplifier In single ended operation the output is measured with respect to a fixed potential, usually ground, whereas in double-ended
More informationA High Gain and Improved Linearity 5.7GHz CMOS LNA with Inductive Source Degeneration Topology
A High Gain and Improved Linearity 5.7GHz CMOS LNA with Inductive Source Degeneration Topology Ch. Anandini 1, Ram Kumar 2, F. A. Talukdar 3 1,2,3 Department of Electronics & Communication Engineering,
More informationDesign and Implementation of less quiescent current, less dropout LDO Regulator in 90nm Technology Madhukumar A S #1, M.
Design and Implementation of less quiescent current, less dropout LDO Regulator in 90nm Technology Madhukumar A S #1, M.Nagabhushan #2 #1 M.Tech student, Dept. of ECE. M.S.R.I.T, Bangalore, INDIA #2 Asst.
More informationAn Ultralow-Power Low-Voltage Fully Differential Opamp for Long-Life Autonomous Portable Equipment
International Journal of Engineering Research and Development e-issn: 2278-067X, p-issn: 2278-800X, www.ijerd.com Volume 7, Issue 1 (May 2013), PP. 81-85 An Ultralow-Power Low-Voltage Fully Differential
More informationLow voltage, low power, bulk-driven amplifier
University of Arkansas, Fayetteville ScholarWorks@UARK Electrical Engineering Undergraduate Honors Theses Electrical Engineering 5-2009 Low voltage, low power, bulk-driven amplifier Shama Huda University
More informationA Novel Design of Low Voltage,Wilson Current Mirror based Wideband Operational Transconductance Amplifier
A Novel Design of Low Voltage,Wilson Current Mirror based Wideband Operational Transconductance Amplifier Kehul A. Shah 1, N.M.Devashrayee 2 1(Associative Prof., Department of Electronics and Communication,
More informationDesign of High Gain Two stage Op-Amp using 90nm Technology
Design of High Gain Two stage Op-Amp using 90nm Technology Shaik Aqeel 1, P. Krishna Deva 2, C. Mahesh Babu 3 and R.Ganesh 4 1 CVR College of Engineering/UG Student, Hyderabad, India 2 CVR College of Engineering/UG
More informationThe Flipped Voltage Follower (FVF)
ELEN 607 (ESS) The Flipped Voltage Follower (FVF) A useful cell for low-voltage, low-power circuit design part of this material was provided by Profs. A.Torralba J. Ramírez-Angulo 2, R.G.Carvajal, A. López-Martín
More informationA High-Driving Class-AB Buffer Amplifier with a New Pseudo Source Follower
A High-Driving Class-AB Buffer Amplifier with a New Pseudo Source Follower Chih-Wen Lu, Yen-Chih Shen and Meng-Lieh Sheu Abstract A high-driving class-ab buffer amplifier, which consists of a high-gain
More informationDESIGN OF A PROGRAMMABLE LOW POWER LOW DROP-OUT REGULATOR
DESIGN OF A PROGRAMMABLE LOW POWER LOW DROP-OUT REGULATOR Jayanthi Vanama and G.L.Sampoorna Trainee Engineer, Powerwave Technologies Pvt. Ltd., R&D India jayanthi.vanama@pwav.com Intern, CONEXANT Systems
More informationPerformance Analysis of Low Power, High Gain Operational Amplifier Using CMOS VLSI Design
RESEARCH ARTICLE OPEN ACCESS Performance Analysis of Low Power, High Gain Operational Amplifier Using CMOS VLSI Design Ankush S. Patharkar*, Dr. Shirish M. Deshmukh** *(Department of Electronics and Telecommunication,
More informationLow Power High Speed Differential Current Comparator
Low Power High Speed Differential Current Comparator Indrani Roy, Suman Biswas, B. S. Patro 2 M.Tech (VLSI & ES) Student, School of Electronics, KIIT University, Bhubaneswar, India Ph.D Scholar, School
More informationLow-Voltage Wide Linear Range Tunable Operational Transconductance Amplifier
Low-Voltage Wide Linear Range Tunable Operational Transconductance Amplifier A dissertation submitted in partial fulfillment of the requirement for the award of degree of Master of Technology in VLSI Design
More informationDesign and Implementation of Current-Mode Multiplier/Divider Circuits in Analog Processing
Design and Implementation of Current-Mode Multiplier/Divider Circuits in Analog Processing N.Rajini MTech Student A.Akhila Assistant Professor Nihar HoD Abstract This project presents two original implementations
More informationFull Paper ACEEE Int. J. on Control System and Instrumentation, Vol. 4, No. 2, June 2013
ACEEE Int J on Control System and Instrumentation, Vol 4, No 2, June 2013 Analys and Design of CMOS Source Followers and Super Source Follower Mr D K Shedge 1, Mr D A Itole 2, Mr M P Gajare 3, and Dr P
More informationAn Analog Phase-Locked Loop
1 An Analog Phase-Locked Loop Greg Flewelling ABSTRACT This report discusses the design, simulation, and layout of an Analog Phase-Locked Loop (APLL). The circuit consists of five major parts: A differential
More informationLOW-VOLTAGE, CLASS AB AND HIGH SLEW-RATE TWO STAGE OPERATIONAL AMPLIFIERS. CARLOS FERNANDO NIEVA-LOZANO, B.Sc.E.E
LOW-VOLTAGE, CLASS AB AND HIGH SLEW-RATE TWO STAGE OPERATIONAL AMPLIFIERS BY CARLOS FERNANDO NIEVA-LOZANO, B.Sc.E.E A thesis submitted to the Graduate School in partial fulfillment of the requirements
More informationLow Power Analog Multiplier Using Mifgmos
Journal of Computer Science, 9 (4): 514-520, 2013 ISSN 1549-3636 2013 doi:10.3844/jcssp.2013.514.520 Published Online 9 (4) 2013 (http://www.thescipub.com/jcs.toc) Low Power Analog Multiplier Using Mifgmos
More informationLOW-VOLTAGE operation and optimized power-to-performance
1068 IEEE JOURNAL OF SOLID-STATE CIRCUITS, VOL. 40, NO. 5, MAY 2005 Low-Voltage Super Class AB CMOS OTA Cells With Very High Slew Rate and Power Efficiency Antonio J. López-Martín, Member, IEEE, Sushmita
More informationDesign and Simulation of Low Dropout Regulator
Design and Simulation of Low Dropout Regulator Chaitra S Kumar 1, K Sujatha 2 1 MTech Student, Department of Electronics, BMSCE, Bangalore, India 2 Assistant Professor, Department of Electronics, BMSCE,
More informationCHAPTER 3. Instrumentation Amplifier (IA) Background. 3.1 Introduction. 3.2 Instrumentation Amplifier Architecture and Configurations
CHAPTER 3 Instrumentation Amplifier (IA) Background 3.1 Introduction The IAs are key circuits in many sensor readout systems where, there is a need to amplify small differential signals in the presence
More informationDesign of High Gain Low Voltage CMOS Comparator
Design of High Gain Low Voltage CMOS Comparator Shahid Khan 1 1 Rustomjee Academy for Global Careers Abstract: Comparators used in most of the analog circuits like analog to digital converters, switching
More informationAdvanced Operational Amplifiers
IsLab Analog Integrated Circuit Design OPA2-47 Advanced Operational Amplifiers כ Kyungpook National University IsLab Analog Integrated Circuit Design OPA2-1 Advanced Current Mirrors and Opamps Two-stage
More informationA Switched-Capacitor Band-Pass Biquad Filter Using a Simple Quasi-unity Gain Amplifier
A Switched-Capacitor Band-Pass Biquad Filter Using a Simple Quasi-unity Gain Amplifier Hugo Serra, Nuno Paulino, and João Goes Centre for Technologies and Systems (CTS) UNINOVA Dept. of Electrical Engineering
More informationA PSEUDO-CLASS-AB TELESCOPIC-CASCODE OPERATIONAL AMPLIFIER
A PSEUDO-CLASS-AB TELESCOPIC-CASCODE OPERATIONAL AMPLIFIER M. Taherzadeh-Sani, R. Lotfi, and O. Shoaei ABSTRACT A novel class-ab architecture for single-stage operational amplifiers is presented. The structure
More informationDesign of High-Speed Op-Amps for Signal Processing
Design of High-Speed Op-Amps for Signal Processing R. Jacob (Jake) Baker, PhD, PE Professor and Chair Boise State University 1910 University Dr. Boise, ID 83725-2075 jbaker@ieee.org Abstract - As CMOS
More informationChapter 12 Opertational Amplifier Circuits
1 Chapter 12 Opertational Amplifier Circuits Learning Objectives 1) The design and analysis of the two basic CMOS op-amp architectures: the two-stage circuit and the single-stage, folded cascode circuit.
More informationAn accurate track-and-latch comparator
An accurate track-and-latch comparator K. D. Sadeghipour a) University of Tabriz, Tabriz 51664, Iran a) dabbagh@tabrizu.ac.ir Abstract: In this paper, a new accurate track and latch comparator circuit
More informationMicroelectronic Circuits II. Ch 10 : Operational-Amplifier Circuits
Microelectronic Circuits II Ch 0 : Operational-Amplifier Circuits 0. The Two-stage CMOS Op Amp 0.2 The Folded-Cascode CMOS Op Amp CNU EE 0.- Operational-Amplifier Introduction - Analog ICs : operational
More information[Kumar, 2(9): September, 2013] ISSN: Impact Factor: 1.852
IJESRT INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY Design and Performance analysis of Low power CMOS Op-Amp Anand Kumar Singh *1, Anuradha 2, Dr. Vijay Nath 3 *1,2 Department of
More informationAtypical op amp consists of a differential input stage,
IEEE JOURNAL OF SOLID-STATE CIRCUITS, VOL. 33, NO. 6, JUNE 1998 915 Low-Voltage Class Buffers with Quiescent Current Control Fan You, S. H. K. Embabi, and Edgar Sánchez-Sinencio Abstract This paper presents
More informationA Low Dropout Voltage Regulator with Enhanced Transconductance Error Amplifier and Small Output Voltage Variations
A Low Dropout Voltage Regulator with Enhanced Transconductance Error Amplifier and Small Output Voltage Variations Ebrahim Abiri*, Mohammad Reza Salehi**, and Sara Mohammadalinejadi*** Department of Electrical
More informationDesign and Simulation of an Operational Amplifier with High Gain and Bandwidth for Switched Capacitor Filters
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE) e-issn: 2278-1676,p-ISSN: 2320-3331, Volume 11, Issue 1 Ver. II (Jan. Feb. 2016), PP 47-53 www.iosrjournals.org Design and Simulation
More informationNew Four-Quadrant CMOS Current-Mode and Voltage-Mode Multipliers
Analog Integrated Circuits and Signal Processing, 45, 295 307, 2005 c 2005 Springer Science + Business Media, Inc. Manufactured in The Netherlands. New Four-Quadrant CMOS Current-Mode and Voltage-Mode
More informationRadivoje Đurić, 2015, Analogna Integrisana Kola 1
OTA-output buffer 1 According to the types of loads, the driving capability of the output stages differs. For switched capacitor circuits which have high impedance capacitive loads, class A output stage
More informationDAT175: Topics in Electronic System Design
DAT175: Topics in Electronic System Design Analog Readout Circuitry for Hearing Aid in STM90nm 21 February 2010 Remzi Yagiz Mungan v1.10 1. Introduction In this project, the aim is to design an adjustable
More informationLow Power and Fast Transient High Swing CMOS Telescopic Operational Amplifier
RESEARCH ARTICLE OPEN ACCESS Low Power and Fast Transient High Swing CMOS Telescopic Operational Amplifier Akshay Kumar Kansal 1, Asst Prof. Gayatri Sakya 2 Electronics and Communication Department, 1,2
More informationDESIGN AND SIMULATION OF CURRENT FEEDBACK OPERATIONAL AMPLIFIER IN 180nm AND 90nm CMOS PROCESSES
ISSN: 95-1680 (ONINE) ICTACT JOURNA ON MICROEECTRONICS, JUY 017, VOUME: 0, ISSUE: 0 DOI: 10.1917/ijme.017.0069 DESIGN AND SIMUATION OF CURRENT FEEDBACK OPERATIONA AMPIFIER IN 180nm AND 90nm CMOS PROCESSES
More informationCMOS Instrumentation Amplifier with Offset Cancellation Circuitry for Biomedical Application
CMOS Instrumentation Amplifier with Offset Cancellation Circuitry for Biomedical Application Author Mohd-Yasin, Faisal, Yap, M., I Reaz, M. Published 2006 Conference Title 5th WSEAS Int. Conference on
More informationSensors & Transducers Published by IFSA Publishing, S. L.,
Sensors & Transducers Published by IFSA Publishing, S. L., 208 http://www.sensorsportal.com Fully Differential Operation Amplifier Using Self Cascode MOSFET Structure for High Slew Rate Applications Kalpraj
More informationOperational Amplifier with Two-Stage Gain-Boost
Proceedings of the 6th WSEAS International Conference on Simulation, Modelling and Optimization, Lisbon, Portugal, September 22-24, 2006 482 Operational Amplifier with Two-Stage Gain-Boost FRANZ SCHLÖGL
More informationCurrent Source/Sinks
Motivation Current Source/Sinks Biasing is a very important step in MOS based analog design. A current sink and current source are two terminal components whose current at any instant of time is independent
More informationDesign of Low Voltage Low Power CMOS OP-AMP
RESEARCH ARTICLE OPEN ACCESS Design of Low Voltage Low Power CMOS OP-AMP Shahid Khan, Prof. Sampath kumar V. Electronics & Communication department, JSSATE ABSTRACT Operational amplifiers are an integral
More information444 Index. F Fermi potential, 146 FGMOS transistor, 20 23, 57, 83, 84, 98, 205, 208, 213, 215, 216, 241, 242, 251, 280, 311, 318, 332, 354, 407
Index A Accuracy active resistor structures, 46, 323, 328, 329, 341, 344, 360 computational circuits, 171 differential amplifiers, 30, 31 exponential circuits, 285, 291, 292 multifunctional structures,
More informationLecture 300 Low Voltage Op Amps (3/28/10) Page 300-1
Lecture 300 Low Voltage Op Amps (3/28/10) Page 300-1 LECTURE 300 LOW VOLTAGE OP AMPS LECTURE ORGANIZATION Outline Introduction Low voltage input stages Low voltage gain stages Low voltage bias circuits
More informationStudy of Differential Amplifier using CMOS
Study of Differential Amplifier using CMOS Mr. Bhushan Bangadkar PG Scholar Mr. Amit Lamba Assistant Professor Mr. Vipin Bhure Assistant Professor Electronics and Communication Electronics and Communication
More informationA Compact Folded-cascode Operational Amplifier with Class-AB Output Stage
A Compact Folded-cascode Operational Amplifier with Class-AB Output Stage EEE 523 Advanced Analog Integrated Circuits Project Report Fuding Ge You are an engineer who is assigned the project to design
More informationIJSRD - International Journal for Scientific Research & Development Vol. 4, Issue 02, 2016 ISSN (online):
IJSRD - International Journal for Scientific Research & Development Vol. 4, Issue 02, 2016 ISSN (online): 2321-0613 Design & Analysis of CMOS Telescopic Operational Transconductance Amplifier (OTA) with
More informationImplementation of Current Reuse Structure in LNAUsing 90nm VLSI Technology for ISM Radio Frequency System
Implementation of Current Reuse Structure in LNAUsing 90nm VLSI Technology for ISM Radio Frequency System 1 Poonam Yadav, 2 Rajesh Mehra ME Scholar ECE Deptt. NITTTR, Chandigarh, India Associate Professor
More informationDESIGN AND PERFORMANCE VERIFICATION OF CURRENT CONVEYOR BASED PIPELINE A/D CONVERTER USING 180 NM TECHNOLOGY
DESIGN AND PERFORMANCE VERIFICATION OF CURRENT CONVEYOR BASED PIPELINE A/D CONVERTER USING 180 NM TECHNOLOGY Neha Bakawale Departmentof Electronics & Instrumentation Engineering, Shri G. S. Institute of
More informationAn Improved Bandgap Reference (BGR) Circuit with Constant Voltage and Current Outputs
International Journal of Research in Engineering and Innovation Vol-1, Issue-6 (2017), 60-64 International Journal of Research in Engineering and Innovation (IJREI) journal home page: http://www.ijrei.com
More informationANALYSIS AND DESIGN OF HIGH CMRR INSTRUMENTATION AMPLIFIER FOR ECG SIGNAL ACQUISITION SYSTEM USING 180nm CMOS TECHNOLOGY
International Journal of Electronics and Communication Engineering (IJECE) ISSN 2278-9901 Vol. 2, Issue 4, Sep 2013, 67-74 IASET ANALYSIS AND DESIGN OF HIGH CMRR INSTRUMENTATION AMPLIFIER FOR ECG SIGNAL
More informationCSE 577 Spring Insoo Kim, Kyusun Choi Mixed Signal CHIP Design Lab. Department of Computer Science & Engineering The Penn State University
CSE 577 Spring 2011 Basic Amplifiers and Differential Amplifier, Kyusun Choi Mixed Signal CHIP Design Lab. Department of Computer Science & Engineering The Penn State University Don t let the computer
More informationInternational Journal of Electronics and Communication Engineering & Technology (IJECET), INTERNATIONAL JOURNAL OF ELECTRONICS AND
INTERNATIONAL JOURNAL OF ELECTRONICS AND COMMUNICATION ENGINEERING & TECHNOLOGY (IJECET) ISSN 0976 6464(Print) ISSN 0976 6472(Online) Volume 4, Issue 3, May June, 2013, pp. 24-32 IAEME: www.iaeme.com/ijecet.asp
More informationA 1-V recycling current OTA with improved gain-bandwidth and input/output range
LETTER IEICE Electronics Express, Vol.11, No.4, 1 9 A 1-V recycling current OTA with improved gain-bandwidth and input/output range Xiao Zhao 1,2, Qisheng Zhang 1,2a), and Ming Deng 1,2 1 Key Laboratory
More informationLow Power Wide Frequency Range Current Starved CMOS VCO in 180nm, 130nm and 90nm CMOS Technology
International Journal of Engineering Research and Development e-issn: 2278-067X, p-issn: 2278-800X, www.ijerd.com Volume 7, Issue 4 (May 2013), PP. 80-84 Low Power Wide Frequency Range Current Starved
More informationRail to Rail Input Amplifier with constant G M and High Unity Gain Frequency. Arun Ramamurthy, Amit M. Jain, Anuj Gupta
1 Rail to Rail Input Amplifier with constant G M and High Frequency Arun Ramamurthy, Amit M. Jain, Anuj Gupta Abstract A rail to rail input, 2.5V CMOS input amplifier is designed that amplifies uniformly
More information