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http://www.ti.com/general/docs/suppproductinfo.tsp?distId=26&gotoUrl=https%3A%2F%2Fwww.ti.com%2Flit%2Fgpn%2Fina234″>View Datasheet
Texas Instruments INA234 12-Bit Digital Current Monitor comes with an I2C/SMBus-compatible interface compliant with a wide range of digital bus voltages such as 1.2V, 1.8V, 3.3V, and 5.0V. The device monitors the voltage across an external sense resistor and reports current, bus voltage, and power values.
The INA234 features programmable ADC conversion times and averaging. The device also has a programmable calibration value with an internal multiplier that enables direct readouts of current in amperes and power in watts. The device monitors the bus voltage present on the IN–pin and can alert on overcurrent and undercurrent conditions as well as overvoltage and undervoltage conditions. High input impedance while in current measurement mode allows larger current sense resistors to measure small value system currents.
The Texas Instruments INA234 senses current on common-mode bus voltages that can vary from –0.3V to 28V, independent of the supply voltage. The device operates from a 1.7V to 5.5V supply, drawing a typical supply current of 300µA in normal operation. The device can be placed in a low-power standby mode where the typical operating current is 2.2µA.
