Low Noise, High-Speed Dual Operational Amplifier. Vni = 3nV/ Hz typ. (at f=10khz) ft = 90MHz typ. (at V + /V - = ±2.5V)

Transcription

1 Low Noise, High-Speed Dual Operational Amplifier NJM2719 GENERAL DESCRIPTION The NJM2719 is a high speed voltage feedback dual operational amplifier specifically optimized for low voltage noise. Combining a voltage noise of 2.n/ Hz typ. (at f =1kHz) and unity gain of 1MHz, the NJM2719 is ideal for I/Q baseband amplifier, RFID reader application and other wireless communication system designs. The NJM2719 is available in two 8-lead package options: tiny fine pitch surface mount (SSOP/MSOP). PACKAGE OUTLINE NJM2719RB1 (MSOP8(TSP8)) NJM2719 (SSOP8) FEATURES Low Noise Unity Gain Bandwidth Phase Margin Slew Rate Output Rail-to-Rail ni = 2.n/ Hz typ. (at f=1khz) ni = 3n/ Hz typ. (at f=1khz) ft = 1MHz typ. (at + / - = ±) ft = 9MHz typ. (at + / - = ±2.) Φm = 6deg typ. 6/µs typ. (at + / - = ±) 3/µs typ. (at + / - = ±2.) OH +4.7, OL -4.8 (at + / - = ±) OH +2.4, OL -2.4 (at + / - = ±2.) Operating oltage ±2.2 ~ ± Bipolar Technology Package Outline NJM2719 : SSOP8 NJM2719RB1 : MSOP8 (TSP8) MEET JEDEC MO-187-DA / THIN TYPE APPLICATION Wireless Communication Equipment I/Q Baseband Application RFID Reader Application Active Filter ADC/DAC Buffer Ultrasound Amplifier PIN CONFIGURATION A OUTPUT 1 A -INPUT 2 ( Top iew ) B OUTPUT A +INPUT B -INPUT - 4 B +INPUT SSOP8 [NJM2719] MSOP8(TSP8) [NJM2719RB1] er

2 ABSOLUTE MAXIMUM RATINGS (Ta=2 C) PARAMETER SYMBOL RATINGS UNIT Supply oltage + ±. Common Mode Input oltage Range ICM ±. (Note1) Differential Input oltage Range ID ±3 Power Dissipation P D 31[SSOP8], 4[MSOP8(TSP8)] mw 41[SSOP8](Note2), 1[MSOP8(TSP8)] (Note2) mw Operating Temperature Range T opr -4 to +8 C Storage Temperature Range T s t g - to +1 C (Note 1) The output voltage of normal operation will be the Output oltage Swing of electrical characteristics. (Note 2) On the PCB " EIA/JEDEC (114.3x76.2x1.7mm, two layers, FR-4) " (Note 3) Do not exceed "Power dissipation: PD" in which power dissipation in IC is shown by the absolute maximum rating. Refer to following Figure 1 for a permissible loss when ambient temperature (Ta) is Ta 2 o C. Figure1: Power Dissipation Ambient Temperature Package type 6 (4) (1)SSOP8 : ΔP D = -2.(mW/ C) (2)SSOP8[tw o layer] : ΔP D = -3.4(mW/ C) (3)MSOP8(TSP8) : ΔP D = -3.2(mW/ C) (4)MSOP8(TSP8) [tw o layer] : ΔP D = -4.(mW/ C) (2) Power Dissipation PD(mW) (3) (1) Ambient Temperature Ta( ) er

3 OPERATING OLTAGE (Ta=2 C) Supply oltage + / - (Note3) ±2.2 - ±. ELECTRICAL CHARACTERISTICS DC CHARACTERISTICS ( + / =±2., Ta=2 C) Supply Current Icc No Signal ma Input Offset oltage IO Rs=Ω m Input Offset oltage Drift Δio/ΔT Rs=Ω µ/deg Input Bias Current I B µa Input Offset Current I IO µa oltage Gain Av R L = 1kΩ to, o = ± db Common Mode Rejection Ratio CMR -2 CM db Supply oltage Rejection Ratio SR ±2.2 + / - ± db Maximum Output oltage 1 Maximum Output oltage 2 Common Mode Input oltage Range OH R L = 1kΩ to OL OH2 Isource =4mA, +Input =+.1, -Input = OL2 Isink =4mA, +Input =-.1, -Input = ICM CMR 82dB ICM AC CHARACTERISTICS ( + / =±2., Ta=2 C) Unity Gain ft Av=+4dB, MHz Phase Margin φm Rf =1.98kΩ, Rg =2Ω, deg Gain Margin Gm R L =1kΩ to, C L =pf db Equivalent Input Noise oltage NI1 f =1kHz NI2 f =1kHz n/ Hz Equivalent Input Noise Current I NI f =1kHz pa/ Hz Channel Separation CS f =1MHz, in =.2pp, Av =+1, R L =1kΩ to, C L =pf db TRANSIENT CHARACTERISTICS ( + / =±2., Ta=2 C) Slew Rate 1 Slew Rate 2 +SR1 Av =db, R L =1kΩ to, C L =pf, SR1 out =2pp SR2 Av =+6dB, R L =1kΩ to, C L =pf, SR2 out =2pp Rise Time tr Av =+6dB, R L =1kΩ to, C L =pf, Fall Time tf out =.2pp, 1% to 9% Power Band Width Total Harmonic Distortion PBW THD Av =+6dB, R L =1kΩ to, C L =pf, out =2pp, HD2-4dB, HD3-4dB Av =+6dB, R L =1kΩ to, C L =pf, f =1kHz, out =2pp /μs /μs ns MHz % Second Harmonic HD2 Av =+6dB, R L =1kΩ to, C L =pf, Third Harmonic HD3 f =1MHz, out =2pp Settling time (1%) ts1 Av =+6dB, R L =1kΩ to, C L =pf, Settling time (.1%) ts2 out =2pp dbc ns er

4 DC CHARACTERISTICS ( + / =±, Ta=2 C) Supply Current Icc No Signal ma Input Offset oltage IO Rs=Ω m Input Offset oltage Drift Δio/ΔT Rs=Ω µ/deg Input Bias Current I B µa Input Offset Current I IO µa oltage Gain Av R L = 1kΩ to, o = ± db Common Mode Rejection Ratio CMR -4. CM db Supply oltage Rejection Ratio SR ±2.2 + / - ± db Maximum Output oltage 1 Maximum Output oltage 2 Common Mode Input oltage Range OH R L = 1kΩ to OL OH2 Isource =ma, +Input =+.1, -Input = OL2 Isink =ma, +Input =-.1, -Input = ICM CMR 82dB ICM AC CHARACTERISTICS ( + / =±, Ta=2 C) Unity Gain ft Av=+4dB, MHz Phase Margin φm Rf =1.98kΩ, Rg =2Ω, deg Gain Margin Gm R L =1kΩ to, C L =pf db Equivalent Input Noise oltage NI1 f =1kHz NI2 f =1kHz n/ Hz Equivalent Input Noise Current I NI f =1kHz pa/ Hz Channel Separation CS f =1MHz, in =.2pp, Av =+1, R L =1kΩ to, C L =pf db TRANSIENT CHARACTERISTICS ( + / =±, Ta=2 C) Slew Rate 1 Slew Rate 2 +SR1 Av =db, R L =1kΩ to, C L =pf, SR1 out =pp SR2 Av =+6dB, R L =1kΩ to, C L =pf, - - -SR2 out =pp - - Rise Time tr Av =+6dB, R L =1kΩ to, C L =pf, Fall Time tf out =.2pp, 1% to 9% Power Band Width Total Harmonic Distortion PBW THD Av =+6dB, R L =1kΩ to, C L =pf, out =2pp, HD2-4dB, HD3-4dB Av =+6dB, R L =1kΩ to, C L =pf, f =1kHz, out =2pp /μs /μs ns MHz % Second Harmonic HD2 Av =+6dB, R L =1kΩ to, C L =pf, Third Harmonic HD3 f =1MHz, out =2pp Settling time (1%) ts1 Av =+6dB, R L =1kΩ to, C L =pf, Settling time (.1%) ts2 out =2pp dbc ns er

5 TYPICAL CHARACTERISTICS Equivalent Input oltage Noise [n/ Hz] Equivalent Input oltage Noise vs. Frequency + / - =±2., R S =Ω, R F =2kΩ, R G =2Ω, k 1k 1k Gain [db] Closed-Loop Gain/Phase vs. Frequency + / - =±2., R S =Ω, R F =2kΩ, R G =2Ω, R L =1kΩ, C L =pf Gain Phase T a =-4 C k 1M 1M 1M 1G T a =-4 C Phase [deg] Unity Gain Frequency Response Unity Gain Frequency Response 2 + / - =±2., R S =Ω, R L =1kΩ, Ta=2 C 2 + / - =±2., R S =Ω, R L =1kΩ, C L =pf C L =pf 1 Gain [db] - C L =1pF C L =2pF Gain [db] - T a =-4 C k 1M 1M 1M 1G -2 1k 1M 1M 1M 1G Gain [db] Unity Gain Frequency Response R S =Ω, R L =1kΩ, C L =pf, Ta=2 C + / - =± + / - =±2. Channel Separation [db] Channel Separation vs. Frequency + / - =±, O =.2pp, G =db, R L =1kΩ, C L =pf, Ta=2 C -2 1k 1M 1M 1M 1G 1k 1M 1M 1M er

6 Transinet Response Transient Response + / - =±2.,f=4MHz, O =2 PP,G =1,R T =Ω, R L =1kΩ, + / - =±,f=4mhz, O = PP,G =1,R T =Ω, R L =1kΩ, input input 1/div. C L =2pF 2/div. C L =2pF output C L =pf output C L =pf ns/div ns/div Transeint Response Transient Response + / - =±2.,f=4MHz, O =2 PP,G =1,R T =Ω, R L =1kΩ, C L =pf + / - =±,f=4mhz, O = PP,G =1,R T =Ω, R L =1kΩ, C L =pf input input 1/div. 2/div. output T a =-4 C output T a =-4 C ns/div ns/div 18 Supply Current vs. Supply oltage G =db, Ta=2 C 2 Supply Current vs. Temperature G =db, CM = Supply Current [ma] Supply Current [ma] / - =± + / - =±2. 2 ±1 ±2 ±3 ±4 ± ±6 Supply oltage [] er

7 Maximum Output oltage [] Maximum Output oltage vs.load Resistance + / - =±2., IN =±.2 T a =-4 C Load Resistance [Ω] Maximum Output oltage [] Maximum Output oltage vs. Supply oltage IN =±.2,R L =1kΩ T a =-4 C T a =-4 C Supply oltage [±] Maximum Output oltage vs. Output Current Maximum Output oltage vs. Output Current 3 + / - =±2., IN =± / - =±2., IN =±.2 Maximum Output oltage [] T a =-4 C Maximum Output oltage [] T a =-4 C Output Current [ma] Output Current [ma] Input Offset oltage [m] Input Offset oltage vs. Temperature CM = + / - =± + / - =± Input Offset oltage [m] Input Offset oltage vs. Input Common-mode oltage + / - =±2. Ta=-4 C Ta=2 C Ta=8 C Input Common-mode oltage [] er

8 12 Open-loop oltage Gain vs. Temperature OUT =-1 to +1, R L =1kΩ + / - =± 12 Supply oltage Rejection Ratio vs. Temperature + / - =±2.2 to ± Open-loop oltage Gain [db] / - =±2. Supply oltage Rejection Ratio [db] Common-mode Rejection Ratio [db] Common-mode Rejection Ratio vs. Temperature + / - = - +. to / - =± + / - =± Input Offset Current [μa] Input Offset Current vs. Temperature CM = + / - =± + / - =± er

9 APPLICATION Stability Generally, when driving a large capacitive load in low closed-loop gain or unity-gain configurations, circuit stability is reduced. In the case of using the NJM2719 for these configurations, it is necessary to care about unwanted oscillation. An effective way to improve stability and to avoid oscillation is to add an isolation resistor as shown in Figure 1. Figure 2 shows required resistor values (R ISO ) for stability versus load capacitances (C L ) in the unity-gain configuration (Figure 1). To ensure the stability, add a larger isolation resistor in Figure 2. (Resistor values in Figure2 are reference values when parasitic capacitance of an evaluation board is minimized.) 2 Supply oltage ± 2 IN - + R ISO C L OUT R ISO [Ω] 1 1 Supply oltage ±2. Figure C L [pf] Figure 2. Required Isolation Resistor values for stability, R ISO [ ], versus Capacitive Loads, C L [pf]. (G =db) er

10 NOTE [CAUTION] The specifications on this data book are only given for information, without any guarantee as regards either mistakes or omissions. The application circuits in this data book are described only to show representative usages of the product and not intended for the guarantee or permission of any right including the industrial rights er