INA219 DC Current Sensor Module

Description

The INA219 DC sensor module is a compact and precise integrated circuit used for measuring DC and voltage in electronic systems. It offers high accuracy in current and voltage measurements and communicates with microcontrollers through the I2C interface for easy integration. The CJMCU-219 INA219 module includes the industry-leading INA219 IC, which precisely monitors the pressure drop on the shunt resistor and senses the shunt power supply voltage, allowing for accurate power consumption calculations.

The module measures voltage across the 0.1-ohm 1% sense resistor, enabling precise current measurements of up to ±3.2A with a resolution of ±0.8mA, and even higher ranges with advanced modifications. It operates within a temperature range of -40°C to +85°C, offering a maximum error of 1% accuracy with a maximum offset of 100μV.

It supports communication speeds of up to 3.4MHz and includes a timeout feature to prevent bus lock. The module works with a single power supply within a voltage range of +3.0V to +5.5V and features a 0.1 ohm 1% 2W current sense resistor, supporting target voltage measurements of up to +26V. The module is available in SOT23-8 and SOIC-8 packages, providing flexibility for different application setups. It supports programmable calibration, exhibits low offset and gain drift, and functions within a wide voltage range.

Commonly used in battery monitoring, solar power systems, motor control, and energy monitoring, this module offers reliable and efficient current monitoring and protection against overloads and short circuits.

Feature

1. Precise current and voltage measurements.
2. I2C interface for easy integration.
3. Accurate measurement up to ±3.2A, ±0.8mA resolution.
4. Wide temperature range: -40°C to +85°C.
5. Maximum error: 1% accuracy, 100μV offset.
6. High-speed communication: up to 3.4MHz.
7. Single power supply: +3.0V to +5.5V.
8. SOT23-8 and SOIC-8 package options.
9. Programmable calibration registers.
10. Low offset and gain drift.

Application

1. Battery Monitoring
2. Solar Power Systems
3. Motor Control