SparkFun INA169 Current Sensor Breakout
Overview
The SparkFun 12040 is a high-side current monitor breakout board based on the Texas Instruments INA169 IC. It converts a high-side current measurement into a low-side analog voltage signal that can be easily read by a microcontroller ADC. The board supports common-mode voltages up to 75V, making it suitable for a wide range of power monitoring tasks.
Why Choose This Part
This breakout board provides a simplified 5-pin interface and includes an onboard 0.1 ohm sense resistor and 10k ohm output resistor. It features a wide common-mode input range of 0V to 75V, allowing for high-voltage sensing that exceeds the supply voltage of the monitoring microcontroller.
Applications
Getting Started
Connect the load in series with the RS+ and RS- pins and provide a supply voltage between 2.7V and 60V to the VCC pin. The output voltage at the OUT pin is proportional to the current flowing through the shunt resistor and can be sampled using any standard 10-bit or 12-bit analog-to-digital converter.
