Jacques321
- Jan 6, 2016
- 3
- Joined
- Jan 6, 2016
- Messages
- 3
I've soldered the TDA7386 with all necessary components (as advised on datasheet) onto a circuit board and it works fine when connected to a source, except for the fact that it generates quite a lot of noise. The noise is not audible when I connect my phone to the amplifier at full volume, but it is clearly audible when just connected to a wire or to my phone at a lower volume. If I connect nothing to the input terminal (that is to the capacitor that goes to pin 11/12/14/15) there is really no noise at all, but the longer the wire is that goes to the source the more background noise there is. I want to use this amplifier for my computer, so it my not have any audible noise, so how can I fix this? Maybe I'm using the wrong type of capacitors for C1-C4, I'm using film capacitors?![2016-01-06 17_24_29-www.st.com_web_en_resource_technical_document_datasheet_CD00000875.pdf.png 2016-01-06 17_24_29-www.st.com_web_en_resource_technical_document_datasheet_CD00000875.pdf.png](https://maker.pro/forums/data/attachments/22/22746-fe18c4050b47397dbd2444ad9f018031.jpg)
![2016-01-06 17_24_29-www.st.com_web_en_resource_technical_document_datasheet_CD00000875.pdf.png 2016-01-06 17_24_29-www.st.com_web_en_resource_technical_document_datasheet_CD00000875.pdf.png](https://maker.pro/forums/data/attachments/22/22746-fe18c4050b47397dbd2444ad9f018031.jpg)