Question
Can I power any devices off Vddiso?
Answer
No. Do not connect external active circuitry to this pin. Decouple this pin
with a 10 μF capacitor in parallel with a ceramic 100 nF capacitor using GNDISO
pin 2.
ADE7912
Production
The ADE7912 / ADE7913 are isolated, 3-channel Σ-Δ ADCs for a variety of applications such as shunt-based polyphase meters, power quality monitoring...
Datasheet
ADE7912 on Analog.com
Question
Can I power any devices off Vddiso?
Answer
No. Do not connect external active circuitry to this pin. Decouple this pin
with a 10 μF capacitor in parallel with a ceramic 100 nF capacitor using GNDISO
pin 2.