INA219 Power Monitoring Sensor Module

INA219 I²C Zero Drift Bi-directional Current Power Supply Sensor Breakout Monitoring Module

INTRODUCTION

INA219 module is a zero-drift, bidirectional current/power monitoring INTEGRATED circuit(IC) with an I2C interface, further expanding the TI energy-saving electronic product base. With the highest accuracy and smallest size in the industry,the INA219 can not only monitor the voltage drop on the shunt resistor, sense the shunt supply voltage, but also calculate the power supply.The device, packaged in SOT23, provides a small, low-cost solution for servers,notebook computers, power supplies,battery management,and digital electrical influenza measurement for vehicle-mounted and telecommunications equipment.

INA219 can achieve a maximum error accuracy of100 with a maximum offset of 100uV in the temperature range of -40°C to +85°C.The combination of high precision and 12-bit resolution helps customers minimize pressure drop on shunt resistors, thus minimizing power loss and power consumption and saving board level space. The device can sense the bus voltage range from 0V to +26V.

FEATURES

• Programmable calibration registers can read current directly in amperes and power in watts;
• Up to 128 samples can be averaged for filtering in noisy environments;
• I2C interface with timeout setting, not only can avoid bus lock, but also can provide high-speed mode,meet the communication requirements of up to 3. 4MHz;
• All features of INA219 support sofware programmabilty;
• Single power supply with operating voltage between +3.0 and +5.5V.