SBAS883A February 2018 – June 2018 OPT3101
PRODUCTION DATA.
Figure 176 shows the supply network with 1.8 V generated using an off-chip regulator. The REG_MODE pin of the OPT3101 device should be connected to IOVSS in this mode. One external regulator can be used to generate the 1.8-V supply and use beads to isolate AVDD and DVDD. The external regulator mode is useful only when the on-chip regulator mode cannot meet the power-down-state current requirement. For example, in systems where the sample rate is very low that are kept in the power-down state most of the time.