I am looking for recommendations for single supply (5V) compact output buffer for WM8740 which has differential voltage outputs. I could not find any specs for these signals, but I am guessing they must be between 0 and 5V, which is the power supply of the DAC. I would like to run whole board (USB->Audio Widget->I2S->ADAU1701 DSP->I2S->WM8740 on USB power.
Not for sale yet I think, but the lazy (minimum component) approach for single supply headphone drive.
http://www.akm.com/akm/en/file/datasheet/AK4205EN.pdf
http://www.akm.com/akm/en/file/datasheet/AK4205EN.pdf
Now that you mentioned it, do I need a buffer at all in that case? WM8740 already has a low pass filter embedded...
Just a thought, it isn't possible to use an AD8606 as buffer? It is one already working on a 5Vdc supply on the boards, so that should not be an issue?
There are several other low supply voltage opamps, I don't know how they behave on a single supply though.
I have some, don't remember which though, I'd have to check my parts-drawers and look at the datasheets.
There are several other low supply voltage opamps, I don't know how they behave on a single supply though.
I have some, don't remember which though, I'd have to check my parts-drawers and look at the datasheets.
This one should work on single supply with output cap added:
DAC with WM8740
unless I am missing something.
DAC with WM8740
unless I am missing something.
Not really, Adau1701 dacs already have 0.9vrms and sound great.
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