描述 The INA128-HT and INA129-HT are low-power, general-purpose instrumentation amplifiers offering excellent accuracy. The versatile three-operational-amplifier design and small size make them ideal for a wide range of applications. Current-feedback input circuitry provides wide bandwidth even at high gain. A single external resistor sets any gain from 1 to 10000. The INA128-HT provides an industry-standard gain equation; the INA129-HT gain equation is compatible with the AD620. The INA128-HT and INA129-HT are laser trimmed for very low offset voltage (25 µV Typ) and high common-mode rejection (93 dB at G ≥ 100). These devices operate with power supplies as low as ±2.25 V, and quiescent current of 2 mA, typically. Internal input protection can withstand up to ±40 V without damage. Texas Instruments' high-temperature products use highly optimized silicon (die) solutions with design and process enhancements to maximize performance over extended temperatures. The INA129-HT is available in 8-pin ceramic DIP and 8-pin ceramic surface-mount packages, specified for the –55°C to 210°C temperature range. The INA128-HT is available in an 8-pin SOIC-8 surface-mount package, specified for the –55°C to 175°C temperature range.特性Low Offset Voltage: 25 uV Typical Low Input Bias Current: 50 nA Typical(1) High CMR: 95 dB Typical(1) Inputs Protected to ±40 V Wide Supply Range: ±2.25 V to ±18 V Low Quiescent Current: 2 mA Typical(1)APPLICATIONSBridge Amplifiers Thermocouple Amplifiers RTD Sensor Amplifiers Medical Instrumentation Data Acquisition Supports Extreme Temperature Applications: Controlled Baseline One Assembly/Test Site One Fabrication Site Available in Extreme Temperature Ranges (–55°C to 210°C)(2) Extended Product Life Cycle Extended Product-Change Notification Product Traceability(1) Typical values for 210°C application. (2) Custom temperature ranges available. All other trademarks are the property of their respective owners