The INA21x are voltage-output, current-shunt monitors (also called current-sense amplifiers) that are commonly used for overcurrent protection, precision-current measurement for system optimization, or in closed-loop feedback circuits. This series of devices can sense drops across shunts at common-mode voltages from –0.3 V to 26 V, independent of the supply voltage. Six fixed gains are available: 50 V/V, 75 V/V, 100 V/V, 200 V/V, 500 V/V, or 1000 V/V. 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 devices operate from a single 2.7-V to 26-V power supply, drawing a maximum of 100 μA of supply current. All versions are specified over the extended operating temperature range (–40°C to +125°C), and offered in SC70 and UQFN packages.
Feature
- Wide Common-Mode Range: –0.3 V to 26 V
- Offset Voltage: ±35 μV (Maximum, INA210)(Enables Shunt Drops of 10-mV Full-Scale)
- Accuracy:
- Gain Error (Maximum Over Temperature):
- ±0.5% (Version C)
- ±1% (Versions A and B)
- 0.5-μV/°C Offset Drift (Maximum)
- 10-ppm/°C Gain Drift (Maximum)
- Gain Error (Maximum Over Temperature):
- Choice of Gains:
- INA210: 200 V/V
- INA211: 500 V/V
- INA212: 1000 V/V
- INA213: 50 V/V
- INA214: 100 V/V
- INA215: 75 V/V
- Quiescent Current: 100 μA (Maximum)
- SC70 and Thin UQFN Packages: All Models
