VC23, my new PGA2310 project - Page 2 - diyAudio
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Old 12th October 2010, 10:54 AM   #11
alkasar is offline alkasar  France
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hello Hifimediy,you read in my mind with your projects

a couple of questions
why use pga2310 and not pga2311 ?
will it be possible to operate also with buttons ? volume control seems obvious. Will on/off and channel selector buttons also be possible ?
one more : ability to control switch on/off of an external board ?

Last edited by alkasar; 12th October 2010 at 11:13 AM.
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Old 12th October 2010, 01:24 PM   #12
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Hi my friend.
Actually we can use PGA2311 on this board, just need to change to supply voltage for analog circuit. And when PGA2310 used, it's +/-12V for analog, that is the recommanded voltage for many good OPA. That's why I prefer PGA2310. And PGA2311 is the second choice.
It can be controlled by remote or rotary decoder(EC11). By EC11, we can control volume, channel, and turn on/off. The external board will be controlled synchronously.
hifimediy
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Old 12th October 2010, 01:26 PM   #13
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Also, the parameter(volume, channel and remote key code) can be storaged when power off.
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Old 12th October 2010, 02:56 PM   #14
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Default display

It's simple but effective.
Attached Images
File Type: png LED states.PNG (34.3 KB, 1342 views)

Last edited by hifimediy; 12th October 2010 at 02:58 PM.
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Old 12th October 2010, 03:51 PM   #15
alkasar is offline alkasar  France
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Quote:
Originally Posted by hifimediy View Post
Hi my friend.
Actually we can use PGA2311 on this board, just need to change to supply voltage for analog circuit. And when PGA2310 used, it's +/-12V for analog, that is the recommanded voltage for many good OPA. That's why I prefer PGA2310. And PGA2311 is the second choice.
It can be controlled by remote or rotary decoder(EC11). By EC11, we can control volume, channel, and turn on/off. The external board will be controlled synchronously.
hifimediy
thanks. Very interesting I now realize that, except voltage, pga2310 and 2311 are very similar. I plan to put a volume control board in a box with a DAC. As you say, many DACs require +/- 12V. So only one transfomer could do for both
This volume control board will require very little power I presume ?

You will have to detail how this will be operated : many fonctions for the single rotary encoder
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Old 12th October 2010, 08:43 PM   #16
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Yes, definately you are Sony with disguise...!! What prototyping speed!!!
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Old 13th October 2010, 04:30 AM   #17
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The EC11 can act as a button, so when you push it, channel changed; and when long press it(>1.5s), power off/on.
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Old 13th October 2010, 12:16 PM   #18
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Quote:
Originally Posted by genarocabrera View Post
Yes, definately you are Sony with disguise...!! What prototyping speed!!!
This project has stayed in my mind for a long time, so it comes seem fast
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Old 14th October 2010, 09:26 AM   #19
Havoc08 is offline Havoc08  Denmark
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Forgive my ignorance, but is there any reason noone uses the 8-channel volume chip ? CS3308/18 : High-Performance 8-Channel Analog Volume Control

For surround applications (which I presume many need) this chip seem optimal and more cost effective than a modular PGA 2310 solution or am I missing something?
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Old 15th October 2010, 05:21 AM   #20
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For DIY or a kit of parts, SMD is much harder for most people than through hole, and the chip is about $40 whereas I pay about $5.50 for a 2310.

It looks like an excellent choice though.
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