® OPA OPA 2131 131 OPA 131 OPA 2131 OPA131 OPA2131 OPA4131 OPA 4131 OP A41 31 OPA 4131 General Purpose FET-INPUT OPERATIONAL AMPLIFIERS FEATURES OPA131 ● FET INPUT: IB = 50pA max ● LOW OFFSET VOLTAGE: 750µV max ● WIDE SUPPLY RANGE: ±4.5V to ±18V ● SLEW RATE: 10V/µs Offset Trim 1 8 NC –In 2 7 V+ +In 3 6 Output V– 4 5 Offset Trim 8 V+ 7 Out B 6 –In B 5 +In B ● WIDE BANDWIDTH: 4MHz ● EXCELLENT CAPACITIVE LOAD DRIVE 8-Pin DIP, SO-8 ● SINGLE, DUAL, QUAD VERSIONS DESCRIPTION The OPA131 series of FET-input op amps provides high performance at low cost. Single, dual and quad versions in industry-standard pinouts allow cost-effective design options. The OPA131 series offers excellent general purpose performance, including low offset voltage, drift, and good dynamic characteristics. OPA2131 Out A –In A 1 A 2 +In A 3 V– 4 B 8-Pin DIP, SO-8 Single, dual and quad versions are available in DIP and SOIC packages. Performance grades include commercial and industrial temperature ranges. OPA4131 OPA4131 Out A 1 14 Out D –In A 2 13 –In D +In A 3 12 +In D A 4 11 V– +In B 5 10 +In C –In B 6 9 –In C Out B 7 8 Out C B 1 –In A 2 A D V+ Out A 14-Pin DIP SO-14 Out D 15 –In D D +In A 3 14 +In D V+ 4 13 V– +In B 5 12 +In C B C 16 C –In B 6 11 –In C Out B 7 10 Out C NC 8 9 NC SOL-16 International Airport Industrial Park • Mailing Address: PO Box 11400 Tel: (520) 746-1111 • Twx: 910-952-1111 • Cable: BBRCORP • • Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd. • Tucson, AZ 85706 Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132 © 1994 Burr-Brown Corporation PDS-1256C Printed in U.S.A. January, 1996 SPECIFICATIONS At TA = +25°C, VS = ±15V, and RL = 2kΩ, unless otherwise noted. OPA131PA, UA OPA2131PA, UA OPA4131PA, UA, NA PARAMETER CONDITION OFFSET VOLTAGE Input Offset Voltage OPA131P, U models only vs Temperature(1) vs Power Supply OPA131P, U models only INPUT BIAS CURRENT(2) Input Bias Current vs Temperature Input Offset Current MIN Operating Temperature Range VS = ±4.5V to ±18V INPUT IMPEDANCE Differential Common-Mode OPEN-LOOP GAIN Open-Loop Voltage Gain OPA131P, U models only FREQUENCY RESPONSE Gain-Bandwidth Product Slew Rate Settling Time 0.1% 0.01% Total Harmonic Distortion + Noise VCM = 0V ±0.2 ±0.2 ±2 50 50 ±1 0.75 ±10 200 100 MIN 21 16 15 15 3 VCM = –12V to +14V (V–)+3 70 80 VO = –12V to +12V 94 100 (V+)–3 (V–)+3 ±4.5 IO = 0 TEMPERATURE RANGE Operating Range Storage Thermal Resistance, θJA 8-Pin DIP SO-8 Surface-Mount 14-Pin DIP SO-14, SOL-16 Surface-Mount (V+)–1 80 86 * * 110 110 * 4 10 1.5 2 0.0008 G = –1, 10V Step, CL = 100pF G = –1, 10V Step, CL = 100pF 1kHz, G = 1, VO = 3.5Vrms (V+)–2.5 (V–)+2.5 ±25 ±15 ±1.5 –40 –40 100 150 80 110 TYP MAX UNITS * ±1.5 * * * * mV mV µV/°C µV/V µV/V * * * * pA * pA * * * * * 1010 || 1 1012 || 3 VCM = 0V OUTPUT Voltage Output, Positive Negative Short-Circuit Current POWER SUPPLY Specified Operating Voltage Operating Voltage Range Quiescent Current (per amplifier) MAX +5 ±50 See Typical Curve ±1 ±50 VCM = 0V NOISE Input Voltage Noise Noise Density, f = 10Hz f = 100Hz f = 1kHz f = 10kHz Current Noise Density, f = 1kHz INPUT VOLTAGE RANGE Common-Mode Voltage Range Common-Mode Rejection OPA131P, U models only TYP OPA131PJ, UJ OPA2131PJ, UJ OPA4131PJ, NJ * * nV/√Hz nV/√Hz nV/√Hz nV/√Hz fA/√Hz * * V dB dB * * Ω || pF Ω || pF * dB dB * * * * * MHz V/µs µs µs % * * * V V mA * ±18 ±1.75 * +85 +125 0 * * * * * * * ±2 V V mA +70 * °C °C °C/W °C/W °C/W °C/W * Specifications same as OPA131PA, OPA131UA. NOTES: (1) Guaranteed by wafer test. (2) High-speed test at TJ = 25°C. The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN assumes no responsibility for the use of this information, and all use of such information shall be entirely at the user’s own risk. Prices and specifications are subject to change without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. BURR-BROWN does not authorize or warrant any BURR-BROWN product for use in life support devices and/or systems. ® OPA131/2131/4131 2 ELECTROSTATIC DISCHARGE SENSITIVITY ABSOLUTE MAXIMUM RATINGS Supply Voltage, V+ to V– .................................................................... 36V Input Voltage .................................................... (V–) –0.7V to (V+) +0.7V Output Short-Circuit(1) .............................................................. Continuous Operating Temperature ................................................. –40°C to +125°C Storage Temperature ..................................................... –40°C to +125°C Junction Temperature ...................................................................... 150°C Lead Temperature (soldering, 10s) ................................................. 300°C This integrated circuit can be damaged by ESD. Burr-Brown recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. NOTE: (1) Short-circuit to ground, one amplifier per package. ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more susceptible to damage because very small parametric changes could cause the device not to meet its published specifications. PACKAGE INFORMATION PACKAGE PACKAGE DRAWING NUMBER(1) Single OPA131PJ OPA131PA OPA131P OPA131UJ OPA131UA OPA131U 8-Pin Plastic DIP 8-Pin Plastic DIP 8-Pin Plastic DIP SO-8 Surface-Mount SO-8 Surface-Mount SO-8 Surface-Mount 006 006 006 182 182 182 Dual OPA2131PJ OPA2131PA OPA2131UJ OPA2131UA 8-Pin Plastic DIP 8-Pin Plastic DIP SO-8 Surface-Mount SO-8 Surface-Mount 006 006 182 182 Quad OPA4131PJ OPA4131PA OPA4131UA OPA4131NJ OPA4131NA 14-Pin Plastic DIP 14-Pin Plastic DIP SOL-16 Surface-Mount SO-14 Surface-Mount SO-14 Surface-Mount 010 010 211 235 235 MODEL NOTE: (1) For detailed drawing and dimension table, please see end of data sheet, or Appendix D of Burr-Brown IC Data Book. ORDERING INFORMATION MODEL PACKAGE TEMPERATURE RANGE Single OPA131PJ OPA131PA OPA131P OPA131UJ OPA131UA OPA131U 8-Pin Plastic DIP 8-Pin Plastic DIP 8-Pin Plastic DIP SO-8 Surface-Mount SO-8 Surface-Mount SO-8 Surface-Mount 0 to +70°C –40°C to +85°C –40°C to +85°C 0 to +70°C –40°C to +85°C –40°C to +85°C Dual OPA2131PJ OPA2131PA OPA2131UJ OPA2131UA 8-Pin Plastic DIP 8-Pin Plastic DIP SO-8 Surface-Mount SO-8 Surface-Mount 0 to +70°C –40°C to +85°C 0 to +70°C –40°C to +85°C Quad OPA4131PJ OPA4131PA OPA4131UA OPA4131NJ OPA4131NA 14-Pin Plastic DIP 14-Pin Plastic DIP SOL-16 Surface-Mount SO-14 Surface-Mount SO-14 Surface-Mount 0 to +70°C –40°C to +85°C –40°C to +85°C 0 to +70°C –40°C to +85°C ® 3 OPA131/2131/4131 TYPICAL PERFORMANCE CURVES At TA = +25°C, VS = ±15V, and RL = 2kΩ, unless otherwise noted. POWER SUPPLY AND COMMON-MODE REJECTION vs FREQUENCY OPEN-LOOP GAIN/PHASE vs FREQUENCY Power Supply Rejection (dB) 100 80 ∅ –90 60 40 –135 20 Phase Shift (°) Voltage Gain (dB) –45 G –180 0 120 100 80 80 –PSR 60 1 40 40 20 20 10 100 1k 10k 100k 1M 0 10 10M 100 1k Frequency (Hz) 10 10 Channel Separation (dB) Voltage Noise RL = ∞ 140 120 100 Current Noise 1 1 100 1k 1M 160 Current Noise (fA/√Hz) 100 100 10 100k CHANNEL SEPARATION vs FREQUENCY 1k 1k 1 10k Frequency (Hz) INPUT VOLTAGE AND CURRENT NOISE SPECTRAL DENSITY vs FREQUENCY Voltage Noise (nV/√Hz) 60 CMR 0 –20 10k 100k Dual and quad devices. G = 1, all channels. Quad measured channel A to D or B to C—other combinations yield improved rejection. RL = 2kΩ 80 10 1M 100 1k 10k 100k Frequency (Hz) Frequency (Hz) INPUT BIAS AND INPUT OFFSET CURRENT vs TEMPERATURE INPUT BIAS CURRENT vs INPUT COMMON-MODE VOLTAGE 1k 10k Input bias current is a function of the voltage between the V– supply and the inputs. 1k VCM = 0V 100 IB Input Bias Current (pA) Input Bias and Input Offset Current (pA) 100 +PSR IOS 10 1 100 VS = ±15V 10 0.1 VS = ±5V 1 –15 0.01 –75 –50 –25 0 25 50 75 100 125 ® OPA131/2131/4131 –10 –5 0 5 Common-Mode Voltage (V) Ambient Temperature (°C) 4 10 15 Common-Mode Rejection (dB) 120 0 120 TYPICAL PERFORMANCE CURVES (CONT) At TA = +25°C, VS = ±15V, and RL = 2kΩ, unless otherwise noted. QUIESCENT CURRENT AND SHORT-CIRCUIT CURRENT vs TEMPERATURE 1.8 120 40 IQ VS = ±15V – Quiescent Current (mA) ISC Voltage Gain (dB) 115 110 105 30 + ISC 1.4 20 IQ VS = ±5V 1.2 10 1 100 –75 –50 –25 0 25 50 75 100 0 –75 125 –50 –25 0 25 50 75 Ambient Temperature (°C) Temperature (°C) OFFSET VOLTAGE PRODUCTION DISTRIBUTION OFFSET VOLTAGE DRIFT PRODUCTION DISTRIBUTION 100 125 35 20 Typical production distribution of packaged units. Single, Typical production distribution of packaged units. Single, 30 dual and quad units included 15 dual and quad units included 25 Units (%) Units (%) 1.6 Short-Circuit Current (mA) OPEN-LOOP GAIN vs TEMPERATURE 10 20 15 10 5 5 0 1400 1200 800 1000 600 400 0 200 –200 –400 –600 –800 –1000 –1200 –1400 0 –7 –6 –5 –4 –3 –2 –1 0 1 2 3 4 5 6 7 Offset Voltage Drift (µV/°C) Offset Voltage (µV) MAXIMUM OUTPUT VOLTAGE vs FREQUENCY TOTAL HARMONIC DISTORTION + NOISE vs FREQUENCY 30 1 BandwidthLimited VS = ±15V Output Voltage (Vp-p) VO = 3.5Vrms THD + Noise (%) 0.1 G = 100V/V 0.01 G = 10V/V 0.001 Maximum output voltage without slew-rate induced distortion 20 10 VS = ±5V G = 1V/V 0 0.0001 10 100 1k 10k 10k 100k 100k 1M 10M Frequency (Hz) Frequency (Hz) ® 5 OPA131/2131/4131 TYPICAL PERFORMANCE CURVES (CONT) At TCASE = +25°C, VS = ±15V, and RL = 2kΩ, unless otherwise noted. LARGE-SIGNAL STEP RESPONSE G = 1, CL = 300pF 5V/div 50mV/div SMALL-SIGNAL STEP RESPONSE G =1, CL = 300pF 1µs/div 200ns/div SMALL-SIGNAL OVERSHOOT vs LOAD CAPACITANCE SETTLING TIME vs CLOSED-LOOP GAIN 50 100 Overshoot (%) 40 10 0.01% G = +2 G = –1 30 G = ±10 20 G=1 0 100pF 1 –1 RL = 2kΩ Higher RL value generally reduces overshoot. 10 0.1% –10 –100 –1000 1nF Load Capacitance Closed-Loop Gain (V/V) OUTPUT VOLTAGE SWING vs OUTPUT CURRENT 15 VIN = 15V 14 Output Voltage Swing (V) Settling Time (µs) VO = 10V Step RL = 2kΩ CL = 100pF 13 25°C –55°C 12 11 125°C 10 –10 25°C 125°C –11 –12 –55°C –13 –14 VIN = –15V –15 0 5 10 15 20 Output Current (mA) ® OPA131/2131/4131 6 25 30 10nF APPLICATIONS INFORMATION V+ OPA131 series op amps are unity-gain stable and suitable for a wide range of general-purpose applications. Power supply pins should be bypassed with 10nF ceramic capacitors or larger. OPA131 (Single op amp only) 7 2 6 3 OPA131 series op amps are free from unexpected output phase-reversal common with FET op amps. Many FETinput op amps exhibit phase-reversal of the output when the input common-mode voltage range is exceeded. This can occur in voltage-follower circuits, causing serious problems in control loop applications. All circuitry is completely independent in dual and quad versions, assuring normal behavior when one amplifier in a package is overdriven or short-circuited. OPA131 5 1 4 100kΩ Trim Range: ±20mV typ V– FIGURE 1. OPA131 Offset Voltage Trim Circuit. INPUT BIAS CURRENT The input bias current is approximately 5pA at room temperature and increases with temperature as shown in the typical performance curve “Input Bias Current vs Temperature.” OFFSET VOLTAGE TRIM The OPA131 (single op amp version) provides offset voltage trim connections on pins 1 and 5. Offset voltage can be adjusted by connecting a potentiometer as shown in Figure 1. This adjustment should be used only to null the offset of the op amp, not system offset or offset produced by the signal source. Input bias current also varies with common-mode voltage and power supply voltage. This variation is dependent on the voltage between the negative power supply and the common-mode input voltage. The effect is shown in the typical curve “Input Bias Current vs Common-Mode Voltage.” ® 7 OPA131/2131/4131