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Old 15th January 2010, 01:55 PM   #61
Vikt0r is offline Vikt0r  Ukraine
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Quote:
Originally Posted by Pryanick View Post
Hi
2 Vikt0r
If its not too late I can post here my PCB version under PGA2310 danzup project. But I dont use any specific soft for PCB tracing, I draw all my PCBs in CorelDrawX3.
If its ok - just ask an I publish it here today in the evening.
Preved, Pryanick!
Sure, I'm interested. But does your PCB feature the SMD atmega?
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Old 15th January 2010, 02:03 PM   #62
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Default Pcb

2 Vikt0r
Sorry, but only PDIP
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Old 15th January 2010, 02:52 PM   #63
jkraxi is offline jkraxi  Romania
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Dan,
You forgot about shunt operation mode, also supported by pcb design.
Can you consider to update the GB post title
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Old 15th January 2010, 03:10 PM   #64
danzup is offline danzup  Romania
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Quote:
Originally Posted by Vikt0r View Post
Preved, Pryanick!
Sure, I'm interested. But does your PCB feature the SMD atmega?
You can use the gerbers and files for controller only pcb (the pcb with atmega16-8au smd and LCD) from project nr.3 , from here :
:: vicol audio :: R-2R volume controller ::
and then I will rewrite the soft and post a schematics for connecting this controller (the pcb with atmega and LCD) with a pcb with pga2310 and relay for input selection ( made by you or another from forum ).

Do you want this ?
Because first must be cut the rest of the pcb from pannel ..... to remain only the control board !
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Last edited by danzup; 15th January 2010 at 03:16 PM.
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Old 15th January 2010, 08:42 PM   #65
Vikt0r is offline Vikt0r  Ukraine
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Oh, guys - thanks, appreciate - but no need to.
Hopefully during the weekend I'll develop something by myself.
Anyway, I'm planning to place the controller and the PGA+relays to different
boards in order to minimize the affect of the digital stage to the analog. It's
going to be "one more design", let's see if I can make it.
Will come back soon.
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Old 16th January 2010, 05:07 PM   #66
Vikt0r is offline Vikt0r  Ukraine
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Finished designing, etching and drilling the analogue stage PCB. Took me about 4 hours all in all. Photos will follow soon. The PCB fits the input/output jacks, relays, a ULN2003A driver, the PGA 2310 and a 7805 voltage regulator for it's digital part alone. Analogue and digital grounds are split apart and connected via a ferrite bead inductor. Signal path is minimized.
Let's say it's an attempt to get a step closer to a "proper implementation" of this chip. If anyone's interested - I'll share the design as well - it's already possible to use it combined with the microcontroller (which is recommended to be kept as far away as possible from the signal path).
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Old 16th January 2010, 08:55 PM   #67
Vikt0r is offline Vikt0r  Ukraine
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So here is how it looks like.
The PGA is bypassed with small SMD ceramic caps close to the leads. The ferrite bead is also an SMD inductor. The analog PSU bypass caps are Rubycon ZLG, the digital part bypassed with a Sanyo OSCON.
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Old 17th January 2010, 08:43 AM   #68
danzup is offline danzup  Romania
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Quote:
Originally Posted by Vikt0r View Post
So here is how it looks like.
The PGA is bypassed with small SMD ceramic caps close to the leads. The ferrite bead is also an SMD inductor. The analog PSU bypass caps are Rubycon ZLG, the digital part bypassed with a Sanyo OSCON.
Exceptional !!! I like`t !
Congratulation for your PCB !
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Old 17th January 2010, 10:54 AM   #69
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2 Vikt0r
Perfect PCB!
Well done!
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Old 17th January 2010, 12:50 PM   #70
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Default Bravo!

Exellent job, Vikt0r. It's hard to belive that your work is done in just four hours. I work a month and a half and I didn't finish yet . Congratulations .
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