Hi all,
This may be a daft question - but can you use the digital isolators, such as https://www.analog.com/media/en/technical-documentation/data-sheets/ADUM3200_3201.pdf to isolate a high voltage analogue signal? It seems as though maybe you can, since the document says they can replace opto-couplers with none of the side effects. But the "digital" in the name is confusing me. Maybe the way the chips isolate the signal is through a "digital" method, but it can still be used to isolate an analogue signal.
Reason I need the isolation: My DC/DC converter has a clamping capacitor which I want to keep below 400V, for fault detection. I may also use it for voltage feedback and control later down the line if needed. At the moment, I am just wondering the best way to isolate this voltage. I want to have at least 800V reinforced isolation and ideally it would be high speed since it is primarily for fault detection. It will be passed to a DSP with 15V supply voltage.
This may be a daft question - but can you use the digital isolators, such as https://www.analog.com/media/en/technical-documentation/data-sheets/ADUM3200_3201.pdf to isolate a high voltage analogue signal? It seems as though maybe you can, since the document says they can replace opto-couplers with none of the side effects. But the "digital" in the name is confusing me. Maybe the way the chips isolate the signal is through a "digital" method, but it can still be used to isolate an analogue signal.
Reason I need the isolation: My DC/DC converter has a clamping capacitor which I want to keep below 400V, for fault detection. I may also use it for voltage feedback and control later down the line if needed. At the moment, I am just wondering the best way to isolate this voltage. I want to have at least 800V reinforced isolation and ideally it would be high speed since it is primarily for fault detection. It will be passed to a DSP with 15V supply voltage.