TI INA381A4QDGSRQ1

The device operates from a single 2.7V to 5.5V supply and draws a maximum supply current of 350μA. It features an operating temperature range of –40°C to +125°C and is available in a 10-pin VSSOP package. The INA381-Q1 is a zero-drift topology current-sense amplifier with an integrated comparator, suitable for low-side and high-side current sensing and protection applications. This purpose-built current-sense amplifier accurately measures the voltage developed across a current-sensing resistor (also known as a current-shunt resistor) at common-mode voltages far exceeding the device supply voltage. Current can be measured on input voltage rails up to 26V, while the device can be powered from supply voltages as low as 2.7V. When the supply voltage is removed, the device can also withstand a 26V common-mode voltage on the input pins without damage.

• Automotive-qualified
• AEC-Q100 qualified with the following characteristics: Device temperature grade 1: –40°C to +125°C ambient operating temperature range
• Documentation to support functional safety system design
• Common-mode input range: –0.2V to +26V
• High-accuracy amplifier:
  • Offset voltage at TA = 25°C:
    • 500μV (maximum) at VCM = 12V
    • 150μV (maximum) at VCM = 0V
  • Offset voltage drift: 1μV/°C (maximum)
  • Gain error: 1% (maximum) at 25°C
  • Gain error drift: 20ppm/°C (maximum)
• Available amplifier gains:
  • INA381A1-Q1: 20V/V
  • INA381A2-Q1: 50V/V
  • INA381A3-Q1: 100V/V
  • INA381A4-Q1: 200V/V
• Open-drain comparator:
  • Hysteresis: 50mV
  • Propagation delay: 400ns (typical)
  • Alert threshold set via external reference voltage
  • Transparent and latched modes supported
• Package: VSSOP-10

• ADAS domain controller
• Body Control Module (BCM)
• Window module
• Sunroof motor module
• Seat position and folding module
• Interior heater module
• Telematics control unit
• Digital cockpit processing unit
• Automotive head unit