INA270 - 80V, Low-/High-side, High-Speed, Voltage Output Current Sense Amplifier

The INA270 andINA271 family of voltage-output, current-sense amplifiers can sense drops across shunt resistors atcommon-mode voltages from –16 V to +80 V, independent of the supply voltage. The INA270 and INA271pinouts readily enable filtering.

The INA270 and INA271 are available with two gain options: 14 V/V and 20 V/V. The 130-kHzbandwidth simplifies use in current-control loops.

The INA270 and INA271 operate from a single +2.7-V to +18-V supply, drawing 700 µA(typical) of supply current. The devices are specified over the extended operating temperaturerange of –40°C to +125°C and are offered in an SOIC-8 package.

• Wide Common-Mode Range: –16 V to +80 V
• CMRR: 120 dB
• Accuracy:
  ±0.5-mV Offset (typ)
  ±0.2% Gain Error (typ)
  2.5 µV/°C Offset Drift (typ)
  50 ppm/°C Gain Drift (max)
• Bandwidth: Up to 130 kHz
• Two Gain Options Available:
  14 V/V (INA270)
  20 V/V (INA271)
• Quiescent Current: 700 µA (typ)
• Power Supply: +2.7 V to +18 V
• Provision for Filtering

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