Overview
The INA219AIDR is a high-accuracy, bidirectional current shunt and power monitor produced by Texas Instruments. This device is designed to monitor both shunt voltage drop and bus supply voltage, providing detailed measurements of current, voltage, and power. It features an I2C- or SMBUS-compatible interface with 16 programmable addresses, making it versatile for various applications. The INA219AIDR operates with a single 3- to 5.5-V supply, drawing a maximum of 1 mA of supply current, and is available in SOIC-8 and SOT23-8 packages. It is suitable for a wide range of temperatures from -40°C to 125°C.
Key Specifications
| Parameter | Value |
|---|---|
| Package | SOIC-8, SOT23-8 |
| Pins | 8 |
| Operating Temperature Range (°C) | -40 to 125 |
| Supply Voltage Range (V) | 3 to 5.5 |
| Maximum Supply Current (mA) | 1 |
| Bus Voltage Range (V) | 0 to 26 |
| Resolution (Bits) | 12 |
| Accuracy (Maximum % over Temperature) | 0.5% (INA219B) |
| Interface | I2C- or SMBUS-compatible |
| Programmable Addresses | 16 |
Key Features
- Senses bus voltages from 0 to 26 V
- Reports current, voltage, and power
- 16 programmable addresses
- High accuracy: 0.5% (maximum) over temperature (INA219B)
- Filtering options
- Calibration registers
- Programmable gain and conversion times
- Bidirectional current measurement
Applications
The INA219AIDR is suitable for a variety of applications, including but not limited to:
- Power supply monitoring
- Battery management systems
- Automotive systems
- Industrial control systems
- Consumer electronics
Q & A
- What is the operating temperature range of the INA219AIDR?
The INA219AIDR operates from -40°C to 125°C. - What is the supply voltage range for the INA219AIDR?
The supply voltage range is from 3 to 5.5 V. - How many programmable addresses does the INA219AIDR have?
The INA219AIDR has 16 programmable addresses. - What is the maximum accuracy of the INA219B grade over temperature?
The maximum accuracy is 0.5% over temperature. - What types of packages are available for the INA219AIDR?
The INA219AIDR is available in SOIC-8 and SOT23-8 packages. - What is the resolution of the INA219AIDR?
The resolution is 12 bits. - Can the INA219AIDR measure bidirectional current?
Yes, the INA219AIDR can measure bidirectional current. - What interface does the INA219AIDR use?
The INA219AIDR uses an I2C- or SMBUS-compatible interface. - What is the maximum supply current of the INA219AIDR?
The maximum supply current is 1 mA. - What is the bus voltage range that the INA219AIDR can sense?
The bus voltage range is from 0 to 26 V.
