Texas Instruments INA28x Bidirectional Current Shunt Monitors

Texas Instruments INA28x Bidirectional Current Shunt Monitors are voltage output current shunt monitors that can sense drops across shunts at common-mode voltages from -14V to +80V. This is done independent of the supply voltage. The low offset of the zero-drift architecture enables current sensing with maximum drops across the shunt as low as 10 mV full-scale. These current sense amplifiers operate from a single +2.7V to +18V supply. They draw a maximum of 900µA of supply current. Texas Instruments INA28x Bidirectional Current Shunt Monitors are specified over the extended operating temperature range of -40°C to +125°C. They are also offered in SOIC-8 and VSSOP-8 packages.

Features

-14V to +80V wide common-mode range
±20µV offset voltage
140dB CMRR
Accuracy
- ±1.4% gain error (max.)
- 0.3µV/°C offset drift
- 0.005%/°C gain drift (max.)

Available Gains
- 50V/V: INA282
- 100V/V: INA286
- 200V/V: INA283
- 500V/V: INA284
- 1000V/V: INA285
900µA (max.) quiescent current