Manufacturer: Texas Instruments
Key Specifications
- Package: VSSOP-10
- Core: To be verified
- Memory: To be verified
- Interface: I2C
- Voltage: 0V to 36V (bus)
- Temperature: -40°C to 125°C
- Gain Error: 0.02%
- Supply Voltage: 2.7V to 5.5V
The INA226AIDGSR from Texas Instruments is a digital current shunt monitor that measures current and voltage with high accuracy. It operates over a common-mode voltage range of 0V to 36V, making it suitable for both high-side and low-side sensing applications. The device integrates a 16-bit delta-sigma ADC and provides a programmable calibration and conversion time, allowing flexible configuration for various measurement needs.
Key Features
- High accuracy: gain error of 0.02% (max) and offset voltage of 10 µV (max) ensure precise current measurement.
- I2C interface with 16 programmable addresses for multiple-device configurations.
- Measures bus voltage and shunt voltage simultaneously, enabling power calculation.
- Wide supply voltage range: 2.7V to 5.5V.
- Operating temperature range: -40°C to 125°C.
- Small 10-pin VSSOP package for space-constrained designs.
Applications
- Server and telecom power management
- Battery monitoring and charging systems
- Power supply and DC-DC converter monitoring
- Industrial and automotive load monitoring
Selection Notes
When selecting the INA226AIDGSR, consider the shunt resistor value and the desired current range to optimize measurement resolution. The device's I2C address can be configured via the A0 and A1 pins. For detailed specifications and design guidance, refer to the official datasheet.
