ade7903 - 3-Channel Sigma-Delta ADC with SPI

3-Channel Sigma-Delta ADC with SPI. The ADE7903 is a nonisolated, 3-channel, Σ-Δ analog-to-digital converter (ADC) for the neutral line of polyphase energymetering applications using shunt current sensors. The ADE7903 can also be used for single-phase energy meteringand other standalone ADC applications. The ADE7903 features three 24-bit ADCs. The current ADC provides a 67 dBFSsignal-to-noise ratio (SNR) over a 3.3 kHz signal bandwidth, whereas the voltage ADCs provide an SNR of 72 dBFS over thesame bandwidth. One channel is dedicated to measuring the voltage across a shunt when the shunt is used for current sensing.Up to two additional channels are dedicated to measuring voltages, which are usually sensed using resistor dividers.One voltage channel can be used to measure the temperature of the die via an internal sensor. The ADE7903 includes threechannels: one current channel and two voltage channels.Applications