155 156 157 Monolithic JFET Input Operational Amplifiers GENERAL DESCRIPTION The LF155A, 156A and 157A family is composed of JFET input operational amplifiers which by using advanced pro- DESIGN FEATURES Low input offset voltage 1 mV cessing techniques, contain both bipolar transistors and @ Low input offset current 3 pA closely matched JFETs on the same chip. The resulting amp- @ Low input bias current 30 pA lifiers feature low input offset voltage and offset voltage . . drift, low input bias and offset current, and low noise, These @ Low input noise voltage 12 nVA/Hz 186A,157A devices also feature wide bandwidth, high stew rate and fast 20 nVA/ Hz 1554 settling time making them extremely versatile in such appli- , ; cations as A/D and D/A conversion, sample and hold cir- @ Low input noise current ~ 0.01 pAA/ Hz cuits; analog function circuits, active filters and instru- @ High DC voltage gain 200,000 V/V mentation circuits. SCHEMATIC DIAGRAM a a BALANCE ng ish 1, . q a 7 wm OT xe ey & x ovr wo po oF a t- Ly ey na a cE ir) ia Ly, 1 E Wor ae a as . 1 me sn ae 1k os * 04 cy Ey on C12 9F we LENS ow CONNECTION INFORMATION CQ Flat Package T (10.99) {Top View) Metal Can Package {Top View) NC 10 [7] nc BAL PJ Ne @ oO -IN [qj v* a> | +IN OUTPUT @ ve Sn Note 4: Pin 4 connected to case, Order Part Nos Order Part Nos.: LFISSAF, LFISSF, LFIB6AF, LFIS6F, LFIS7AF, LF1S7F LE1S5AH, LE355AH, LE1S6AH, LESS6AH, LE157AH, LF357AH. LFE155H, LEZ55H, LESS5H, LF 156H, LE256H, LF356H, LF157H, LF257H, LF357H DE and NB Dual In-line Packages (Top View) 2 z FUNCTION COMP/BAL INPUT +INPUT ve BAL OUTPUT vt comP ONO wn a Order Part Nos.: LFIS5ADE, LFS55ADE, LF1S6ADE, LE3S6ADE, LF157ADE, LF3S7ADE, LFIS5DE, LF255DE, LF355DE, LFIBEDE, LF286DE, LF356DE, LF157DE, LF257DE, LF357DE, LF355AN, LF356AN, LF357AN, LF355N, LF356N, LF357NMonolithic JFET Input Operational Amplifiers 155 156 157 ABSOLUTE MAXIMUM RATINGS LFISSA/GA/7A | LF355A/6A/7A LF155/6/7 - LF255/6/7 LF355/6/7 Supply Voltage +22V +22V +22V +22V +18V Power Dissipation (Note 1) 670 mw 500 mw 670 mW 570 mW 500 mW TO-99 (H package) Operating Temperature Range -55 to+125C | Ota +70C -66 to +125C | -25 to +85C 0 to +70C Ti(maX) 180C 100C 160C 110C 100C Differential input Vaitage +40V 240V +40V +40V +30V \nput Voltage Range (Note 2) +20V +20V +20V +20V +16V Output Short Circuit Duration Continuous Continuous Continuous Continuous Continuous Storage Temperature Range 851d +150C | -65 to +150C | -65to+150C | -B5to+150C | -65t0 +150C Lead Temperature (Soldering, 300C 300C 300C 300C 300C 10 seconds} Note: LF157A, 357A, 157, 257, 357 are decompensated for use in circuits with Ay > 5 only. DC ELECTRICAL CHARACTERISTICS Vcc #15V Ta +25C unless otherwise specified LFIS5A/156A/157A LF355A/356A/357A PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS Input Offset Voltage Rs < 10 KQ 1,0 2.0 1.0 2.0 mV Input Offset Current 3 10 3 10 pA Input Bias Current 30 50 30 50 pA Input Resistance 108 10 MQ Large Signal Voltage Gain Ri > 2 KQVoyTs10V 50K 200K 50K 200K viV The follawing specifications apply for -55C < Ta < +125C for LFISSA/1S6A/157A; OC < Ta < +70C for LFSSSA/356A/357A, lnput Offset Voltage Rs < 10 KQ 2.5 23 mV Input Offset Current 10 1.0 nA Input Bias Current 25 5 nA Large Signal Voltage Gain RL = 2KQVoyT+10V 25K 25K VV Gutput Voltage Swing RL > KD +12 213 12 #13 Vv Average Offset Voltage Drift 3 5 3 5 BEC Common Mode Rejection Ratio Rs < 10 KQ AV 25V 85 100 85 100 dB Power Supply Rejection Ratio Rs < 10 KQ AV +5V 85 100 85 100 dB Input Voltage Range +11 +15.1 +11 +15.1 Vv -12 -12 AC ELECTRICAL CHARACTERISTICS Vcc #15V Ta +25C unless otherwise specified LF1S5A/355A LF156A/356A LF157A/357A PARAMETER CONDITIONS MIN | TYP | MAX | MIN | TYP | MAX | MIN | TYP |; MAX UNITS Gain Bandwidth Product 2.5 4.0 | 4.5 15 { 20 MHz Settling Time To 0.07% 4 1.5 1.5 MS Slew Rate LFIS5A/156A: Ay = 1 LFIS7A: Ay =5 3} 5 10 12 40 50 Vius Input Capacitance 3 3 3 pF Input Noise Current F = 100 Hz 0.01 0.01 0.01 pA/y/ Hz F=1kHz 0.01 0.01 0.01 pA/,/ Hz input Noise Voltage F= 100 Hz 25 16 15 nv/./Hz (Rg = 1009) F=1kHz 20 12 12 nv/s/Hz | 125