single sided PCM2704 PCB anyone? ( SSOP Package ) - diyAudio
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Old 23rd May 2014, 06:55 PM   #1
Mihkus is offline Mihkus  Estonia
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Default single sided PCM2704 PCB anyone? ( SSOP Package )

Ive been looking for single sided PCB for that chip but havent found anything I could use...
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Old 23rd May 2014, 08:59 PM   #2
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Proper digital layout require at least a two sided board.
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Old 23rd May 2014, 09:10 PM   #3
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That being said, I drew this a few years ago...
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Old 10th September 2014, 05:16 AM   #4
Mihkus is offline Mihkus  Estonia
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Double sided versions anyone?
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Old 10th September 2014, 12:03 PM   #5
marce is offline marce  United Kingdom
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How soon do you need one and have you any schematics in mind.
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Old 10th September 2014, 03:29 PM   #6
Mihkus is offline Mihkus  Estonia
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Im not very familiar with digital designs.. Just a basic USB dac, nothing special maybe external power supply only. I might start it by myself...
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Old 10th September 2014, 03:41 PM   #7
marce is offline marce  United Kingdom
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I was going to say if you had a simple schematic I'd throw a layout together, shouldn't take more than an hour or two.
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Old 10th September 2014, 04:16 PM   #8
Mihkus is offline Mihkus  Estonia
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That would be really nice from you. Its hard to draw small things with ExpressPCB and it lacks of components and making one is messed up.. Nosence program.
Source: USB audio DAC with PCM2704
Designs looks a little dodgy...

As basic as you can make, 1206 sized resistors/small capacitors would be good 805 can be soldered too.. I already have all the parts but random 12MHz clock.. THT one with lead spacing 5.08

Last edited by Mihkus; 10th September 2014 at 04:21 PM.
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Old 10th September 2014, 05:11 PM   #9
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There is always some speculation of what is the best DAC. The Lampizator modded Behringer Ultramatch SC250 appealed to me, but when his article was put on the Net you could no longer buy the original version pre2009 of the Behringer, which looks the same but sounds indifferent, and can no longer be modded to his 'beat the rest' version with or without Lampization valve output.

FM radio via the BBC R3 classical program live concerts beat any digital source in my view, so why pay a bomb for something that can only try to achieve analogue quality. One extra opamp or ADC DAC conversion and the subtlelty seems to have been lost. Long live BBC FM radio broadcasts. Government has now stated the fm to digtial radio change over in UK has been put on hold indefinitely. Hoorah ! The BBC use 100 + stacked DAC's to get the broadcast out presumably to emulate analogue quality.

Any body found any different with DACs over analogue.

Last edited by boldname; 10th September 2014 at 05:15 PM.
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Old 11th September 2014, 07:49 AM   #10
marce is offline marce  United Kingdom
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I'll have a look at the Data sheets over the weekend.
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