Diferential audio preamplifier for(example) bluetooth modules, requires only positive power source, no negative rail required
Designed by Tomas Kovacik in Slovakia
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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 f…
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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1 | $1.00 |
2 | $0.95 |
3 | $0.90 |
4 | $0.85 |
5 | $0.80 |
6 | $0.75 |
7 | $0.70 |
8 | $0.65 |
9 | $0.60 |
10+ | $0.55 |
Product: (5.00)
Documentation: (5.00)
Shipping: (5.00)
Communication: (5.00)
Fabio | Sept. 19, 2019
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