The PAC1932/3/4 are two, three and four-channel power and energy monitoring devices. A high-voltage multiplexer sequentially connects the inputs to a bus voltage monitor and current sense amplifier that feed high-resolution ADCs. Digital circuitry performs power calculations and energy accumulation. This enables energy monitoring with integration periods from 1 ms up to 36 hours or longer. Bus voltage, sense resistor voltage and accumulated proportional power are stored in registers for retrieval by the system master or Embedded Controller.

High-Side Current Monitor with 2, 3 or 4 Channels
100 mV full scale range for current sense voltage,16 bit resolution
Selectable bidirectional current sense
capability, -100 mV to +100 mV range, 16 bit
two’s complement (signed) data format
External sense resistor sets full scale current range
Very low input current simplifies routing
Wide Bus Voltage Range for Voltage Monitor
0V to 32V input common-mode voltage