Diferential audio preamplifier for(example) bluetooth modules, requires only positive power source, no negative rail requiredDesigned by Tomas Kovacik, Ships from Slovakia
Audio preamplifier with differential input for bluetooth modules based on OVC3860 chip, in my case: blk-md-spk-b S3860M-S XS3868 BK8000L I made this (based on online documentation, and reverssing...Read More…
Audio preamplifier with differential input for bluetooth modules based on OVC3860 chip, in my case:
I made this (based on online documentation, and reverssing from pictures of discontinued product) just for easy development, becaose output ground of this modules can't be connected to power ground ( it has 0.9V offset, in case of OV3860 based modules)
also this could work with F-3188 BLE bluetooth 4.0 module based on CSR8645
It used 12V, I used NE5532 (no luck with LM358), but you can used whatever you want. Also I can populate it or give you parts.
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