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Forum Index : Microcontroller and PC projects : Headphone Amp
| Author | Message | ||||
| asknik2022 Regular Member  Joined: 26/03/2022 Location: United KingdomPosts: 92 |
Is anybody interested in a Headphone amp controlled by Digital Volume PGA2310 programmed via pi pico I have cirucuit diagam and have pcbway currently making some boards for me. |
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homa Guru  Joined: 05/11/2021 Location: GermanyPosts: 351 |
sounds interesting |
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| asknik2022 Regular Member Joined: 26/03/2022 Location: United KingdomPosts: 92 |
Headphone Amp.pdf Circuit diagram attached. Edited 2024-06-04 01:51 by asknik2022 |
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| homa Guru Joined: 05/11/2021 Location: GermanyPosts: 351 |
Where does the -5V come from? Does it need an extra supply? |
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| asknik2022 Regular Member Joined: 26/03/2022 Location: United KingdomPosts: 92 |
You need a +-5V split rail supply to power the analog side of the PGA2310 and Amp. You need a 5V single rail supply (which can come from the Pico) Via the 6 Way connector which also handles the SPI from the Pico |
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| homa Guru Joined: 05/11/2021 Location: GermanyPosts: 351 |
Thanks for the explanation. |
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| asknik2022 Regular Member Joined: 26/03/2022 Location: United KingdomPosts: 92 |
 I now have the PCB's. If anyone is interested and in the UK, I have a few to give away and can post but only if you are in the uk. |
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