INA219 - Overview
INA219 Voltage & current sensor
The INA219 is a digital device that allows the measurement of current, voltage, and therefore power. Simply connect a Qwiic connector to this device, and it will provide all the information via I2C communication at an address of 0x40. It is very simple and reliable to use. It has a jumper for changing the I2C address, allowing you to connect more than one INA219 to a single microcontroller.
The maximum measurement current is determined by the shunt resistor on the board, which is 0.1 ohm (± 3.2A). It can measure power in both directions! If you want to measure higher currents or smaller currents more precisely, consult the datasheet to select a different resistor. The maximum voltage that can be measured is 26V.
Which product is this documentation for?
INA219 Voltage & current sensor
333066
Key Features
- Power supply voltage: 3V-5V
- Maximum measuring voltage: 26V
- Maximum measuring current: 3.2A
- ADC: 12-bit
- Communication: I2C (address: 0x40, can be changed via jumpers)
- Connector: 2 × Qwiic (formerly easyC) ports (plug-and-play, no soldering needed)
- Mounting: Two mounting holes for secure attachment
- Dimensions: 38 × 22 mm (1.5 × 0.9 inch)
You may also need
Qwiic cable
Qwiic (formerly easyC) compatible cables with connectors on both ends, available in various lengths.