INA219 I2C BI-DIRECTIONAL HIGH SIDE DC CURRENT / POWER MONITOR SENSOR

This breakout board will solve all your power-monitoring problems. Instead of struggling with two multimeters, you can just use the handy INA219B chip on this breakout to both measure both the high side voltage and DC current draw over I2C with 1% precision.

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 32 Amps with a resolution of 8mA)

Features:

• • 0.1 ohm 1% 2W current sense resistor
  • Up to +26V target voltage
  • Up to ±3.2A current measurement, with ±0.8mA resolution
  • Senses Bus Voltages from 0 to 26 V
  • 2C- or SMBus-compatible interface. The
  • Reports Current, Voltage, and Power
  • 16 Programmable Addresses
  • Filtering Options
  • Calibration Registers
  • This board/chip uses I2C 7-bit addresses 0x40, 0x41, 0x44, 0x45, selectable with jumpers

Package Includes:

• • 1 x CJMCU-219 INA219 Power Supply Monitoring Module