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AD636 with 0-230 VAC Input

Question asked by donajaykrishna on Aug 10, 2015
Latest reply on Aug 12, 2015 by jstaley
Branched from an earlier discussion



I'm building a voltage measurement device for measuring 0-230 VAC input for a light dimmer. I just learnt about Analog Devices AD536 and AD636 ICs. I have the following doubts:


1. I want millivolt precision for detecting voltages; can you provide me with a application note or circuit diagram for converting 0-300VAC to 0-5VDC (I want true rms converter, as waveform is not pure sine).


2. How to 0-230VAC input range be extended to higher range; what modifications are required in the circuit?