For product comparison, please consider:

The PAC1934 is a four channel power/energy monitor with current sensor amplifier and bus voltage monitors that feed high resolution ADCs.  Digital circuitry performs power calculations and energy accumulation.  The PAC1934 enables energy monitoring with integration periods from 1 ms to up to 36 hours.  Bus voltage, sense resistor voltage, and accumulated proportional power are stored in registers for retrieval by the system master or embedded controller.

The sampling rate and energy integration period can be controlled over SMBus or I2C.  Active channel selection, one-shot measurements, and other controls are also configurable.  The PAC1934 uses real time calibration to minimize offset and gain errors.  No input filters are required for this device.

  High-Side Current Sensor (4 Channels)

  100 mV full scale voltage sense range, 16-bit resolution

  Bidirectional or unidirectional options

  Wide Bus Voltage Measurement Range 0V to 32V, 16-Bit Resolution

  1% Power Measurement Accuracy Over a Wide Dynamic Range

  On-Chip Accumulation of 28-Bit Power Results for Energy Measurement

  48-bit power accumulator register for recording data

  24-bit accumulator count

  User programmable sampling rates of 8, 64, 256, 1024 samples per second

  36 hours of power data accumulation at 8 samples per second

  2.7V to 5.5V Supply Operation

  Separate I/O Pin for Digital I/O 1.62-5.5V

  I2C® Fast Mode Plus (1Mp/S) and SMBus 3.0

  WLCSP package (2.225 x 2.17)

Applications

  WIN10 laptop, tablet, workstation, cell phone

  Networking

  Automotive

  Linux® Systems

  Linux, Microsoft®, and Cloud Servers

  Industrial