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Help to identity CHIP on IPOD photo

post #1 of 7
11/26/09 at 7:10am
Thread Starter 
I can't find the informations about a chip marked 'A QA' in ipod photo.
What function is it?
THANKS A LOT…
LL
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post #2 of 7
11/28/09 at 10:47pm
Thread Starter 
Anyone can help me to identify the chip?
Please…
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post #3 of 7
11/28/09 at 11:02pm
That looks to be Analog Devices' logo. Can't help beyond that though, sorry.
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post #4 of 7
11/29/09 at 4:51am
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?
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post #5 of 7
11/29/09 at 6:02am
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'
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post #6 of 7
11/29/09 at 1:14pm
you mean the WM8975 Wolfson DAC chip?

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

8971 is the same as the 8975
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post #7 of 7
12/2/09 at 10:28am
Thread Starter 
Thank you……
I want to modify phone out channel to line out channel.
Could I remove the ‘A QA’ chip.
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