SparkFun Current Sensor - INA237 (Qwiic)

The SparkFun INA237 Qwiic Current Sensor offers precise DC current and power monitoring via I2C. Equipped with the INA237 digital power monitor from Texas Instruments, it measures current, bus voltage, temperature, and power with a 16-bit delta-sigma ADC. It features a 15 mΩ shunt resistor, 3-pin screw terminal, and Qwiic connectors for flexible integration.

Perfect for projects requiring accurate power monitoring, this sensor can be easily integrated into your setup without soldering, thanks to its Qwiic connectors. For those who prefer a more permanent setup, it provides plated through-hole headers for soldered connections. The board's design is compatible with the INA228 breakout, ensuring versatility in your projects.

The advanced alert system of the INA237 is designed to offload processing from your microcontroller. A multi-purpose open-drain alert pin notifies you when conversions are complete or when measurements exceed set thresholds. This includes over/under voltage, current, power, and temperature values, ensuring your project remains protected and efficient.

The sensor's programmable features include threshold alerts for immediate notifications if set limits are breached, a fast 75 microsecond response time to safeguard sensitive components, and flexible sampling options with selectable ADC conversion times and hardware averaging. These capabilities allow your main processor to remain in a low-power state until necessary, optimizing your project's energy efficiency.