Product Description
INA219 High Precision Bidirectional Current/Power Sensor Module - Zero-Drift, High-Speed Monitoring for Electronics & IoT
The INA219 Module revolutionizes power management with its zero-drift, bidirectional current/power monitoring capabilities. Engineered by Texas Instruments, this compact sensor delivers industry-leading accuracy in a 3.0x5.0mm SOT23 package, making it ideal for space-constrained applications like servers, laptops, and automotive systems.
Key Features:
Precision Measurement: 1% error across -40°C to +85°C with 12-bit resolution, detecting currents from ±0.001A to ±3.2A and bus voltages up to 26V.
Dual-Direction Monitoring: Measures both forward and reverse currents, enabling comprehensive energy management in bidirectional power systems.
Direct Readout Technology: Programmable calibration register provides real-time current (mA) and power (mW) values via I2C, streamlining data interpretation.
Noise Reduction: 128-sample averaging filters out electrical noise, ensuring stable readings in high-interference environments.
High-Speed I2C: 3.4 MHz interface with timeout protection prevents bus lockouts, supporting rapid data transfer for real-time applications.
Low Power Design: Single 3.0-5.5V supply operation with minimal quiescent current for battery-powered devices.
Applications:
Server and laptop power management
Battery health monitoring in electric vehicles
Renewable energy systems (solar/wind)
Industrial motor control
IoT devices and smart home automation
Technical Specifications:
Current Range: ±3.2A (with 0.1Ω shunt)
Voltage Range: 0-26V bus, 3.0-5.5V supply
Resolution: 12-bit (0.125mA/LSB)
Accuracy: ±1% (full temperature range)
Interface: I2C (address 0x40 default)
Dimensions: 3.0x5.0x1.1mm SOT23 package
Package Includes:
10x INA219 Modules