INA190-Q1, 40V, BI-DIRECTIONAL, ULTRA-PRECISE CURRENT SENSE AMPLIFIER

The INA190-Q1 is an automotive, low-power, voltage-output, current-shunt monitor (also called a current-sense amplifier). This device is commonly used for monitoring systems directly connected to an automotive 12-V battery. The INA190-Q1 can sense drops across shunts at common-mode voltages from –0.2 V to +40 V, independent of the supply voltage. In addition, the input pins have an absolute maximum voltage of 42 V.

Features

  • Low Supply Voltage, VVS: 1.7V to 5.5V
  • Wide Common-Mode Voltage: –0.2V to +40V
  • Low Shutdown Current: 100nA (Max)
  • Low Input Bias Currents: 500pA (Typ) (Enables Microamp Current Measurement)
  • Low Offset Voltage, VOS: ±15 µV (Max)
  • Accuracy:
    • Gain Error: ±0.2% (A1 Devices)
    • Offset Drift: 0.13µV/°C (Max)
    • Gain Drift: 5ppm/°C (Max)
  • Gain Options:
    • INA190A1: 25V/V
    • INA190A2: 50 V/V
    • INA190A3: 100V/V
    • INA190A4: 200V/V
    • INA190A5: 500V/V
  • Quiescent Current: 50µA at 25°C (Typ)
  • Package: 1.8mm x 1.4mm UQFN-10

The low input bias current of the device permits the use of larger current-sense resistors, thus providing accurate current measurements in the microamp range. The low offset voltage of the zero-drift architecture extends the dynamic range of the current measurement. This feature allows for smaller sense resistors with lower power loss, while still providing accurate current measurements.

Read more: INA190-Q1, 40V, BI-DIRECTIONAL, ULTRA-PRECISE CURRENT SENSE AMPLIFIER

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