[lottops]

I can't find the informations about a chip marked 'A QA' in ipod photo.
What function is it?
THANKS A LOT…

 

[lottops]

Anyone can help me to identify the chip?

Please…

 

[MCC]

That looks to be Analog Devices' logo. Can't help beyond that though, sorry.

 

[bundee1]

Shots in the dark. The WM chip is a Wolfson Dac I think. The other two chips could be stereo chips of some kind or dual mono opamps?

 

[qusp]

yeah analogue devices chips, but I dont think they are opamps, they have 10 pins a piece, which would be an unusual number for opamps. could be something to do with EQ or a DC to DC converter to set the correct voltage for the signal to the dac. could be CMOS chip too. QA is probably just 'quality assured'

 

[glitch39]

you mean the WM8975 Wolfson DAC chip?

http://www.wolfsonmicro.jp/uploads/d.../jp/WM8971.pdf

8971 is the same as the 8975

 

[lottops]

Thank you……
I want to modify phone out channel to line out channel.
Could I remove the ‘A QA’ chip.