Texas Instruments INA21x/INA21x-Q1 Current-Shunt Monitors
Texas Instruments INA21x/INA21x-Q1 Bidirectional Zero-Drift Current-Shunt Monitors are voltage-output, current-shunt monitors that can sense drops across shunts at common-mode voltages from -0.3V to 26V. This is done independent of the supply voltage. These are available in five fixed gains. The low offset of the zero-drift architecture enables current sensing with maximum drops across the shunt as low as 10mV full-scale. These devices from Texas Instruments operate from a single 2.7V to 26V power supply. These devices draw a maximum of 100µA of supply current. All versions are specified over the extended operating temperature range of -40°C to +125°C. They are offered in an SC70 package or thin UQFN package. The INA21x-Q1 devices are AEC-Q100 qualified for automotive applications.
Features
- Accuracy
- ±1% gain error (max. over temperature)
- 0.5µV/°C offset drift (max.)
- 10ppm/°C gain drift (max.)
- Choice of Gains
- INA210: 200V/V
- INA211: 500V/V
- INA212: 1000V/V
- INA213: 50V/V
- INA214: 100V/V
- INA215: 75V/V
- -0.3V to 26V wide common-mode range
- ±35µV (max., INA210) offset voltage (enables shunt drops of 10mV full-scale)
- 100µA (max.) quiescent current
- SC70 package for all models
- Thin UQFN package: INA210, INA213, INA214
Applications
- Notebook computers
- Cell phones
- Telecom equipment
- Power management
- Battery chargers
- Welding equipment
Datasheets
Functional Block Diagram
Publicerad: 2015-05-28
| Uppdaterad: 2025-02-05