How to bypass the built-in D amplifier?
Hi again guyz! My project is moving forward just fine. Now I realize that I really need 2 linear outputs on my 1701 mini board and do not need D amplifier at all. Is there any way to bypass it without re-soldering? May be it has sort of a through-mode and I just need to pull up or down one of its pins? So shortly speaking, do I have to modify the board in order to get the second output in the linear mode or I can do so without any soldering?
Happy coming new year!
Hi Skfir. I just returned from the New Years break. Sorry that I wasn't able to address your question in the meantime.
There is no way to put the Class D amp into bypass mode. I think the simplest way to access the DAC0 and DAC1 signals coming out of the ADAU1701 would be to tap them off of the node in between C3 and R2 (and between C5 and R4). You could basically solder wires onto the board at those nodes to connect the signals out to another audio sink.
Of course, if you aren't planning to use the Class D amp, you can just remove R2 and R4 entirely.
That is exactly what I did. Thanks mate!!
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