INA293-Q1

• AEC-Q100 qualified for automotive applications:
  • Temperature grade 1: –40°C to +125°C, T_A
• Wide common-mode voltage:
  • Operational voltage: −4 V to +110 V
  • Survival voltage: −20 V to +116 V
• Excellent CMRR
  • 160-dB dc CMRR
  • 85-dB ac CMRR at 50 kHz
• Accuracy
  • Gain
    • Gain error: 0.2% (maximum)
    • Gain drift: 10 ppm/°C (maximum)
  • Offset
    • Offset voltage: ±200 µV (maximum)
    • Offset drift: ±1 µV/°C (maximum)
• Available gains:
  • INA293A1-Q1, INA293B1-Q1: 20 V/V
  • INA293A2-Q1, INA293B2-Q1: 50 V/V
  • INA293A3-Q1, INA293B3-Q1: 100 V/V
  • INA293A4-Q1, INA293B4-Q1: 200 V/V
  • INA293A5-Q1, INA293B5-Q1: 500 V/V
• Bandwidth: 1 MHz
• Slew rate: 3 V/µs
• Quiescent current: 1.5 mA

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The INA293-Q1 is a versatile, automotive, high-voltage, unidirectional, voltage-output, current-sense amplifier that senses voltage drops across external sense (shunt) resistors over a wide common-mode voltage range from –4 V to 110 V. The negative common-mode voltage allows the device to operate below ground, thus accommodating the precise measurement of a recirculating current in typical
h-bridge applications. The INA293-Q1 amplifier has a bandwidth of 1 MHz at gain of 20 V/V. The 1-MHz bandwidth in combination with a low offset of < 200 uV (max) provides fast settling response with accurate measurements in a large common-mode switching transients.

The INA293-Q1 operates from a single 2.7-V to 20-V supply, drawing 1.5 mA of supply current. The INA293-Q1 is available with five gain options: 20 V/V, 50 V/V, 100 V/V, 200 V/V, and 500 V/V. These gain options address wide dynamic current-sensing applications.

The INA293-Q1 is specified over the operating temperature range of −40°C to +125°C, and is offered in a space-saving SOT-23 package.