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Old 22nd January 2012, 09:35 AM   #11
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Location: Malmoe
Thank you, the first schematic is new to me so I tried that without any luck though. The second is from the datasheet which I based my own schematic on.

Regretfully, it seems I'm facing bad soldering or a broken chip. I soldered @ approx 350 celcius and afterwards I noticed from specs that the chip can withstand a max of 260 for 5 seconds...

Thanks for all your help guys!
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Old 22nd January 2012, 09:42 AM   #12
JensH is offline JensH  Denmark
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On your schematic it looks like C1 is shorted, but I assume that that is not the case.
You don't describe what the distance is from your supply to the IC, but I strongly suggest to add bypass capacitors on the supply pins. Preferably very close to the IC.
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Old 22nd January 2012, 02:23 PM   #13
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Thanks for your input. In reality C1 isn't shortened but it is in the schematics, I'll fix that.
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Old 22nd January 2012, 04:48 PM   #14
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Yep, temperature can kill your chip... Use a good low-temperature solder and use 365F temperature - the chip won't get hot if you limit the exposure time and quantity of solder.
For desoldering I use this.
The 63/37 ratio, known as eutectic solder has practically no plastic range, and melts almost instantly at 183C (361F).

Last edited by SoNic_real_one; 22nd January 2012 at 04:52 PM.
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Old 4th January 2013, 06:16 AM   #15
wmincy is offline wmincy  Malaysia
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hi hanzibal,

did you fix the problem? does your DIR9001 work?

I'm a having quite the same problem... error = 1
I checked the signal at RXin with the oscilloscope and there was nothing wrong, yet there are no signals at LRCK, BCK, SCK...
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Old 4th January 2013, 11:15 AM   #16
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Quote:
Originally Posted by wmincy View Post
hi hanzibal,

did you fix the problem? does your DIR9001 work?

I'm a having quite the same problem... error = 1
I checked the signal at RXin with the oscilloscope and there was nothing wrong, yet there are no signals at LRCK, BCK, SCK...
Sadly not so i put that project on hold in favor of others. The chip is fairly easy to work with so in retrospect, I think my soldering was bad, i.e. I overheated the chip while soldering.

I'll be taking the project up again as I will be needing an SP/DIF receiver for upcoming projects. Don't know exactly when this will happen though.

As for your problem, it could still be unsupported input format. AFAIK, the chip only accepts regular PCM audio @ 96kHz max. That is, not any of the many encoded/compressed or multi-channel formats (like DTS and similar).

If I remember correctly there's an error pin out that you could check.

Hope this helps.
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