The MCP3918 is a 2.7V to 3.6V single channel Analog Front End (AFE)
containing a Delta-Sigma Analog-to-Digital Converter (ADC), PGA,
internal voltage reference, modulator output block, and highspeed
20 MHz SPI compatible serial interface. For polyphase shunt based
energy meters, the MCP3918 2-wire serial interface greatly reduces
system cost requiring only a single bidirectional isolator per
phase. The MCP3918 is capable of interfacing a large variety of
voltage and current sensors including shunts, current transformers,
Rogowski coils and Hall effect sensors. It is ca[able of supporting
a dynamic range of 10000:1