TIDA-00307, Analog Front End (AFE) for Merging Units and Multi-Function Protection Relays Reference Design

TIDA-00307, Analog Front End (AFE) for Merging Units and Multi-Function Protection Relays Reference Design. This solution addresses the front end needs of Merging Units where multiple measurement channels for current and voltage are required. This implementation is modular, allowing easy expansion of channels while at the same time keeping the connectivity to the processor minimal by using the SPI daisy chain feature in the SAR ADC. Additionally, this solution is compact because the AFE not only integrates the front end circuitry for each channel, but also integrates a voltage reference with low temperature drift