LT1112/LT1114 Dual/Quad Low Power Precision, Picoamp Input Op Amps FEATURES DESCRIPTIO The LT 1112 dual and LT1114 quad op amps achieve a Offset Voltage Prime Grade: 60V Max Offset Voltage Low Cost Grade new standard in combining low cost and outstanding precision specifications. (Including Surface Mount Dual/Quad): 75V Max Offset Voltage Drift: 0.5V/C Max The performance of the selected prime grades matches or Input Bias Current: 250pA Max exceeds competitive devices. In the design of the LT1112/ 0.1Hz to 10Hz Noise: 0.3V , 2.2pA P-P P-P LT1114 however, particular emphasis has been placed on Supply Current per Amplifier: 400A Max optimizing performance in the low cost plastic and SO CMRR: 120dB Min packages. For example, the 75V maximum offset voltage Voltage Gain: 1 Million Min in these low cost packages is the lowest on any dual or Guaranteed Specs with 1.0V Supplies quad non-chopper op amp. Guaranteed Matching Specifications The LT1112/LT1114 also provide a full set of matching SO-8 Package Standard Pinout specifications, facilitating their use in such matching LT1114 in Narrow Surface Mount Package dependent applications as two and three op amp instru- U mentation amplifiers. APPLICATIO S Another set of specifications is furnished at 1V supplies. Picoampere/Microvolt Instrumentation This, combined with the low 320A supply current per Two and Three Op Amp Instrumentation Amplifers amplifier, allows the LT1112/LT1114 to be powered by Thermocouple and Bridge Amplifiers two nearly discharged AA cells. Low Frequency Active Filters , LT, LTC and LTM are registered trademarks of Linear Technology Corporation. Photo Current Amplifiers Protected by U.S. Patents 4,575,685 4,775,884 and 4,837,496 Battery-Powered Systems TYPICAL APPLICATIO Distribution of Input Offset Voltage Dual Output, Buffered Reference (On Single 3V Supply) (In All Packages) 30 3V TOTAL SUPPLY CURRENT = 700A V = 15V S 2V REFERENCE: SOURCES 1.7mA, SINKS 5mA T = 25C A R 15k X OPTIONAL R = 300 INCREASES SOURCE X 25 CURRENT TO 5mA 0.765V REFERENCE: SOURCES 5mA, 20 SINKS 0.5mA 2 8 TEMPERATURE COEFFICIENT LIMITED 1 BY REFERENCE = 20ppm/C 15 1/2 LT1112 2.000V MINIMUM SUPPLY = 2.7V 3 + 75k 10 LT1004-1.2 0.1% 5 6 0 7 1/2 LT1112 0.765V 10 50 70 70 50 30 10 30 5 + INPUT OFFSET VOLTAGE (V) 4 LT1112/14 TA02 46.4k 0.1% LT1112/14 TA01 111214fb 1 PERCENT OF UNITS U ULT1112/LT1114 (Note 1) ABSOLUTE AXI U RATI GS Specified Temperature Range (Note 12) Supply Voltage ..................................................... 20V LT1112AM/LT1112M Differential Input Current (Note 2) ..................... 10mA LT1114AM/LT1114M (OBSOLETE)... 55C to 125C Input Voltage (Equal to Supply Voltage) ............... 20V LT1112AC/LT1112C/LT1112S8 Output Short-Circuit Duration ......................... Indefinite LT1114AC/LT1114C/LT1114S .......... 40C to 85C Storage Temperature Range ................ 65C to 150C LT1112I/LT1114I .............................. 40C to 85C Lead Temperature (Soldering, 10 sec)................ 300C LT1112MPS8 ................................... 55C to 125C Operating Temperature Range (Note 11) LT1112AM/LT1112M LT1114AM/LT1114M (OBSOLETE)... 55C to 125C LT1112AC/LT1112C/LT1112S8 LT1114AC/LT1114C/LT1114S .......... 40C to 85C LT1112I/LT1114I .............................. 40C to 85C LT1112MPS8 ................................... 55C to 125C UUW PACKAGE/ORDER I FOR ATIO TOP VIEW ORDER PART ORDER PART + OUT A 1 8 V NUMBER NUMBER TOP VIEW IN A 2 7 OUT B A + LT1112S8 1 8 LT1112ACN8 OUT A V +IN A 3 6 IN B B LT1112IS8 LT1112CN8 IN A 2 7 OUT B V 4 5 +IN B A LT1112MPS8 LT1112IN8 +IN A 3 6 IN B N8 PACKAGE B 8-LEAD PDIP V 4 5 +IN B S8 PART MARKING T = 150C, = 130C/W JMAX JA S8 PACKAGE 8-LEAD PLASTIC SO J8 PACKAGE 8-LEAD CERDIP 1112 LT1112AMJ8 T = 160C, = 100C/W JMAX JA T = 150C, = 190C/W JMAX JA 1112I LT1112MJ8 1112MP OBSOLETE PACKAGE Consider the N8 Package for Alternate Source TOP VIEW ORDER PART ORDER PART TOP VIEW NUMBER OUT A 1 14 OUT D NUMBER IN A 2 13 IN D OUT A 1 16 OUT D A D LT1114S LT1114ACN +IN A 3 12 +IN D IN A 2 15 IN D A D LT1114IS + LT1114CN V 4 11 V +IN A 3 14 +IN D + LT1114IN +IN B 5 10 +IN C V 4 13 V B C IN B 6 9 IN C +IN B 5 12 +IN C B C OUT B 7 8 OUT C IN B 6 11 IN C OUT B 7 10 OUT C N PACKAGE 14-LEAD PDIP NC 8 9 NC T = 150C, = 110C/W JMAX JA S PACKAGE J PACKAGE 14-LEAD CERDIP 16-LEAD PLASTIC SO (NARROW) LT1114AMJ T = 160C, = 80C/W (J) JMAX JA T = 150C, = 150C/W JMAX JA LT1114MJ OBSOLETE PACKAGE Consider the N Package for Alternate Source Consult LTC Marketing for parts specified with wider operating temperature ranges. 111214fb 2 U WWW