Overview
The INA226AQDGSRQ1, produced by Texas Instruments, is a highly precise current shunt and power monitor designed for a wide range of applications. This device is AEC-Q100 qualified, ensuring its suitability for automotive and other demanding environments. It features an I2C™- or SMBUS-compatible interface, allowing for easy integration into various systems. The INA226AQDGSRQ1 monitors both shunt voltage drop and bus supply voltage, providing accurate readings of current, voltage, and power.
The device operates from a single 2.7V to 5.5V power supply and can sense bus voltages from 0V to 36V, independent of the supply voltage. It is specified over an operating temperature range of –40°C to 125°C, making it robust for diverse operational conditions.
Key Specifications
| Parameter | Specification |
|---|---|
| Device Type | Current Shunt and Power Monitor |
| Interface | I2C™- or SMBUS-compatible |
| Bus Voltage Range | 0V to 36V |
| Supply Voltage Range | 2.7V to 5.5V |
| Supply Current | Typical 330µA |
| Operating Temperature Range | –40°C to 125°C |
| Accuracy | Gain Error: 0.1% (maximum), Offset: 10µV (maximum) |
| Resolution | 16-bit |
| Package | 10-pin DGS (VSSOP) |
| Programmable Addresses | Up to 16 |
| AEC-Q100 Qualification | Device temperature grade 1, HBM ESD classification 2, CDM ESD classification C4B, Functional Safety-Capable |
Key Features
- High Accuracy: Gain error of 0.1% (maximum) and offset of 10µV (maximum).
- Configurable Averaging Options: Allows for flexible measurement settings.
- Programmable Calibration Value: Enables direct readouts of current in amperes and power in watts.
- Alert Functions: Includes shunt voltage over-limit, under-limit, bus voltage over-limit, and conversion ready notifications.
- Multiple Programmable Addresses: Up to 16 addresses available for I2C-compatible interface.
- Functional Safety-Capable: Meets stringent safety requirements.
Applications
- Automotive Systems: Suitable for various automotive applications due to AEC-Q100 qualification.
- Industrial Power Monitoring: Ideal for monitoring current, voltage, and power in industrial systems.
- Server and Data Center Power Management: Useful for precise power monitoring in data centers and servers.
- Consumer Electronics: Can be used in consumer electronics requiring accurate power monitoring.
- Medical Devices: Applicable in medical devices where precise current and voltage monitoring is crucial.
Q & A
- What is the operating temperature range of the INA226AQDGSRQ1?
The operating temperature range is –40°C to 125°C.
- What is the bus voltage range that the INA226AQDGSRQ1 can sense?
The device can sense bus voltages from 0V to 36V.
- What is the supply voltage range for the INA226AQDGSRQ1?
The supply voltage range is from 2.7V to 5.5V.
- What is the typical supply current of the INA226AQDGSRQ1?
The typical supply current is 330µA.
- Does the INA226AQDGSRQ1 support multiple addresses on the I2C interface?
- What are the alert functions available on the INA226AQDGSRQ1?
The alert functions include shunt voltage over-limit, under-limit, bus voltage over-limit, and conversion ready notifications.
- Is the INA226AQDGSRQ1 AEC-Q100 qualified?
- What is the resolution of the INA226AQDGSRQ1?
The resolution is 16-bit.
- What package type is the INA226AQDGSRQ1 available in?
The device is available in a 10-pin DGS (VSSOP) package.
- Can the INA226AQDGSRQ1 be used in high-side or low-side sensing configurations?
