INA219 I2C interface High Side DC Current Sensor Breakout power

A precision amplifier measures the voltage across the 0.1 ohm, 1% sense resistor. Since the amplifier maximum input difference is ±320mV this means it can measure up to ±3.2 Amps. With the internal 12 bit ADC, the resolution at ±3.2A range is 0.8mA. With the internal gain set at the minimum of div8, the max current is ±400mA and the resolution is 0.1mA. Advanced hackers can remove the 0.1 ohm current sense resistor and replace it with their own to change the range (say a 0.01 ohm to measure up 3.2 Amps with a resolution of 8mA)


    Precision DC Current Sensor upt to 3.2A
    0.1 ohm 1% 2W current sense resistor
    Resolution: 12Bit - ±0.8mA
    Up to +26V target voltage
    Size 22 x 20mm PCB
    This board/chip uses I2C 7-bit addresses 0x40, 0x41, 0x44, 0x45, selectable with jumpers