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INA381 Description

The INA381 includes both a 26-V mon-mode, current-sensing amplifier and a high-speed parator. This device detects overcurrent conditions by measuring the voltage developed across a current-shunt resistor and paring that voltage to a user-defined threshold limit set by the parator reference pin. The current-shunt monitor can measure differential voltage signals on monmode voltages that vary from 0.2 V up to 26 V,...

INA381 Key Features

  • 1 mon-mode input range: -0.2 V to +26 V
  • High accuracy amplifier
  • Offset voltage at TA = 25°C
  • 500 µV (maximum) at VCM = 12 V
  • 150 µV (maximum) at VCM = 0 V
  • Offset voltage drift: 1 µV/°C (maximum)
  • Gain error: 1% (maximum) at 25°C
  • Gain error drift: 20 ppm/°C (maximum)
  • Available amplifier gains
  • INA381A1: 20 V/V