LT1008 Picoamp Input Current, Microvolt Offset, Low Noise Op Amp FEATURES DESCRIPTIO Guaranteed Bias Current The LT 1008 is a universal precision operational amplifier T = 25C: 100pA Max that can be used in practically all precision applications. A T = 55C to 125C: 600pA Max The LT1008 combines for the first time, picoampere bias A Guaranteed Offset Voltage: 120V Max currents (which are maintained over the full 55C to Guaranteed Drift: 1.5V/C Max 125C temperature range), microvolt offset voltage (and Low Noise, 0.1Hz to 10Hz: 0.5V low drift with time and temperature), low voltage and P-P Guaranteed Low Supply Current: 600A Max current noise, and low power dissipation. Extremely high Guaranteed CMRR: 114dB Min common mode and power supply rejection ratios, and the Guaranteed PSRR: 114dB Min ability to deliver 5mA load current with high voltage gain Guaranteed Voltage Gain with 5mA Load Current round out the LT1008s superb precision specifications. Available in 8-Lead PDIP and SO Packages The all around excellence of the LT1008 eliminates the necessity of the time consuming error analysis procedure U of precision system design in many applications the APPLICATIO S LT1008 can be stocked as the universal precision op amp. Precision Instrumentation The LT1008 is externally compensated with a single ca- Charge Integrators pacitor for additional flexibility in shaping the frequency Wide Dynamic Range Logarithmic Amplifiers response of the amplifier. It plugs into and upgrades all Light Meters standard LM108A/LM308A applications. For an internally Low Frequency Active Filters compensated version with even lower offset voltage but Standard Cell Buffers otherwise similar performance see the LT1012. Thermocouple Amplifiers , LT, LTC and LTM are registered trademarks of Linear Technology Corporation. TYPICAL APPLICATIO Input Amplifier for 4.5 Digit Voltmeter Input Bias Current vs Temperature 100 1000pF 50 1 15V UNDERCANCELLED UNIT 2 8 0.1V INPUT 7 1V 0.1V 6 0 100k LT1008 OVERCANCELLED UNIT 1V 5% 3 + 10V 9k* 4 100V 50 9M 15V 1000V TO 1V FULL-SCALE 10V 1k* ANALOG-TO-DIGITAL 100 CONVERTER 900k 100V *RATIO MATCH 0.01% 150 90k 50 25 0 25 50 75 100 125 1000V TEMPERATURE (C) THIS APPLICATION REQUIRES LOW 10k FN507 BIAS CURRENT AND OFFSET VOLTAGE, 1008 TA02 ALLEN BRADLEY LOW NOISE AND LOW DRIFT WITH DECADE VOLTAGE DIVIDER TIME AND TEMPERATURE 1008 TA01 1008fb 1 INPUT BIAS CURRENT (pA) U ULT1008 ABSOLUTE AXI U RATI GS (Note 1) Supply Voltage ...................................................... 20V Operating Temperature Range Differential Input Current (Note 2) ..................... 10mA LT1008M (OBSOLETE) ............... 55C to 125C Input Voltage ........................................................ 20V LT1008C ................................................. 0C to 70C Output Short-Circuit Duration ......................... Indefinite LT1008I ............................................. 40C to 85C Storage Temperature Range ................. 65C to 150C Lead Temperature (Soldering, 10 sec).................. 300C UUW PACKAGE/ORDER I FOR ATIO TOP VIEW TOP VIEW COMP2 TOP VIEW COMP1 1 8 COMP2 8 + COMP1 1 8 COMP2 7 V + COMP1 1 IN 2 7 V + IN 2 7 V +IN 3 OUT 6 IN 2 6 OUT + +IN 3 6 OUT V 4 5 NC +IN 3 5 NC V 4 5 NC 4 N8 PACKAGE V (CASE) 8-LEAD PDIP S8 PACKAGE T = 150C, = 130C/W 8-LEAD PLASTIC SO H PACKAGE JMAX JA 8-LEAD TO-5 METAL CAN T = 150C, = 190C/W JMAX JA J8 PACKAGE 8-LEAD CERDIP T = 150C, = 150C/W, = 45C/W JMAX JA JC T = 150C, = 100C/W JMAX JA ORDER PART ORDER PART ORDER PART ORDER PART S8 PART NUMBER NUMBER NUMBER NUMBER MARKING LT1008MH LT1008MJ8 LT1008CN8 LT1008S8 1008 LT1008CH LT1008CJ8 LT1008IN8 Order Options Tape and Reel: Add TR OBSOLETE PACKAGES Lead Free: Add PBF Lead Free Tape and Reel: Add TRPBF Consider N8 or S8 Package for Alternate Source Lead Free Part Marking: