| General > General Technical Chat |
| What IC is this? USB 3W audio amp pcb |
| (1/1) |
| Tsardoz:
OK I bought a USB speaker I think I identified as this one https://i-item.jd.com/10041072500661.html as it has sort of the same model number as the PCB (see photo) Image did not attach properly - I dont know how to do this https://ibb.co/HrrnT0Y The problem is, when driving it with a Raspberry Pi sometimes the sound is very distorted, slow and a bit quiet. I think the problem is with USB DAC/CODEC. I want to track the problem down but first I would like to identify the ICs but the numbers have been erased. Given the pinout of the 8 pin amplifier it looks to be an 8002 or similar (pins 5 and 8 connected to the speaker). The USB DAC is much harder to identify. It looks like pins 13 and 14 are wired to the amp via R/C. Yet I cannot find a chip that meets these specs. Probably some cheap Chinese knockoff. This board might have the same IC but again no visible identifcation. https://www.aliexpress.com/item/32680489310.html Any ideas? |
| dietert1:
Maybe similar: https://raw.githubusercontent.com/Arduinolibrary/DFPlayer_Mini_mp3/master/DFPlayer%20Mini%20Manual.pdf Chip: YX5200-24SS Regards, Dieter |
| Tsardoz:
Thanks. It is not that one due to pincounts but it is a great idea. I had not considered usb mp3 players. |
| Navigation |
| Message Index |