The INA270 and INA271 family of voltage-output, current-sense amplifiers can sense drops across shunt resistors at common-mode voltages from –16 V to +80 V, independent of the supply voltage. The INA270 and INA271 pinouts readily enable filtering.
The INA270 and INA271 are available with two gain options: 14 V/V and 20 V/V. The 130-kHz bandwidth 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 temperature range 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)