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ADuM6400: Vdd1= 5V, Vddl = 3.3V?

Question asked by e.galvez on Jan 28, 2013
Latest reply on Jan 28, 2013 by e.galvez



I want to supply an isolated load at 5V, with 5V logic levels, so Vdd1 must be 5V in order to get Viso = 5V, to meet the specs.

But the input logic level is coming from a microcontroller at 3.3V.

May I supply the Vddl pin with 3.3V (using a linear regultaor from the 5V Vdd1), in order to have a diferent logic voltage?