INA823 Precision Instrumentation Amplifier Texas Instruments INA823 Precision Instrumentation Amplifiers offer low power consumption and operate over a wide, single-supply, or dual-supply range. A single external resistor sets any gain from 1 to 10,000. The device provides low input offset voltage, low offset voltage drift, low input bias current, and low current noise while remaining cost-effective. Additional circuitry protects the inputs against overvoltage up to ±60V.