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arduino based pga2311/4311 system
arduino based pga2311/4311 system
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Old 17th September 2011, 09:19 AM   #1
fvdberg is offline fvdberg
diyAudio Member
Join Date: Jun 2010
Default arduino based pga2311/4311 system

I've been working on a PGA2311 / PGA4311 system based on an Arduino compatible platform. I build a PGA2311 board that can be run from a single 5V powersupply using a DC/DC convertor or from an external powersupply. This PCB accepts 6,25" jack, header connection or cinch. The PGA4311 board is about to be released. Design details are on my blog and there is an adruino library for the boards available.The boards can be daisychained to add more channels.

Click the image to open in full size.Click the image to open in full size.Click the image to open in full size.

By now I've got the system working and have put some demo's on youtube. I've also build an arduino compatible processorboard that may carry a graphics display an a IRreceiver.

T4A AudioPlug demo - YouTube
AudioPlug Test - YouTube

If you're interested, look at my blog: SceneLight & SceneAudio

Last edited by fvdberg; 17th September 2011 at 09:48 AM.
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Old 20th October 2011, 01:43 PM   #2
seppi0815 is offline seppi0815
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Join Date: Sep 2009
Could you please provide the Eagle library of the PGA4311 device?
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Old 20th October 2011, 02:08 PM   #3
linuxworks is offline linuxworks  United States
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Join Date: Jul 2008
Location: Santa Clara, CA
isn't this actually more 'analog line level' ? the PGA chip is an analog device, even though it happens to be digitally controlled.
My Photostream:http://www.flickr.com/photos/linux-works/
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Old 1st November 2011, 06:17 PM   #4
seppi0815 is offline seppi0815
diyAudio Member
Join Date: Sep 2009
Default PGA4311 audio kit

I am following a more sophisticated approach including:
Switched mode power supply control
On-board low noise linear regulators
4 channel individual control audio
Power amplifier Bridge functionality
Power amplifier mute and stand-by control
Remote volume control over RS232
NV volume memory
Analog VU meter modeling (dspic33 emulation with IIR filter)
Overshoot protection mechanism
AGC control
Full separated Digital/Analog path using signal optoelectronics
120dB log compressor to feed the 10bit ADC for automatic signal detection (auto power on)
Full wave rectifier for input power detection and VU meter

See the board layout attached. For more info PM me.
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