ZHCSM18A January 2023 – December 2023 ADS9815 , ADS9817
PRODUCTION DATA
The ADS981x has three separate power supplies: AVDD_5V, VDD_1V8, and IOVDD. There is no requirement for a specific power-up sequence. The data and configuration digital interfaces are powered by IOVDD. A common 1.8-V supply powers the VDD_1V8 and IOVDD pins. Figure 8-4 illustrates the decoupling capacitor connections for the respective power supplies. Each power-supply pin must have separate decoupling capacitors.