INA826 Supply Instrumentation Amplifier

By Texas Instruments 227

INA826 Supply Instrumentation Amplifier

Texas Instruments' INA826 is a low-cost instrumentation amplifier that offers extremely low power consumption and operates over a very wide single or dual supply range. A single external resistor sets any gain from 1 to 1000. It offers excellent stability over temperature, even at G>1, as a result of the low gain drift of only 35 ppm/°C (max). 

The INA826 is optimized to provide excellent common-mode rejection ratio of over 100 dB (G=10) over frequencies up to 5 kHz. In G=1, the common-mode rejection ratio exceeds 84 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 INA826 is well-suited for low voltage operation from a 2.7 V single supply as well as dual supplies up to ±18 V.

  • Input Common-Mode Range: Includes V–
  • Common-Mode Rejection:
    • 104 dB, min (G = 10)
    • 100 dB, min at 5 kHz (G = 10)
  • Power-supply rejection: 100 dB, min (G=1)
  • Low offset voltage: 150 µV, max
  • Gain drift: 1 ppm/°C (G=1), 35 ppm/°C (G>1)
  • Industrial process controls
  • Circuit breakers
  • Battery testers
  • ECG amplifiers
  • Power automation
  • Medical instrumentation
  • Portable instrumentation

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