Improved Implementation of Sprott s Chaotic Oscillators Based on Current-Feedback Op Amps
|
|
- Ronald Sutton
- 6 years ago
- Views:
Transcription
1 Improved Implementation of Sprott s haotic Oscillators Based on urrent-feedback Op Amps Banlue Srisuchinwong and hun-hung Liou Sirindhorn International Institute of Technology, Thammasat University, Bangkadi ampus, Moo 5, Tiwanont Road, Muang, PaThum Tani, 000, Thailand, banlue@siit.tu.ac.th Abstract- Improved implementation of Sprott s chaotic oscillators based on current-feedback op amps (FOAs) is proposed. A Sprott s jerk function and four different types of nonlinear components are implemented using the attractively high-frequency features of the FOAs operating in both voltage and current modes. Four trajectories of the chaotic attractors are demonstrated. The chaotic spectrums are easily scaled and extended to higher frequencies by a factor of 77 to 80 In this paper, high frequency implementation of Sprott s chaotic oscillators is presented using current-feedback op amps (FOAs). The FOAs are currently recognized as versatile alternatives to the traditional op amps for their excellent performance in bandwidth and slew rates [9]. II. IRUIT IMPLEMENTATION I. INTRODUTION Over the past two decades there has been increasing interest in the study of chaotic oscillators [-]. haotic oscillators are useful tools not only for investigation of nonlinear phenomena, bifurcation and chaos, but also for a variety of applications such as synchronizations, control [4] and chaos-based communications systems [5]. hua s circuit [] is one of the best-known chaotic circuits but is difficult to scale to arbitrary frequencies because of the inductor with its frequencydependent resistive losses [6] although inductorless versions of hua s circuit have been possible [7]. Three reactive components (capacitors or inductors) and a nonlinear component are typically required for chaos systems with continuous flows so that the Kirchhoff representation of the circuit contains three first-order ordinary differential equations (ODEs). Recently, Sprott [6] has alternatively proposed chaotic oscillators based on a single third-order ODE in a simple form of d x/dt = F (d x/dt, dx/dt, x) called a jerk function (time derivative of acceleration). One of the Sprott s jerk functions in a general form is [6] x t x A t x t G ( x ) where G(x) is a nonlinear function and A = 0.6. The most straightforward implementation involves three successive active integrators to generate d x/dt, dx/dt and x from d x/dt coupled with a nonlinear element G(x) and feeds it back to d x/dt. Although Sprott s chaotic oscillators [6] based on () can be easily constructed using operational amplifiers (op amps) and be easily scaled to different frequencies, the operation has been somewhat delicate and the circuit has exhibited hysteresis because of the finite gain-bandwidth product and slew rates of the op amps [6, 8]. This problem has been circumvented by operating at a lower frequency of around.59 khz [6, 8]. () Figure. High frequency implementation of Sprott s chaotic oscillator using FOAs and each of G(x) shown in Figure.. Fig., shows the high frequency implementation of the Sprott s chaotic oscillator based on FOAs. The nonlinear components G(x) [6] can be implemented using FOAs as shown in each of the system in Figs. (a) to (d) where related parameters are also listed. In Fig., the FOA U 0 forms an integrator U 0 where the zero-db crossing (ZdB) frequency 0 = / 0 and 0 = R 0 0. The FOA U forms another integrator U where the ZdB frequency = / and = R. An expected integrator between U 0 and U is replaced by a simpler passive R filter. A routine analysis in Fig. reveals that the resulting jerk function at node N is K K K K G( x) x t t 0 X R R R X x 0 R K R R X 0 K R x t () ETI-ON 007 The 007 ETI International onference 8
2 Figure. Nonlinear components G(x) using FOAs. Figure. haotic attractors produced by Fig. using each of the nonlinear components G(x) shown in Fig.. ETI-ON 007 The 007 ETI International onference 9
3 where = R, R X = (R 0 R )/( R 0 +R ), and X = R X. As () = (), therefore K =, K = A = 0.6 and K =. For simplicity, let R = R = R 0 = R T. onsequently, = A/(R T ), = /(AR T ) and 0 = R /R 0 =. Table I summarizes the calculated values of the capacitors for R T = and also, with slight modification or scaling, the practical values of the capacitors for R T = k. TABLE I alculated and practical values of resistors and capacitors. omponents (Fig. ) alculated Values Practical Values G(x) in Figs. (a), (b), (d) G(x) in Fig. (c) F 0.5 F /A 0.50 F 5.0 F A/ 0.0 F.00 F R 0 k k R k k R k k III. SIMULATION RESULTS The performances of the circuits shown in Figs. and have been simulated through Pspice. Models AD844/AD and AD-845/AD are FOAs with and without current feedback terminal, respectively. By using the practical values shown in Table I, the simulated trajectories of the chaotic attractors in the x-(dx/dt) plane are shown in Figs. (a)-(d) for each of the nonlinear components G(x) shown in Figs. (a)-(d), respectively. In Table I, the practical values of capacitors 0,, may be scaled down until the simulated chaotic attractors shown in Fig. corrupt at which point Table II records the minimum values of such capacitors for each G(x) shown in Fig. whilst maintaining the value of R 0 = R = R = k. onsequently, the operating frequency f S where the chaotic spectrum is centered will be maximum as shown in Table II. Table II Minimum values of capacitors and the corresponding maximum operating frequencies f S. G(x) Types (F) (F) 0 (F) Fig. OAs 0.0 u 0.50 u 0.0 u.49 k (a) FOAs 0.05 n.5 n 5.0 p 544 k Fig. OAs.00 n 50.0 n.00 n 4.6 k (b) FOAs 5.00 p 5.0 p.50 p 4.05 M Fig. OAs.00 u 5.0 u 0.50 u 4.49 (c) FOAs.50 n 6.5 n.5 n 9. k Fig. OAs 0.0 u 0.5 u 5.00 n.8 k (d) FOA 5.0 p 65.0 p.5 p. M f S fs ( FOAs) (Hz) fs ( OAs) As an example in Table II where G(x) is shown in Fig. (d), Fig. 4 shows the corresponding output voltage waveform x and the chaotic frequency spectrum (dbm) centered around f S =. MHz. The latter is obtained through the fast fourier transform of x. For purposes of comparisons, Table II also includes the minimum values of the capacitors and the resulting frequency f S for the similar cases using op amps (OAs). It can be seen from Table II that the proposed implementation using FOAs enables higher f S by a factor of 77 to 80. Figure 4. An example of the output voltage waveform and the chaotic spectrum (dbm) centered around. MHz indicated in Table II. IV. ONLUSIONS High frequency implementation of Sprott s chaotic oscillators has been presented using FOAs. The Sprott s jerk function and four different types of nonlinear components have been implemented using FOAs. Four trajectories of the chaotic attractors have been illustrated. The operating frequencies are easily scaled and extended by a factor of 77 to 80. AKNOWLEDGMENTS Authors are grateful to Mr Wimol San-Um who brings the topics of chaotic oscillators to the authors attentions. REFERENES [] Special issue on chaos in nonlinear electronic circuits, Part A : Tutorials and Reviews, IEEE Transactions on ircuits and Systems 40(0), 99. [] Delgado-Restituto, M. and Rodriguez-Vazquez, A. (00), Integrated haos Generators, Proceedings of the IEEE, vol. 90, No. 5, May, 00, pp [] hen, G. and Ueta T. ed., haos in ircuits and Systems, World Scientific, Singapore, 00. [4] Special issue on chaos synchronization, control, and applications, IEEE Transactions on ircuits and Systems 44(0), 997. [5] Mandal, S. and Banerjee, S., Analysis and MOS Implementation of a haos-based ommunication System, IEEE Trans. ircuits and Systems Part I 5(9), Sep. 004, pp [6] Sprott, J.. A New lass of haotic ircuits,, Physics Letters A, 66, 000, pp. 9-. [7] Morgul, O. Inductorless realization of chua oscillator, Electron. Lett. (7),995,pp [8] Sprott, J.. Simple haotic Systems and ircuits, Am. J. Phys. 68(8), Auguest, 000, pp [9] Elwakel, A.S. and Kennedy, M.P. Improved Implementation of hua s haotic Oscillator Using urrent-feedback Op Amp, IEEE Trans. ircuits and Systems, Part I, 47(), 000, pp ETI-ON 007 The 007 ETI International onference 40
4 Whereas, previous II-based MSO scheme is only suitable for bipolar technology and not guarantee generate the sinusoidal at the high frequency. Therefore, the proposed MSO has more flexibility for I implementation and dealing with the applications than the previous II-based MSO. II. IRUIT DESRIPTIONS Fig. shows the symbol of the multiple-output OTA. An ideal OTA is a finite bandwidth voltage-controlled current source, with an infinite input and output impedance. The output currents of the ideal multiple-output OTA is given by Io gm( VV) () where is the transconductance gain, I o the output current, V + and V - is the non-inverting and inverting input voltages, respectively. For the case of OTA implemented with MOS transistors operating in saturation, the transconductance ( ) is proportional to (I abc ) / and it implemented with bipolar transistors, the is directly proportional to I abc. V + I abc I o I I () s Based on Fig., the generated circuit for realizing an MSO is shown in Fig.. Assuming that all OTA in Fig. are identical, by using () the loop again can be expressed as L s s According to the Barkhausen criterion, the condition for the proposed circuit to provide sinusoidal oscillation of frequency is or s N N gm S jo N N N g ( ) 0 o m () (4) j (5) By expanding (5), it is show that (5) would have a solution only if the value of N is odd (N). By equating the imaginary and real parts to zero, respectively, the frequency of oscillation (FO) and the condition of oscillation (O) can be expressed as V - -I o FO o tan n (6) Fig.. ircuit symbol of the multiple-output OTA. I Fig.. Basic building block of the proposed multiphase oscillator. -I +I O tan n From (6) and (7), the FO and O of a three-phase sinusoidal oscillator (N=) can be given as and f o (7) (8) gm (9) (OTA) (OTA) (OTA) N -I o gm +I o -I o gm +I o Fig.. Generalized circuit for realizinultiphase oscillator. -I on +I on Fig. shows the basic block of the proposed multiphase oscillator circuit. It consists of a multiple-output OTA and two grounded capacitors. The transfer functions between the output and input terminal of the circuit in Fig. can be given by The frequency of oscillation and the condition of oscillation for realizing N-phase sinusoidal oscillator, equal in amplitude and equally spaced in phase, are summarized in Table. From Fig., the use of multiple output-ota provides an inverted of the output current. Thus, there are n=6, 0, 4 even-phase available output currents. Therefore, the MSO circuit of Fig. can generate both oddnumber and even-number of phase by a single circuit. From (8) and (9), the frequency of oscillation and the condition of oscillation can be orthogonally controllable. The oscillation condition can be adjusted the capacitor and the frequency condition can be tuned by electronically the transconductance through the bias current. The high frequency oscillation can be obtained without the effect of OTA bandwidth in term of oscillation condition. Since the output impedance of the OTA is very high, the MSO current ETI-ON 007 The 007 ETI International onference 4
5 outputs can be directly connected to the next stage without the using additional current followers. The active and passive sensitivities of proposed MSO circuit have low, approximately - to. ONDITION AND FREQUENY OF OSILLATION OF MULTIPHASE SINUSOIDAL OSILLATOR. Number of phase (N) ondition of oscillation Frequency of oscillation ( o ) =.7 / 5 = / 7 = / 9 = / III. SIMULATION RESULT To the theoretical analysis of the proposed multiphase sinusoidal oscillator, a MOS design example has been simulated through PSPIE simulation program. The PSPIE model parameters for NMOS and PMOS transistor are standard 0.5m MOS process of MOSIS. The multiple-output plus/minus OTA schematic is modified from well know single-ended OTA structure [9]-[0], as shown in Fig. 4. It consists of a source-coupled pair with identical MOS devices (M-M) operating in the saturation region [9] where the output current is replicated using the current mirrors. The MOS transistors aspect ratios are: 0m/m for M, M; 40m/m for M-M6, M9-M0, M-M4, M7-M8; and 46m/m for M7-M8, M- M, M5-M6, M9-M0. The power supply is V DD =-V SS =.5V. Fig. 5 presents the simulation results of proposed MSO circuit with =0pF, =0.pF, I abc =50A ( =0.7mS) for N= where was designed to be larger than times of to ensure the oscillation will start. Fig. 6 shows sinusoidal waveform for six phases. Fig. 5. The simulated output waveform of three phase oscillator of Fig.. Fig. 6. Simulated output waveform of six phase oscillator of Fig I o M7 M M9 M5 M M4 M6 M0 M4 M8 V - V + -I o M M +I o +I o I abc Oscillation Frequency, MHz Simulated Theoretical M M7 M8 M Bias urrent, A M5 M6 M9 M0 Fig. 4. MOS multiple-output OTA implementation used in simulation. Fig. 7. Variation of the oscillation frequency with the bias current. Fig. 7 presents the simulation results of oscillation frequency of Fig. by varying the value of the bias current I abc (i.e. 50A to 500A or equal from 0.98mS to 0.48mS) with =0pF and =0.pF. The relationship between and oscillation frequency is shown in Fig. 8, which is varied by on (8). It shows that the proposed ETI-ON 007 The 007 ETI International onference 4
6 MSO can be generated the frequency high up to 0MHz according with theoretical. The circuit be generated the frequency higher than 0MHz but the simulation results not confirm with theory, this error cause from the parasitic capacitor of OTA. Finally, Fig. 9 shows the output currents against varied bias current I abc. Oscillation Frequency, MHz Output urrent, A p-p , pf Simulated Theoretical Fig. 8. Variation of the oscillation frequency with capacitor Bias urrent, A Fig. 9. Output currents of proposed multiphase sinusoidal oscillator again varying bias current with =0pF and =0.pF. IV. ONLUSIONS In this paper, a new electronically tunable MSO circuit has been presented. The proposed MSO circuit has a simple configuration which uses a multiple-output OTA and two grounded capacitors per section. The MSO circuit can be configured to provide an odd-number of equal-amplitude equally special in-phase output current. The frequency and condition of oscillation are independent controlled. The proposed MSO enjoys simple structure, an electronically tunable and suitable for I implementation as both MOS and bipolar technologies. Simulation results, which confirm the theoretical analysis, are obtained. REFERENES [] E. Sanchez-Sinecio, J. Ramirez-Angulo, B. Linares-Barranco and A. Rodriguez-vazquez, Operational transconductance amplifier-based non-linear function syntheses, IEEE Journal of Solid-State ircuits, vol. 4, pp , 989. [] A. Rodriguez-Vazquez, B. Linares-Barranco, J. L. Huertas and E. Sanchez-Sinencio, On the design of voltage-controlled sinusoidal oscillators using OTA s, IEEE Transactions on ircuits and Systems, vol. 7, pp. 98-, 990. [] I. A. Khan, M. T. Ahmed and N. Minhaj, Tunable OTA-based multiphase sinusoidal oscillators, International Journal of Electronics, vol. 7, pp , 99. [4] J. Wu, urrent-mode high-order OTA- filters, International Journal of Electronics, vol. 78, pp. 9-6, 994. [5] T. Tsukutani, M. Ishida, S. Tsuiki and Y. Kukui, Versatile currentmode biquad filter usinultiple current output OTAs, International Journal of Electronics, vol. 80, pp. 5-54, 996. [6] Y. Sun and J. K. Fidler, Structure generation and design of multiple loop feedback OTA-grounded capacitor filter, IEEE Transaction on ircuits and Systems, vol. 44, pp. -, 997. [7] P. Prommee and K. Dejhan, An integrable electronic-controlled quadrature sinusoidal oscillator using MOS operational transconductance amplifier, International Journal of Electronics, vol. 89, pp , 00. [8] B. Z. Kaplan and S. T. Bachar, A versatile voltage controlled three phase oscillator, IEEE Transaction on Industrial Electronics and ontrol Instrumentation, vol. 6, pp. 9-95, 979. [9] A. Rahman and S. E. Haque, A simple three-phase variablefrequency oscillation, International Journal of Electronics, vol. 5, pp. 8-89, 98. [0] V. P. Ramamurti and B. Ramaswami, A novel three-phase reference sinewave generator for PWM inverter, IEEE Transactions on Industrial Electronics, vol. 9, pp. 5-40, 98. [] W. B. Mikhael and S. Tu, ontinuous and switched-capacitor multiphase oscillators, IEEE Transactions on ircuits and Systems, vol., pp. 80-9, 984. []. Hou and B. Shen, Second-generation current conveyor-based multiphase sinusoidal oscillators, International Journal of Electronics, vol. 78, pp. 7-5, 995. [] D. S. Wu, S. I. Liu, Y. S. Hwang and Y. P. Wu, Multiphase sinusoidal oscillator using second-generation current conveyors, International Journal of Electronics, vol. 78, pp , 995. [4] D. S. Wu, S. I. Liu, Y. S. Hwang and Y. P. Wu, Multiphase sinusoidal oscillator using the FOA pole, IEE Proceeding on ircuits, Devices and Systems, vol. 4, pp. 7-40, 995. [5] S. J. G. Gift, Multiphase sinusoidal oscillator system using operational amplifiers, International Journal of Electronics, vol. 8, pp. 6-67, 997. [6] S. J. G. Gift, Multiphase sinusoidal oscillator using inverting-mode operational amplifiers, IEEE Transactions on Instrumentation and Measurement, vol. 47, pp , 998. [7] M. T. Abuelma atti and M. A. Al-Qahani, A new currentcontrolled multiphase sinusoidal oscillator using translinear current conveyor, IEEE Transactions on ircuits and Systems-II: Analog and Digital Signal Processing, vol. 45, pp , 998. [8] M. Bhusan and R.W. Newcomb, Grounding of capacitors in integrated circuits, Electronics Letters, vol., pp , 967. [9] M. Tan and R. Schaumann, Simulation general L-ladder filters for monolithic realizations with only transconductance elements and grounded capacitors, IEEE Transaction on ircuits and Systems, vol. 6, pp , 989. [0] S. Szczepanski, A. Wyazynski, and R. Schaumann, High linear voltage-controlled MOS transconductances, IEEE Transaction on ircuits and Systems, vol. 40, pp. 58-6, 99. ETI-ON 007 The 007 ETI International onference 44
VOLTAGE-MODE UNIVERSAL BIQUADRATIC FILTER USING TWO OTAs
Active and Passive Elec. Comp., June 2004, Vol. 27, pp. 85 89 VOLTAGE-MODE UNIVERSAL BIQUADRATIC FILTER USING TWO OTAs JIUN-WEI HORNG* Department of Electronic Engineering, Chung Yuan Christian University,
More informationVoltage-mode OTA-based active-c universal filter and its transformation into CFA-based RC-filter
Indian Journal of Pure & Applied Physics Vol. 44, May 006, pp. 40-406 Voltage-mode OTA-based active-c universal filter and its transformation into CFA-based RC-filter N A Shah & M F Rather Department of
More informationA Novel Equi-amplitude Quadrature Oscillator Based on CFOA
A Novel Equiamplitude Quadrature Oscillator Based on CFOA Sahaj Saxena 1, Prabhat Kumar Mishra 2 1 Indian Institute of Technology, Roorkee 2 D. J. College of Engineering & Technology, Modinagar mrsahajsaxena@hotmail.com,
More informationSYSTEMATIC SYNTHESIS FOR ELECTRONIC-CONTROL LC OSCILLATORS USING SECOND ORDER CURRENT-CONTROLLED CONVEYOR
Rev. Roum. Sci. Techn. Électrotechn. et Énerg. Vol. 63, 1, pp. 71 76, Bucarest, 2018 Électronique et transmission de l information SYSTEMATI SYNTHESIS FOR ELETRONI-ONTROL L OSILLATORS USING SEOND ORDER
More informationNew Simple Square-Rooting Circuits Based on Translinear Current Conveyors
10 ECTI TRANSACTIONS ON ELECTRICAL ENG., ELECTRONICS, AND COMMUNICATIONS VOL.5, NO.1 February 2007 New Simple Square-Rooting Circuits Based on Translinear Current Conveyors Chuachai Netbut 1, Montree Kumngern
More informationDual-mode Multiphase Sinusoidal Oscillator using CDBAs
Dual-mode Multiphase Sinusoidal Oscillator usin DBAs D. Pulsub and W. Surakampontorn Faculty of Enineerin, in Monkut s Institute of Technoloy Ladkraban (MITL), Ladkraban, Bankok 1050, THAILAD E-mail: tump555@hotmail.com,
More informationCurrent differencing transconductance amplifier-based current-mode four-phase quadrature oscillator
Indian Journal of Engineering & Materials Sciences Vol. 14, August 2007, pp. 289-294 Current differencing transconductance amplifier-based current-mode four-phase quadrature oscillator Worapong Tangsrirat*
More informationFriday, 1/27/17 Constraints on A(jω)
Friday, 1/27/17 Constraints on A(jω) The simplest electronic oscillators are op amp based, and A(jω) is typically a simple op amp fixed gain amplifier, such as the negative gain and positive gain amplifiers
More informationGeneration of Voltage-Mode OTRA-R/MOS-C LP, BP, HP, and BR Biquad Filter
Recent Researches in Instrumentation, Measurement, ircuits and Systems eneration of Voltage-Mode OTRA-R/MOS- LP, BP, HP, and BR Biquad Filter hun-ming hang, Young-Ja Ko, Zhe-Yu uo, hun-li Hou*, and Jiun-Wei
More informationNonlinear Macromodeling of Amplifiers and Applications to Filter Design.
ECEN 622(ESS) Nonlinear Macromodeling of Amplifiers and Applications to Filter Design. By Edgar Sanchez-Sinencio Thanks to Heng Zhang for part of the material OP AMP MACROMODELS Systems containing a significant
More informationECEN 474/704 Lab 7: Operational Transconductance Amplifiers
ECEN 474/704 Lab 7: Operational Transconductance Amplifiers Objective Design, simulate and layout an operational transconductance amplifier. Introduction The operational transconductance amplifier (OTA)
More informationInter-Ing INTERDISCIPLINARITY IN ENGINEERING SCIENTIFIC INTERNATIONAL CONFERENCE, TG. MUREŞ ROMÂNIA, November 2007.
Inter-Ing 2007 INTERDISCIPLINARITY IN ENGINEERING SCIENTIFIC INTERNATIONAL CONFERENCE, TG. MUREŞ ROMÂNIA, 15-16 November 2007. A FULLY BALANCED, CCII-BASED TRANSCONDUCTANCE AMPLIFIER AND ITS APPLICATION
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 informationAdvanced Materials Manufacturing & Characterization. Active Filter Design using Bulk Driven Operational Transconductance Amplifier Topology
Advanced Materials Manufacturing & Characterization Vol 3 Issue 1 (2013) Advanced Materials Manufacturing & Characterization journal home page: www.ijammc-griet.com Active Filter Design using Bulk Driven
More informationWien oscillators using current conveyors
PERGAMON Computers and Electrical Engineering 25 (1999) 45±55 Wien oscillators using current conveyors A.M. Soliman *, A.S. Elwakil Electronics and Communications Engineering Department, Cairo University,
More informationThursday, 1/23/19 Automatic Gain Control As previously shown, 1 0 is a nonlinear system that produces a limit cycle with a distorted sinusoid for
Thursday, 1/23/19 Automatic Gain Control As previously shown, 1 0 is a nonlinear system that produces a limit cycle with a distorted sinusoid for x(t), which is not a very good sinusoidal oscillator. A
More informationPARTIALLY ACTIVE-R GROUNDED-CAPACITOR
Active and Passive Elec. Comp., 1996, Vol. 19, pp. 105-109 Reprints available directly from the publisher Photocopying permitted by license only (C) 1996 OPA (Overseas Publishers Association) Amsterdam
More informationResearch Article A New Translinear-Based Dual-Output Square-Rooting Circuit
Active and Passive Electronic Components Volume 28, Article ID 62397, 5 pages doi:1.1155/28/62397 Research Article A New Translinear-Based Dual-Output Square-Rooting Circuit Montree Kumngern and Kobchai
More informationA NEW CMOS DESIGN AND ANALYSIS OF CURRENT CONVEYOR SECOND GENERATION (CCII)
A NEW CMOS DESIGN AND ANALSIS OF CUENT CONVEO SECOND GENEATION () MAHMOUD AHMED SHAKTOU 1, FATHI OMA ABUBIG 2, AlAA OUSEF OKASHA 3 1 Elmergib University, Faculty of Science, Department of Physics. 2 Al-
More informationNonlinear Macromodeling of Amplifiers and Applications to Filter Design.
ECEN 622 Nonlinear Macromodeling of Amplifiers and Applications to Filter Design. By Edgar Sanchez-Sinencio Thanks to Heng Zhang for part of the material OP AMP MACROMODELS Systems containing a significant
More informationEfficient Current Feedback Operational Amplifier for Wireless Communication
International Journal of Electronics and Communication Engineering. ISSN 0974-2166 Volume 10, Number 1 (2017), pp. 19-24 International Research Publication House http://www.irphouse.com Efficient Current
More informationDVCC Based Current Mode and Voltage Mode PID Controller
DVCC Based Current Mode and Voltage Mode PID Controller Mohd.Shahbaz Alam Assistant Professor, Department of ECE, ABES Engineering College, Ghaziabad, India ABSTRACT: The demand of electronic circuit with
More informationCurrent Controlled Current Conveyor (CCCII) and Application using 65nm CMOS Technology
Current Controlled Current Conveyor (CCCII) and Application using 65nm CMOS Technology Zia Abbas, Giuseppe Scotti and Mauro Olivieri Abstract Current mode circuits like current conveyors are getting significant
More informationLossy and Lossless Current-mode Integrators using CMOS Current Mirrors
International Journal of Engineering Research and Development e-issn: 2278-67X, p-issn: 2278-8X, www.ijerd.com Volume 9, Issue 3 (December 23), PP. 34-4 Lossy and Lossless Current-mode Integrators using
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 informationChaotic-Based Processor for Communication and Multimedia Applications Fei Li
Chaotic-Based Processor for Communication and Multimedia Applications Fei Li 09212020027@fudan.edu.cn Chaos is a phenomenon that attracted much attention in the past ten years. In this paper, we analyze
More informationREALIZATION OF SOME NOVEL ACTIVE CIRCUITS SYNOPSIS
REALIZATION OF SOME NOVEL ACTIVE CIRCUITS SYNOPSIS Filter is a generic term to describe a signal processing block. Filter circuits pass only a certain range of signal frequencies and block or attenuate
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 informationBasic distortion definitions
Conclusions The push-pull second-generation current-conveyor realised with a complementary bipolar integration technology is probably the most appropriate choice as a building block for low-distortion
More informationLecture 2: Non-Ideal Amps and Op-Amps
Lecture 2: Non-Ideal Amps and Op-Amps Prof. Ali M. Niknejad Department of EECS University of California, Berkeley Practical Op-Amps Linear Imperfections: Finite open-loop gain (A 0 < ) Finite input resistance
More informationINTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY
[Alsibai, 2(4): April, 2013] ISSN: 2277-9655 IJESRT INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY Floating-Gate MOSFET Based Tunable Voltage Differencing Transconductance Amplifier
More informationPWL Function Approximation Circuit with Diodes and Current Input and Output
PWL Function Approximation Circuit with Diodes and Current Input and Output DAVID KUBANEK, KAMIL VRBA Department of Telecommunications Brno University of Technology Purkynova 8, 62 Brno CZECH REPUBLIC
More informationGeneration of Voltage-Mode OTRA-Based Multifunction Biquad Filter
eneration of Voltage-Mode OTRA-Based Multifunction Biquad Filter Chun-Ming Chang, Ying-Tsai Lin, Chih-Kuei Hsu, Chun-Li Hou*, and Jiun-Wei Horng* epartment of Electrical/*Electronic Engineering Chung Yuan
More informationCLASS AB amplifiers have a wide range of applications in
IEEE TRANSATIONS ON IRUITS AND SYSTEMS II: EXPRESS BRIEFS onverting a Three- Pseudo-lass AB Amplifier to a True lass AB Amplifier Punith R. Surkanti, Student Member, IEEE and Paul M. Furth, Senior Member,
More informationOn the New Design of CFA based Voltage Controlled Integrator/ Differentiator Suitable for Analog Signal Processing
On the New Design of CFA based Voltage Controlled Integrator/ Differentiator Suitable for Analog Signal Processing R. K. NAGARIA Department of Electronics and Communication Engineering otilal Nehru National
More informationMicroelectronics Exercises of Topic 5 ICT Systems Engineering EPSEM - UPC
Microelectronics Exercises of Topic 5 ICT Systems Engineering EPSEM - UPC F. Xavier Moncunill Autumn 2018 5 Analog integrated circuits Exercise 5.1 This problem aims to follow the steps in the design of
More information220 S. MAHESHWARI AND I. A. KHAN 2 DEVICE PROPOSED The already reported CDBA is characterized by the following port relationship [7]. V p V n 0, I z I
Active and Passive Electronic Components December 2004, No. 4, pp. 219±227 CURRENT-CONTROLLED CURRENT DIFFERENCING BUFFERED AMPLIFIER: IMPLEMENTATION AND APPLICATIONS SUDHANSHU MAHESHWARI* and IQBAL A.
More informationDigitally Programmable Voltage Mode Quadrature Oscillator Using Current Conveyors
International Journal of Engineering eearch and Development e-iss: 78-67X, p-iss : 78-8X, www.ijerd.com Volume, Iue 8 (January 3), PP. -6 Digitally Programmable Voltage Mode Quadrature Ocillator Uing urrent
More informationResearch Article Quadrature Oscillators Using Operational Amplifiers
Active and Passive Electronic Components Volume 20, Article ID 320367, 4 pages doi:0.55/20/320367 Research Article Quadrature Oscillators Using Operational Amplifiers Jiun-Wei Horng Department of Electronic,
More informationA new high frequency realization of Chua s chaotic circuit using current feedback operational amplifiers (CFOA s)
International Journal of Electronics and Computer Science Engineering 223 Available Online at www.ijecse.org ISSN: 2277-1956 A new high frequency realization of Chua s chaotic circuit using current feedback
More informationEE 508. Lecture 39. Current Mode Filters
EE 508 Lecture 39 urrent Mode Filters 1 urrent-mode Filters urrent-mode Filters have become a topic of considerable interest in recent years onsider first a brief background about filters 2 Recall: John
More informationNovel MOS-C oscillators using the current feedback op-amp
INT. J. ELECTRONICS, 2000, VOL. 87, NO. 3, 269± 280 Novel MOS-C oscillators using the current feedback op-amp SOLIMAN A. MAHMOUDy and AHMED M. SOLIMANyz Three new MOS-C oscillators using the current feedback
More informationExperiment 1: Amplifier Characterization Spring 2019
Experiment 1: Amplifier Characterization Spring 2019 Objective: The objective of this experiment is to develop methods for characterizing key properties of operational amplifiers Note: We will be using
More informationG m /I D based Three stage Operational Amplifier Design
G m /I D based Three stage Operational Amplifier Design Rishabh Shukla SVNIT, Surat shuklarishabh31081988@gmail.com Abstract A nested Gm-C compensated three stage Operational Amplifier is reviewed using
More informationTest Your Understanding
074 Part 2 Analog Electronics EXEISE POBLEM Ex 5.3: For the switched-capacitor circuit in Figure 5.3b), the parameters are: = 30 pf, 2 = 5pF, and F = 2 pf. The clock frequency is 00 khz. Determine the
More informationOSCILLATORS AND WAVEFORM-SHAPING CIRCUITS
OSILLATORS AND WAVEFORM-SHAPING IRUITS Signals having prescribed standard waveforms (e.g., sinusoidal, square, triangle, pulse, etc). To generate sinusoidal waveforms: o Positive feedback loop with non-linear
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 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 informationC H A P T E R 02. Operational Amplifiers
C H A P T E R 02 Operational Amplifiers The Op-amp Figure 2.1 Circuit symbol for the op amp. Figure 2.2 The op amp shown connected to dc power supplies. The Ideal Op-amp 1. Infinite input impedance 2.
More informationRich Variety of Bifurcation and Chaos in a Simple Non-Source Free Electronic Circuit with a Diode
International Journal of Pure and Applied Physics ISSN 0973-1776 Volume 6, Number 1 (2010), pp. 63 69 Research India Publications http://www.ripublication.com/ijpap.htm Rich Variety of Bifurcation and
More informationDifferential Difference Current Conveyor Based Cascadable Voltage Mode First Order All Pass Filters
Differential Difference Current Conveyor Based Cascadable ltage Mode First Order All Pass Filters P..S. MURALI KRISHNA, NAEEN KUMAR, AIRENI SRINIASULU, R.K.LAL Department of Electronics & Communication
More informationNEW CFOA-BASED GROUNDED-CAPACITOR SINGLE-ELEMENT-CONTROLLED
Active and Passive Elec. Comp., 1997, Vol. 20, pp. 19-124 Reprints available directly from the publisher Photocopying permitted by license only (C) 1997 OPA (Overseas Publishers Association) Amsterdam
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 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 informationA New Design Technique of CMOS Current Feed Back Operational Amplifier (CFOA)
Circuits and Systems, 2013, 4, 11-15 http://dx.doi.org/10.4236/cs.2013.41003 Published Online January 2013 (http://www.scirp.org/journal/cs) A New Design Technique of CMOS Current Feed Back Operational
More information55:041 Electronic Circuits The University of Iowa Fall Exam 3. Question 1 Unless stated otherwise, each question below is 1 point.
Exam 3 Name: Score /65 Question 1 Unless stated otherwise, each question below is 1 point. 1. An engineer designs a class-ab amplifier to deliver 2 W (sinusoidal) signal power to an resistive load. Ignoring
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 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 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 informationECEN 5008: Analog IC Design. Final Exam
ECEN 5008 Initials: 1/10 ECEN 5008: Analog IC Design Final Exam Spring 2004 Instructions: 1. Exam Policy: Time-limited, 150-minute exam. When the time is called, all work must stop. Put your initials on
More informationAND LOWPASS FILTERS CURRENT-MODE GROUNDED-CAPACITOR SINGLE-ELEMENT-CONTROLLED BANDPASS
Active and Passive Elec. Comp., 1995, Vol. 17, pp. 233-237 Reprints available directly from the publisher Photocopying permitted by license only 1995 OPA (Overseas Publishers Association) Amsterdam BV.
More informationThird Op.amp. Abstract. 1. Introduction. Treatment. electronically. respect to the. aharashtra, India. responses, gains, tion. A S A 0.
Circuits and Systems, 1, 1, 65-7 doi:1.46/cs. 1.111 Published Online October 1 (http://www.scirp.or/journal/cs) Third Orderr Current Mode Universal Filter Usin Only Op.amp and OTAs G. N. Shinde 1, D. D.
More informationDesigning a fully integrated low noise Tunable-Q Active Inductor for RF applications
Designing a fully integrated low noise Tunable-Q Active Inductor for RF applications M. Ikram Malek, Suman Saini National Institute of technology, Kurukshetra Kurukshetra, India Abstract Many architectures
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 informationISSN Page 32. Figure 1.1: Black box representation of the basic current conveyor.
DESIGN OF CURRENT CONVEYOR USING OPERATIONAL AMPLIFIER Nidhi 1, Narender kumar 2 1 M.tech scholar, 2 Assistant Professor, Deptt. of ECE BRCMCET, Bahal 1 nidhibajaj44@g mail.com Abstract-- The paper focuses
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 informationDesign of a Sample and Hold Circuit using Rail to Rail Low Voltage Compact Operational Amplifier and bootstrap Switching
RESEARCH ARTICLE OPEN ACCESS Design of a Sample and Hold Circuit using Rail to Rail Low Voltage Compact Operational Amplifier and bootstrap Switching Annu Saini, Prity Yadav (M.Tech. Student, Department
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 informationAmplitude Control of Twin-T and Phase-Shift Oscillators Based on Direct Feedback Control Technique
NU Science Journal 2013; 10(2): 10-17 Amplitude ontrol of Twin-T and Phase-Shift Oscillators ased on Direct Feedback ontrol Technique Anucha Kaewpoonsuk 1, Ayutthaya Sri-in 1 and atchanoo Katman 2* 1 Physics-Electronics
More informationDESIGN AND VERIFICATION OF ANALOG PHASE LOCKED LOOP CIRCUIT
DESIGN AND VERIFICATION OF ANALOG PHASE LOCKED LOOP CIRCUIT PRADEEP G CHAGASHETTI Mr. H.V. RAVISH ARADHYA Department of E&C Department of E&C R.V.COLLEGE of ENGINEERING R.V.COLLEGE of ENGINEERING Bangalore
More informationElectronically-Controlled Current-Mode Second Order Sinusoidal Oscillators Using MO-OTAs and Grounded Capacitors
Circuits and Systems, 20, 2, 6573 doi:0.4236/cs.20.220 Published Online April 20 (http://www.scirp.or/journal/cs) ElectronicallyControlled CurrentMode Second Order Sinusoidal Oscillators Usin MOOTAs and
More informationSeventh-order elliptic video filter with 0.1 db pass band ripple employing CMOS CDTAs
Int. J. Electron. Commun. (AEÜ) 61 (2007) 320 328 www.elsevier.de/aeue LETTER Seventh-order elliptic video filter with 0.1 db pass band ripple employing CMOS CDTAs Atilla Uygur, Hakan Kuntman Department
More informationResearch Article Sinusoidal Generator with π/4-shifted Four/Eight Voltage Outputs Employing Four Grounded Components and Two/Six Active Elements
Active and Passive Electronic Components, Article ID 4859, 7 pages http://dx.doi.org/1.1155/214/4859 Research Article Sinusoidal Generator with π/4-shifted Four/Eight Voltage Outputs Employing Four Grounded
More informationDesign of Dynamic Frequency Divider using Negative Differential Resistance Circuit
Design of Dynamic Frequency Divider using Negative Differential Resistance Circuit Kwang-Jow Gan 1*, Kuan-Yu Chun 2, Wen-Kuan Yeh 3, Yaw-Hwang Chen 2, and Wein-So Wang 2 1 Department of Electrical Engineering,
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 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 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 informationFOR applications such as implantable cardiac pacemakers,
1576 IEEE JOURNAL OF SOLID-STATE CIRCUITS, VOL. 32, NO. 10, OCTOBER 1997 Low-Power MOS Integrated Filter with Transconductors with Spoilt Current Sources M. van de Gevel, J. C. Kuenen, J. Davidse, and
More information6.776 High Speed Communication Circuits and Systems Lecture 14 Voltage Controlled Oscillators
6.776 High Speed Communication Circuits and Systems Lecture 14 Voltage Controlled Oscillators Massachusetts Institute of Technology March 29, 2005 Copyright 2005 by Michael H. Perrott VCO Design for Narrowband
More informationA 24 V Chopper Offset-Stabilized Operational Amplifier with Symmetrical RC Notch Filters having sub-10 µv offset and over-120db CMRR
ROMANIAN JOURNAL OF INFORMATION SCIENCE AND TECHNOLOGY Volume 20, Number 4, 2017, 301 312 A 24 V Chopper Offset-Stabilized Operational Amplifier with Symmetrical RC Notch Filters having sub-10 µv offset
More informationECEN 474/704 Lab 5: Frequency Response of Inverting Amplifiers
ECEN 474/704 Lab 5: Frequency Response of Inverting Amplifiers Objective Design, simulate and layout various inverting amplifiers. Introduction Inverting amplifiers are fundamental building blocks of electronic
More informationSOLIMAN A. MAHMOUD Department of Electrical Engineering, Faculty of Engineering, Cairo University, Fayoum, Egypt
Journal of Circuits, Systems, and Computers Vol. 14, No. 4 (2005) 667 684 c World Scientific Publishing Company DIGITALLY CONTROLLED CMOS BALANCED OUTPUT TRANSCONDUCTOR AND APPLICATION TO VARIABLE GAIN
More informationA New Approach for Op-amp based VCO Design Using 0.18um CMOS Technology
International Journal of Industrial Electronics and Control. ISSN 0974-2220 Volume 6, Number 1 (2014), pp. 1-5 International Research Publication House http://www.irphouse.com A New Approach for Op-amp
More informationWhen you have completed this exercise, you will be able to relate the gain and bandwidth of an op amp
Op Amp Fundamentals When you have completed this exercise, you will be able to relate the gain and bandwidth of an op amp In general, the parameters are interactive. However, in this unit, circuit input
More informationSINGLE OTRA BASED PD CONTROLLERS
SINGLE OTRA BASED PD CONTROLLERS RAJESHWARI PANDEY Department of Electronics and Communication Engineering, Delhi Technological University, Shahbad Daulatpur, Bawana Road, Delhi, 110042, India rajeshwaripandey@gmail.com
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 informationOperational Amplifiers
CHAPTER 9 Operational Amplifiers Analog IC Analysis and Design 9- Chih-Cheng Hsieh Outline. General Consideration. One-Stage Op Amps / Two-Stage Op Amps 3. Gain Boosting 4. Common-Mode Feedback 5. Input
More informationA HIGH FIGURE-OF-MERIT LOW PHASE NOISE 15-GHz CMOS VCO
82 Journal of Marine Science and Technology, Vol. 21, No. 1, pp. 82-86 (213) DOI: 1.6119/JMST-11-123-1 A HIGH FIGURE-OF-MERIT LOW PHASE NOISE 15-GHz MOS VO Yao-hian Lin, Mei-Ling Yeh, and hung-heng hang
More informationUNIVERSITI MALAYSIA PERLIS
UNIVERSITI MALAYSIA PERLIS ANALOG ELECTRONICS II EMT 212 2009/2010 EXPERIMENT # 3 OP-AMP (OSCILLATORS) 1 1. OBJECTIVE: 1.1 To demonstrate the Wien bridge oscillator 1.2 To demonstrate the RC phase-shift
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 informationA high-speed CMOS current op amp for very low supply voltage operation
Downloaded from orbit.dtu.dk on: Mar 31, 2018 A high-speed CMOS current op amp for very low supply voltage operation Bruun, Erik Published in: Proceedings of the IEEE International Symposium on Circuits
More informationResearch Article Third-Order Quadrature Oscillator Circuit with Current and Voltage Outputs
ISRN Electronics Volume 213, Article ID 38562, 8 pages http://dx.doi.org/1.1155/213/38562 Research Article Third-Order Quadrature Oscillator Circuit with Current and Voltage Outputs Bhartendu Chaturvedi
More informationHomework Assignment 07
Homework Assignment 07 Question 1 (Short Takes). 2 points each unless otherwise noted. 1. A single-pole op-amp has an open-loop low-frequency gain of A = 10 5 and an open loop, 3-dB frequency of 4 Hz.
More informationOperational Amplifier BME 360 Lecture Notes Ying Sun
Operational Amplifier BME 360 Lecture Notes Ying Sun Characteristics of Op-Amp An operational amplifier (op-amp) is an analog integrated circuit that consists of several stages of transistor amplification
More informationDesign and Analysis of Current-to-Voltage and Voltage - to-current Converters using 0.35µm technology
Design and Analysis of Current-to-Voltage and Voltage - to-current Converters using 0.35µm technology Kopal Gupta 1, Prof. B. P Singh 2, Rockey Choudhary 3 1 M.Tech (VLSI Design ) at Mody Institute of
More informationUnit WorkBook 1 Level 4 ENG U22 Electronic Circuits and Devices 2018 UniCourse Ltd. All Rights Reserved. Sample
Pearson BTEC Level 4 Higher Nationals in Engineering (RQF) Unit 22: Electronic Circuits and Devices Unit Workbook 1 in a series of 4 for this unit Learning Outcome 1 Operational Amplifiers Page 1 of 23
More informationRail to rail CMOS complementary input stage with only one active differential pair at a time
LETTER IEICE Electronics Express, Vol.11, No.12, 1 5 Rail to rail CMOS complementary input stage with only one active differential pair at a time Maria Rodanas Valero 1a), Alejandro Roman-Loera 2, Jaime
More informationA Simple On-Chip Automatic Tuning Circuit for Continuous-Time Filter
Int. J. Communications, Network and System Sciences, 010, 3, 66-71 doi:10.436/ijcns.010.31009 Published Online January 010 (http://www.scirp.org/journal/ijcns/). A Simple On-Chip Automatic Tuning Circuit
More informationLow-Voltage CMOS Current Feedback Operational Amplifier and Its Application
Low-oltage MS urrent Feedback perational Amplifier and Its Application Soliman A. Mahmoud, Ahmed H. Madian, and Ahmed M. Soliman A novel low-voltage MS current feedback operational amplifier (FA) is presented.
More informationHomework Assignment 07
Homework Assignment 07 Question 1 (Short Takes). 2 points each unless otherwise noted. 1. A single-pole op-amp has an open-loop low-frequency gain of A = 10 5 and an open loop, 3-dB frequency of 4 Hz.
More information