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Oh interesting. The datasheet for the PCM5102A says it supports line-level output with a minimum load of 1kΩ [1]. I think most headphones typically have an im
by monomial 9mo ago
Oh interesting. The datasheet for the PCM5102A says it supports line-level output with a minimum load of 1kΩ [1]. I think most headphones typically have an impedance of less than 100Ω. I'd guess the excess current results in some distortion or low volumes? It works fine in practice though?
[1] https://www.ti.com/document-viewer/pcm5102a/datasheet https://www.ti.com/document-viewer/pcm5102a/datasheet
- fsniper 9mo agoI only checked it with a mdr-zx770bn. And it was OK. But as I did check that with a breadboard, any noise could be attributed to bad connections/emi. Now I'll check it when I work on this next time. Probably in the upcoming days. ( Still my current protoboard would be only a tad bit better )
- fsniper 9mo agoI rechecked it. There is no noise or distortion. In fact volume levels are pretty good. I am using some digital volume control and can't go too high.