INA185

• SOT-563 package (1.6 mm × 1.6 mm)
  • 39% smaller footprint than SC70
  • 0.55 mm package height
• Common-mode range (V_CM): –0.2 V to +26 V
• High bandwidth: 350 kHz (A1 devices)
• Offset voltage:
  • ±55 µV (max) at V_CM = 0 V
  • ±100 µV (max) at V_CM = 12 V (A4 device)
• Output slew rate: 2 V/µs
• Bidirectional current-sensing capability
• Accuracy:
  • ±0.2% maximum gain error (A1, A2, A3)
  • 0.5-µV/°C maximum offset drift
• Gain options:
  • 20 V/V (A1 devices)
  • 50 V/V (A2 devices)
  • 100 V/V (A3 devices)
  • 200 V/V (A4 devices)
• Quiescent current: 260 µA (max)

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The INA185 current sense amplifier is designed for use in cost-sensitive space constrained applications. This device is a bidirectional, current-sense amplifier (also called a current-shunt monitor) that senses voltage drop across a current-sense resistor at common-mode voltages from –0.2 V to +26 V, independent of the supply voltage. The INA185 integrates a matched resistor gain network in four, fixed-gain device options: 20 V/V, 50 V/V, 100 V/V, or 200 V/V. This matched gain resistor network minimizes gain error and reduces the temperature drift.

The INA185 operates from a single 2.7-V to 5.5-V power supply. The device draws a maximum supply current of 260 µA and features high slew rate and bandwidth making this device an excellent choice for many power-supply and motor-control applications.

The INA185 is available in a low profile 6-pin, SOT-563 package, and has a body size of size of only 2.56 mm², including the device pins. All device options are specified over the extended operating temperature range of –40°C to +125°C.