Dual operational amplifier

Transcription

1 DESCRIPTION The 77 is a pair of high-performance monolithic operational amplifiers constructed on a single silicon chip. High common-mode voltage range and absence of latch-up make the 77 ideal for use as a voltage-follower. The high gain and wide range of operating voltage provides superior performance in integrator, summing amplifier, and general feedback applications. The 77 is short-circuit protected and requires no external components for frequency compensation. The internal 6dB/octave roll-off insures stability in closed-loop applications. For single amplifier performance, see µa71 data sheet. FEATURES No frequency compensation required Short-circuit protection Offset voltage null capability Large common-mode and differential voltage ranges Low power consumption No latch-up PIN CONFIGURATION N Package INV. INPUT A 1 A NONINVERTING INPUT A OFFSET NULL A 3 V OFFSET NULL B 5 NONINVERTING INPUT B 6 9 B INVERTING INPUT B 7 TOP VIEW OFFSET NULL A V A OUTPUT A NO CONNECT OUTPUT B V B OFFSET NULL B ORDERING INFORMATION DESCRIPTION TEMPERATURE RANGE ORDER CODE DWG # 1-Pin Plastic DIP C to 7 C N 5B EQUIVALENT SCHEMATIC INVERTING INPUT V Q Q9 Q Q13 NONINVERTING INPUT Q1 Q3 Q Q R5 39KΩ 3pF R7.5Ω R 7.5KΩ Q1 Q15 Q1 R9 5Ω Q OUTPUT Q7 Q17 OFFSET NULL Q5 Q6 Q1 Q11 Q R1 5Ω Q R1 1KΩ R3 5KΩ R 1KΩ R 5kΩ R 5kΩ R11 5Ω V OFFSET NULL August 31,

2 ABSOLUTE MAXIMUM RATINGS SYMBOL PARAMETER RATING UNIT V S Supply voltage ±1 V P D MAX Maximum power dissipation T A =5 C (still air) 1 15 mw V IN Differential input voltage ±3 V V IN Input voltage ±15 V Voltage between offset null and V- ±.5 V T STG Storage temperature range -65 to 15 C T A Operating temperature range to 7 C T SOLD Lead temperature (soldering, 1sec) 3 C I SC Output short-circuit duration Indefinite NOTES: 1. Derate above 5 C at the following rates: N package at mw/ C. For supply voltages less than ±15V, the absolute maximum input voltage is equal to the supply voltage. DC ELECTRICAL CHARACTERISTICS T A =5 C, V CC = ±15V unless otherwise specified. SYMBOL PARAMETER TEST CONDITIONS Min Typ Max V OS Offset voltage R S 1kΩ. 6. mv UNIT R S 1kΩ, over temp mv V OS / T 1 µv/ C I OS Offset current na Over temperature 7. 3 na I OS / T pa/ C I BIAS Input current 5 na Over temperature 3 na I B / T 1 na/ C V OUT Output voltage swing R L kω, over temp. R L 1kΩ, over temp. I CC Supply current each side 1.7. ma ±1 ± ±13 ±1 Over temperature. 3.3 ma P d Power consumption 5 5 mw Over temperature 6 1 mw C IN Input capacitance 1. pf Offset voltage adjustment range ±15 mv R OUT Output resistance 75 Ω Channel separation db PSRR Supply voltage rejection ratio R S 1kΩ, over temp µv/v A VOL CMRR Large-signal voltage gain (DC) Common-mode rejection ratio R L kω, V OUT =±1V Over temperature R S 1kΩ, V CM =±V Over temperature 5, 15, V V V/V V/V 7 db August 31,

3 AC ELECTRICAL CHARACTERISTICS T A =5 C, V S = ±15V unless otherwise specified. SYMBOL PARAMETER TEST CONDITIONS Transient response V IN =mv, R L =kω, C L <1pF Min Typ Max t R Rise time Unity gain C L 1pF.3 µs Overshoot Unity gain C L 1pF 5. % SR Slew rate R L >kω.5 V/µs UNIT TYPICAL PERFORMANCE CHARACTERISTICS VOLTAGE GAIN OpenLooped Voltage Gain K 1K 1K 1M 1M PHASE DEGREES OpenLooped Voltage Response K 1K 1K 1M 1M PEAKTOPEAK OUTPUT SWING V 36 3 Output Voltage Swing R L = 1kΩ 1 1k 1k 1k 1M VOLTAGE GAIN db OpenLoop Voltage Gain as a T A = 5O C 15 PEAK TO PEAK OUTPUT SWING V 36 3 Output Voltage Swing as a 55 o C < T A < 5o C R L > kω COMMON MODE VOLTAGE RANGE V Input CommonMode Voltage Range as a Function of Supply voltage o C < T A < 5o C OUTPUT mv Transient Response 1% RISE TIME R L = kω C L = 1pF OUTPUT VOLTAGE V Voltage-follower Large-Signal Pulse Response OUTPUT INPUT RELATIVE VALUE Frequency Characteristics as a TRANSIENT RESPONSE SLEW RATE CLOSED LOOP BANDWIDTH TIME µs TIME µs August 31,

4 TYPICAL PERFORMANCE CHARACTERISTICS (Continued) RELATIVE VALUE Frequency Characteristics as a Function TRANSIENT RESPONSE CLOSED LOOP BANDWIDTH SLEW RATE POWER CONSUMPTION mw 1 6 Power Consumption as a T A T A = 5o = 5o C C INPUT BIAS CURRENT na Input Bias Current as a Function V S = 15V Input Resistance as a Function Input Offset Current as a 1 Input Offset Current as a Function INPUT RESISTANCE MΩ INPUT OFFSET CURRENT na 3 1 INPUT OFFSET CURRENT na POWER CONSUMPTION mw Power Consumption as a Function PEAKTOPEAK OUTPUT SWING V Output Voltage Swing as a Function of Load Resistance V S = 15V LOAD RESISTANCE kω SHORT CIRCUIT CURRENT ma Output ShortCircuit Current as a Function of Ambient Temperature August 31,

5 TYPICAL PERFORMANCE CHARACTERISTICS (Continued) MEAN SQUARE VOLTAGE V Hz Input Noise Voltage K 1K 1K MEAN MEAN SQUARE SQUARE NOISE VOLTAGE CURRENT V Hz Input Noise Current K 1K 1K TOTAL NOISE REFERRED TO INPUT µ Vrms Broadband Noise for Various Bandwidths 11kHz 11kHz 11kHz.1 1 1K 1K 1K SOURCE RESISTANCE Ω TEST CIRCUITS V OUT V IN C L R L Transient Response Test Circuit 1KΩ V Voltage Offset Null Circuit August 31, 199 5