LT1179 17µA Max, Dual and Quad, Single Supply, Precision Op Amps

The LT™1178 is a micropower dual op amp in the standard 8-pin configuration; the LT1179 is a micropower quad op amp offered in the standard 14-pin packages. Both devices are optimized for single supply operation at 5V. Specifications are also provided at ±15V supplies.

The extremely low supply current is combined with true precision specifications: offset voltage is 30µV, offset currentis 50pA. Both offset parameters have low drift with temperature. The 1.5pAp-p current noise and picoampere offset current permit the use of megaohm level source resistors without introducing serious errors. Voltage noise, at 0.9µVp-p, is remarkably low considering the low supply current.

Both the LT1178 and LT1179 can be operated from a single supply (as low as one lithium cell or two NiCd batteries). The input range goes below ground. The all-NPN output stage swings to within a few millivolts of ground while sinking current�no power consuming pull down resistors are needed.

For applications where three times higher supply current is acceptable, the micropower LT1077 single, LT1078 dual and LT1079 quad are recommended. The LT1077/78/79 have significantly higher bandwidth, slew rate, lower voltage noise and better output drive capability

产品特点 Features
  • 17µA Max Supply Current per Amplifier
  • 70µV Max Offset Voltage
  • 250pA Max Offset Current
  • 5nA Max Input Bias Current
  • 0.9µVp-p 0.1Hz to 10Hz Voltage Noise
  • 1.5pAp-p 0.1Hz to 10Hz Current Noise
  • 0.5µV/°C Offset Voltage Drift
  • 85kHz Gain-Bandwidth-Product
  • 0.04V/µs Slew Rate
  • Single Supply Operation
  • Input Voltage Range Includes Ground
  • Output Swings to Ground while Sinking Current
  • No Pull Down Resistors are Needed
  • Output Sources and Sinks 5mA Load Current
参数
LT1179 参数
应用
  • Battery or Solar Powered Systems
  • Portable Instrumentation
  • Remote Sensor Amplifier
  • Satellite Circuitry
  • Micropower Sample and Hold
  • Thermocouple Amplifier
  • Micropower Filters
典型应用图
LT1179 典型应用
LT1179 订购信息和价格参考Package Variations and Pricing
器件型号 封装 引脚 温度 价格 (以 1 ~ 99 片为批量) 价格 (以 1000 片为批量) *
LT1179ACN PDIP 14 C $8.25  $6.70 
LT1179ACN#PBF PDIP 14 C $8.25  $6.70 
LT1179CN PDIP 14 C $4.58  $3.70 
LT1179CN#PBF PDIP 14 C $4.58  $3.70 
LT1179IN PDIP 14 I $5.67  $4.65 
LT1179IN#PBF PDIP 14 I $5.67  $4.65 
LT1179SW SO 16 C $5.83  $4.80 
LT1179SW#PBF SO 16 C $5.83  $4.80 
LT1179SW#TR SO 16 C $4.86 
LT1179SW#TRPBF SO 16 C $4.86 
LT1179 数据手册及相关资料下载
  1. 数据手册(英文) : LT1179 - 17µA Max, Dual and Quad, Single Supply, Precision Op Amps.PDF
  2. 应用指南 (英文) : AN42 - Voltage Reference Circuit Collection.PDF
  3. 应用指南 (英文) : AN48 - Using the LTC Op Amp Macromodels.PDF
  4. 应用指南 (英文) : AN59 - Applications of the LT1300 and LT1301 Micropower DC/DC Converters.PDF
  5. 设计要点 (英文) : DN23 - Micropower, Single Supply Applications: (1) A Self-Biased, Buffered Reference (2) Megaohm Input Impedance Difference Amplifier.PDF
  6. 设计要点 (英文) : DN38 - Applications for a New Micropower, Low Charge Injection Analog Switch.PDF
  7. 设计要点 (英文) : DN56 - 3V Operation of linear Technology Op Amps.PDF
  8. 可靠性数据 : R046 Reliability Data .PDF