INA827 Instrumentation Amplifier

By Texas Instruments 91

INA827 Instrumentation Amplifier

Texas Instruments' INA827 is a low-cost instrumentation amplifier (INA) that offers extremely low power consumption and operates over a very wide single- or dual-supply range. The device is optimized for the lowest possible gain drift of only 1 ppm per degree Celsius in G = 5, requiring no external resistor. However, a single external resistor sets any gain from 5 to 1000. 

The INA827 is optimized to provide excellent common-mode rejection ratio (CMRR) of over 88 dB (G = 5) over frequencies up to 5 kHz. In G = 5, CMRR exceeds 88 dB across the full input common-mode range from the negative supply all the way up to 1 V of the positive supply. Using a rail-to-rail output, the INA827 is well-suited for low-voltage operation from a 2.7 V single-supply, as well as dual supplies up to ±18 V.

Features Applications
  • Eliminates errors from external resistors at gain of 5
  • Common-mode range goes below negative supply
  • Input protection: Up to ±40 V
  • Rail-to-rail output
  • Outstanding precision
  • Industrial process controls
  • Multichannel systems
  • Power automation
  • Weigh scales
  • Medical instrumentation