Overview
The INA219AID is a high-precision current shunt and power monitor produced by Texas Instruments. This device is designed to monitor both shunt voltage drop and bus supply voltage, providing accurate measurements of current, voltage, and power. It features an I2C- or SMBUS-compatible interface, making it versatile for various applications. The INA219AID operates within a temperature range of -40°C to 125°C and uses a single 3- to 5.5-V supply, drawing a maximum of 1 mA of supply current.
Key Specifications
| Parameter | Specification |
|---|---|
| Package | SOIC-8 |
| Pins | 8 |
| Operating Temperature Range (°C) | -40 to 125 |
| Supply Voltage | 3 to 5.5 V |
| Supply Current | Maximum 1 mA |
| Bus Voltage Range | 0 to 26 V |
| Resolution (Bits) | 12 |
| Accuracy (Maximum) | 0.5% over temperature (INA219B) |
| Interface | I2C or SMBUS |
| Programmable Addresses | 16 |
Key Features
- Senses bus voltages from 0 to 26 V
- Reports current, voltage, and power
- 16 programmable addresses for I2C or SMBUS interface
- High accuracy: 0.5% maximum over temperature (INA219B)
- Filtering options and calibration registers
- Bidirectional current measurement
- Programmable gain and conversion times
- Available in SOT23-8 and SOIC-8 packages
Applications
The INA219AID is suitable for a variety of applications where precise current and power monitoring are required. These include:
- Power supply monitoring in industrial and consumer electronics
- Battery management systems
- Automotive systems
- Server and data center power monitoring
- Renewable energy systems
Q & A
- What is the operating temperature range of the INA219AID?
The INA219AID operates within a temperature range of -40°C to 125°C.
- What is the supply voltage range for the INA219AID?
The device uses a single 3- to 5.5-V supply.
- What is the maximum supply current of the INA219AID?
The maximum supply current is 1 mA.
- What is the bus voltage range that the INA219AID can sense?
The device can sense bus voltages from 0 to 26 V.
- What interface does the INA219AID use for communication?
The INA219AID uses an I2C or SMBUS-compatible interface.
- How many programmable addresses does the INA219AID have?
The device has 16 programmable addresses.
- What is the resolution of the INA219AID?
The resolution is 12 bits.
- What is the accuracy of the INA219B version of the INA219?
The accuracy is 0.5% maximum over temperature.
- Does the INA219AID support bidirectional current measurement?
- What packages are available for the INA219AID?
The device is available in SOT23-8 and SOIC-8 packages.
