TIINA219AIDR
Overview
The INA219AIDR is a zero-drift, bidirectional current and power monitor with an I2C-compatible interface. It monitors both shunt voltage drop and bus supply voltage, providing real-time power calculations and calibration values via a digital serial bus. Designed for high-side sensing, it operates on bus voltages from 0V to 26V.
Why Choose This Part
The device features a high accuracy of 0.5 percent and a 12-bit ADC for precise measurements across a wide temperature range of -40 to 125 degrees Celsius. Its zero-drift architecture minimizes the need for frequent recalibration while the 16 programmable I2C addresses allow for extensive scalability on a single bus.
Applications
Key Specifications
Getting Started
To begin development, connect the INA219AIDR to a microcontroller via the I2C interface and provide a supply voltage between 3V and 5.5V. Texas Instruments offers the INA219EVM evaluation module for rapid prototyping, and various open-source libraries are available for Arduino and Raspberry Pi platforms to simplify register configuration.
INA219 Family
Comparing specs that differ across variants. The current part is highlighted.
| Part Number | Accuracy | Stock |
|---|---|---|
| INA219AIDR (this part) | +/-1% | 12,449 |
| INA219BIDR | +/-0.5% | 24,044 |
| INA219EVM | — | 6 |
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