Hi Frank, in the reference application schematic on the FV-1 datasheet there are a pair of coupling caps (one for each input), and the accompanying paragraph says "The inputs should be conducted through coupling capacitors, as the inputs are internally biased to a VDD/2 potential."
Now if the source driving the FV-1 inputs is already biased at VDD/2, can we omit coupling caps?
Inputs coupling caps
Moderator: frank
You should include the caps, the converters creates this reference internally and is important for proper function. An external Vdd/2 could be slightly off from what the converters want to generate.
Frank Thomson
Experimental Noize
Experimental Noize
You shouldn't use that pin, it is really for the converters and shouldn't be loaded.
Frank Thomson
Experimental Noize
Experimental Noize