Texas Instruments offers the INA188 precision, zero drift, rail-to-rail output, high voltage instrumentation amplifier

     The Texas Instruments INA188 is a precision instrument amplifier that uses TI's proprietary automatic zeroing technology. This allows for low bias voltage, near zero bias and gain drift, excellent linearity, and extremely low noise density (12 nV/√Hz), extending to DC.

     INA188 is optimized to provide common-mode suppression better than 104 dB (G≥10). Superior common-mode and power rejection support high resolution, accurate measurement applications. The multifunctional tri-op amp design offers rail-to-rail output, low voltage operation from 4v single power or dual power ±18v, and a wide, high-impedance input range. These specifications make the device ideal for general purpose signal measurement and sensor regulation such as temperature or bridge applications.

     The INA188 is suitable for temperature ranges from -40°C to 125°C, and an external resistor can be set for gains from 1 to 1000. INA188 is designed using the industry standard gain equation :G = 1 + (50 k ohm/R(G)). Reference pins can be used for level switching in single power operation or for bias calibration.