Overview
The INA219BID is a high-side current shunt and power monitor from Texas Instruments, designed for precision current and power measurement. It features an I2C or SMBus interface, enabling easy integration into various systems. This component is ideal for applications requiring accurate monitoring of current, voltage, and power, such as server power management, battery charging systems, and industrial automation. Its compact SOT-23-8 package and wide operating temperature range make it suitable for space-constrained and harsh environments.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Bus Voltage Range | 0 to 26 | V | |
| Supply Voltage | 3 to 5.5 | V | |
| Supply Current | 1 | mA | Max |
| Operating Temperature | -40 to +125 | °C | |
| Accuracy | ±0.5 | % | Over temperature range |
| Package | SOT-23-8 | ||
| Bandwidth | 11 | kHz | |
| I2C Addresses | 16 | Programmable |
Key Features
- Measures current, voltage, and power with high accuracy.
- Supports bidirectional current measurement.
- Programmable calibration and address settings via I2C/SMBus.
- Compact and robust SOT-23-8 package.
- Wide operating temperature range for industrial applications.
Applications
The INA219BID is widely used in server power management, telecom equipment, laptops, and power supplies. It is also suitable for battery charging systems, welding equipment, and test equipment, providing precise monitoring and control of power parameters.
Q & A
1. What is the operating voltage range of the INA219BID?
The operating voltage range is 3V to 5.5V.
2. Can the INA219BID measure negative currents?
Yes, it supports bidirectional current measurement.
3. What is the accuracy of the INA219BID?
It has an accuracy of ±0.5% over the entire temperature range.
4. How many I2C addresses are available?
There are 16 programmable I2C addresses.
5. What is the maximum bus voltage it can measure?
The maximum bus voltage is 26V.
6. Is the INA219BID suitable for industrial applications?
Yes, it operates reliably in temperatures ranging from -40°C to +125°C.
7. What package does the INA219BID come in?
It is available in an SOT-23-8 package.
8. Can it measure power directly?
Yes, it calculates power using measured current and voltage.
9. What is the typical supply current?
The typical supply current is 1mA.
10. Is calibration required for accurate measurements?
Yes, the device includes a programmable calibration register for improved accuracy.
