LT2178/LT2179 17A Max, Dual and Quad, Single Supply, Precision Op Amps FEATURES DESCRIPTION n SO Package with Standard Pinout The LT 2178 is a micropower dual op amp in a surface n Supply Current per Ampli er: 17A Max mount standard 8-pin con guration, the LT2179 is a n Offset Voltage: 70V Max micropower quad op amp offered in a surface mount n Offset Current: 250pA Max 14-pin package. Both devices are optimized for single n Input Bias Current: 5nA Max supply operation at 5V. Speci cations are also provided n Voltage Noise: 0.9V , 0.1Hz to 10Hz at 15V supply. P-P n Current Noise: 1.5pA , 0.1Hz to 10Hz P-P The extremely low supply current is combined with true n Offset Voltage Drift: 0.5V/C precision speci cations: offset voltage is 30V and offset n Gain Bandwidth Product: 85kHz current is 50pA. Both offset parameters have low drift with n Slew Rate: 0.04V/s temperature. The 1.5pA current noise and picoampere P-P n Single Supply Operation offset current permit the use the megohm level source Input Voltage Range Includes Ground resistors without introducing serious errors. Voltage Output Swings to Ground while Sinking Current noise, at 0.9V , is remarkably low considering the low P-P No Pull-Down Resistors Needed supply current. n Output Sources and Sinks 5mA Load Current The LT2178/LT2179 can be operated from a single supply (as low as one lithium-cell or two NiCd batteries). The input APPLICATIONS range goes below ground. The all-NPN output stage swings to within a few millivolts of ground while sinking current. n Battery- or Solar-Powered Systems No power consuming pull down resistors are needed. Portable Instrumentation Remote Sensor Ampli er For surface mount applications where three times higher Satellite Circuitry supply current is acceptable, the micropower LT1077 n Micropower Sample-and-Hold single, LT2078 dual and LT2079 quad are recommended. n Thermocouple Ampli er The LT1077/LT2078/LT2079 have signi cantly higher n Micropower Filters bandwidth, slew rate, lower voltage noise and better output L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear drive capability. For applications requiring DIP packages Technology Corporation. All other trademarks are the property of their respective owners. refer to the LT1178/LT1179. TYPICAL APPLICATION Self-Buffered, Dual Output, Micropower Reference Supply Current vs Temperature 20 TOTAL BATTERY CURRENT = 28mA OUTPUT ACCURACY = p 0.4% MAX 2 TEMPERATURE COEFFICIENT = 20ppm/C + 18 LOAD REGULATION = 25ppm/mA, I 5mA, V 5V L 1 1.2365V 1/2 LT2178 LINE REGULATION = 10ppm/V OUTPUT V = p 15V S 3 + * 0.1% FILM RESISTORS 4V TO 9V 16 4 + 5 8 2.470V 250k 7 14 V = 5V, 0V S 1/2 LT2178 OUTPUT 6 2M 0.1F 0.1F 12 V = p 1.5V S LT1004-1.2 1M* 1M* 10 21789 TA01 50 25 25 50 75 100 0 TEMPERATURE (C) 21789 TA02 21789fc 1 SUPPLY CURRENT PER AMPLIFIER A)LT2178/LT2179 ABSOLUTE MAXIMUM RATINGS Speci ed Temperature Range Supply Voltage ........................................................22V Commercial.............................................. 0C to 70C Differential Input Voltage.........................................30V Industrial ............................................. 40C to 85C Input Voltage ................ Equal to Positive Supply Voltage Storage Temperature Range ................... 65C to 150C .............................5V Below Negative Supply Voltage Lead Temperature (Soldering, 10 sec) .................. 300C Output Short-Circuit Duration .......................... Inde nite PIN CONFIGURATION TOP VIEW OUT A 1 14 OUT D TOP VIEW IN A 2 13 IN D + A D OUT A 1 8 V + +IN A 3 12 +IN D IN A OUT B 2 7 + A V 4 11 V + +IN A 3 6 IN B + B +IN B 5 10 +IN C B C V 4 5 +IN B IN B 6 9 IN C S8 PACKAGE OUT B 7 8 OUT C 8-LEAD PLASTIC SO S PACKAGE T = 150C, = 190C/W JMAX JA 14-LEAD PLASTIC SO T = 150C, = 150C/W JMAX JA ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE LT2178ACS8 PBF LT2178ACS8 TRPBF 2178A 8-Lead Plastic SO 0C to 70C LT2178AIS8 PBF LT2178AIS8 TRPBF 2178AI 8-Lead Plastic SO 40C to 85C LT2178CS8 PBF LT2178CS8 TRPBF 2178 8-Lead Plastic SO 0C to 70C LT2178IS8 PBF LT2178IS8 TRPBF 2178I 8-Lead Plastic SO 40C to 85C LT2179ACS PBF LT2179ACS TRPBF 2179A 14-Lead Plastic SO 0C to 70C LT2179CS PBF LT2179CS TRPBF 2179 14-Lead Plastic SO 0C to 70C LT2179IS PBF LT2179IS TRPBF 2179I 14-Lead Plastic SO 40C to 85C LEAD BASED FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE LT2178ACS8 LT2178ACS8 TR 2178A 8-Lead Plastic SO 0C to 70C LT2178AIS8 LT2178AIS8 TR 2178AI 8-Lead Plastic SO 40C to 85C LT2178CS8 LT2178CS8 TR 2178 8-Lead Plastic SO 0C to 70C LT2178IS8 LT2178IS8 TR 2178I 8-Lead Plastic SO 40C to 85C LT2179ACS LT2179ACS TR 2179A 14-Lead Plastic SO 0C to 70C LT2179CS LT2179CS TR 2179 14-Lead Plastic SO 0C to 70C LT2179IS LT2179IS TR 2179I 14-Lead Plastic SO 40C to 85C Consult LTC Marketing for parts speci ed with wider operating temperature ranges. 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