Overview
The INA226AIDGSR, produced by Texas Instruments, is a highly precise current shunt and power monitor designed with an I2C™- or SMBUS-compatible interface. This device is capable of monitoring both shunt voltage drops and bus supply voltages, providing accurate readings of current, voltage, and power. It operates over a wide range of common-mode bus voltages from 0V to 36V, independent of the supply voltage, which can range from 2.7V to 5.5V. The INA226AIDGSR is known for its high accuracy, with a gain error of 0.1% (maximum) and an offset of 10µV (maximum), making it suitable for precise and reliable monitoring in various applications.
Key Specifications
| Parameter | Minimum | Typical | Maximum | Unit |
|---|---|---|---|---|
| Shunt Voltage Input Range | -81.92 | - | 81.92 | mV |
| Bus Voltage Input Range | 0 | - | 36 | V |
| Operating Supply Range | 2.7 | - | 5.5 | V |
| Quiescent Current | 330 | - | 420 | µA |
| Operating Temperature Range | -40 | - | 125 | °C |
| Gain Error | - | - | 0.1% | - |
| Offset Voltage | - | - | 10µV | - |
| Package Type | - | - | 10-pin DGS (VSSOP) | - |
| Programmable Addresses | - | - | 16 | - |
Key Features
- Senses bus voltages from 0V to 36V
- High-side or low-side sensing capability
- Reports current, voltage, and power with high accuracy
- Gain error: 0.1% (maximum), Offset: 10µV (maximum)
- Configurable averaging options
- 16 programmable addresses on the I2C-compatible interface
- Operates from a single 2.7V to 5.5V power supply
- 10-pin DGS (VSSOP) package
- Programmable calibration value, conversion times, and averaging
- Internal multiplier for direct readouts of current in amperes and power in watts
Applications
- Rack servers
- Wireless infrastructure
- High performance computing
- Power management systems
- Battery cell monitors and balancers
- Power supplies
- Test equipment
Q & A
- What is the operating voltage range of the INA226AIDGSR?
The INA226AIDGSR operates from a single 2.7V to 5.5V power supply.
- What is the range of bus voltages that the INA226AIDGSR can sense?
The device can sense bus voltages from 0V to 36V.
- What is the accuracy of the INA226AIDGSR in terms of gain error and offset voltage?
The gain error is 0.1% (maximum), and the offset voltage is 10µV (maximum).
- Does the INA226AIDGSR support high-side or low-side sensing?
Yes, the INA226AIDGSR supports both high-side and low-side sensing.
- How many programmable addresses does the INA226AIDGSR have?
The device has up to 16 programmable addresses on the I2C-compatible interface.
- What is the typical quiescent current of the INA226AIDGSR?
The typical quiescent current is 330µA.
- What is the operating temperature range of the INA226AIDGSR?
The device operates over a temperature range of –40°C to 125°C.
- What type of package does the INA226AIDGSR come in?
The device comes in a 10-pin DGS (VSSOP) package.
- Can the INA226AIDGSR measure current, voltage, and power directly?
Yes, the device can measure current, voltage, and power directly using its internal multiplier and programmable calibration value.
- What are some common applications of the INA226AIDGSR?
Common applications include rack servers, wireless infrastructure, high performance computing, power management systems, battery cell monitors and balancers, power supplies, and test equipment.
