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Make Yourself USB DAC using BurrBrown PCM2902

Discuss Make Yourself USB DAC using BurrBrown PCM2902 at the DIY within the HiFiVision.com - Audio Video Hi-Fi Forum; Hi all , Here is a DIY schematic and PCB layout .The circuit is simple ...

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  #1  
Old 5th November 2008, 04:42 PM
 
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Make Yourself USB DAC using BurrBrown PCM2902


Hi all ,

Here is a DIY schematic and PCB layout .The circuit is simple and uses Burr-Brown PCM2902 .

Uses:
It is suitable for PC/laptop to AVR connection
or PC/laptop to Integrated amp using analog out.


All components are available at RS COMPONENTS INDIA : Welcome to RS On-line

DAC chip is about 650Rs .I suggest one should use better capacitors /resistors for smooth frequency response ....

Features:

INPUT ---> USB
OUTPUT -----> SPDIF
and Analog Out







collected from : Pavouk's homepage

Link :Click
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Old 5th November 2008, 06:50 PM
 
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Re: Make Yourself USB DAC using BurrBrown PCM2902

Hi Kaushik,

This is useful information. I liked your posts, which are always useful and cost effective. Keep it up.

Quote:
Originally Posted by kaushik View Post
Hi all ,

Here is a DIY schematic and PCB layout .The circuit is simple and uses Burr-Brown PCM2902 .

Uses:
It is suitable for PC/laptop to AVR connection
or PC/laptop to Integrated amp using analog out.


All components are available at RS COMPONENTS INDIA : Welcome to RS On-line

DAC chip is about 650Rs .I suggest one should use better capacitors /resistors for smooth frequency response ....

Features:

INPUT ---> USB
OUTPUT -----> SPDIF
and Analog Out







collected from : Pavouk's homepage

Link :Click
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  #3  
Old 7th November 2008, 05:52 PM
 
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Re: Make Yourself USB DAC using BurrBrown PCM2902

Thanks muthu... still more to come !
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  #4  
Old 17th December 2008, 05:50 PM
 
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Re: Make Yourself USB DAC using BurrBrown PCM2902

How much would it cost to get this PCB made to order in India?
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  #5  
Old 17th December 2008, 11:11 PM
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Re: Make Yourself USB DAC using BurrBrown PCM2902

Quote:
Originally Posted by Surrealistix View Post
How much would it cost to get this PCB made to order in India?
PCB is very cheap.
I got 3 inch*2 inch for Rs.5 only.If you ask to design,cost will increase.
I maid 5.1 switcher(input selecter) with it.
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  #6  
Old 18th December 2008, 09:16 AM
 
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Re: Make Yourself USB DAC using BurrBrown PCM2902

Yes PCB is cheap....however rs electronics prices are little high [approx30%]
For PCB there is OmElectronics in bangalore ...such small PCBs wil cost 5 to 10 Rs with green masking.

Else see my PCB making thread..u can make it at home......just a few supplies u need .
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Old 18th December 2008, 09:48 AM
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Arrow Re: Make Yourself USB DAC using BurrBrown PCM2902

Quote:
Originally Posted by kaushik View Post
Hi all ,

Here is a DIY schematic and PCB layout .The circuit is simple and uses Burr-Brown PCM2902 .

Uses:
It is suitable for PC/laptop to AVR connection
or PC/laptop to Integrated amp using analog out.


All components are available at RS COMPONENTS INDIA : Welcome to RS On-line

DAC chip is about 650Rs .I suggest one should use better capacitors /resistors for smooth frequency response ....

Features:

INPUT ---> USB
OUTPUT -----> SPDIF
and Analog Out







collected from : Pavouk's homepage

Link :Click
Thanks,

I have few Qs-

1.Does this require special driver to get recognized by Windows?
2.Where is Burr-Brown PCM2902 chip available?Mumbai?
3.Can we actualy develope ext DAC without USB?
ie.instead of usb we can set 5v adaptor connection & coax input in place of
USB data points?
4.Does it give stereo output?

check this also-http://www.pavouk.org/hw/spdifdac/en_index.html#circuit_description
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  #8  
Old 19th December 2008, 05:41 PM
 
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Re: Make Yourself USB DAC using BurrBrown PCM2902

Hello Mr.Kaushik ,

Very informative and i am in the process of making one for my computer ( not now , but some times later )

Thankyou
Vijay
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  #9  
Old 19th December 2008, 06:23 PM
 
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Re: Make Yourself USB DAC using BurrBrown PCM2902

Thank you cranky,

better DAC threads are welcome and your extertise will help the new DIY audiophiles .
actually i must admit here that the circuit is not yet being built by me [in the process of sourcing the components at a lesser price]

Due to component sourcing problems in india i wanted to post a DAC that was simple and uses less components .
As cranky said for top performance there are several mods may be needed .. external Power Supply,Ground Layout changes etc to name a few .
NOTE:PCB layout is not upto scale use these for actual size
PS file :http://www.pavouk.org/hw/usbdac/usbdacbrd.ps
or Eagle file :http://www.pavouk.org/hw/usbdac/usbdac2.brd

Let me check a solution for the 0.5mm track width issue ,as per my sources local PCBs minimum width is 1 mm....how about an IC socket....
update :my diy brain has come up with an idea,i will use an extension board as shown in the pic ....the board will make possible for a greater track spacing.


Vijay,
Forum is waiting for your DAC buit thread...
I am very glad that people are coming forward to build one of these .
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  #10  
Old 19th December 2008, 11:13 PM
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Re: Make Yourself USB DAC using BurrBrown PCM2902

Quote:
Originally Posted by kaushik View Post
Thank you cranky,

better DAC threads are welcome and your extertise will help the new DIY audiophiles .
actually i must admit here that the circuit is not yet being built by me [in the process of sourcing the components at a lesser price]

Due to component sourcing problems in india i wanted to post a DAC that was simple and uses less components .
As cranky said for top performance there are several mods may be needed .. external Power Supply,Ground Layout changes etc to name a few .

Let me check a solution for the 0.5mm track width issue ,as per my sources local PCBs minimum width is 1 mm....how about an IC socket....
update :my diy brain has come up with an idea,i will use an extension board as shown in the pic ....the board will make possible for a greater track spacing.


Vijay,
Forum is waiting for your DAC buit thread...
I am very glad that people are coming forward to build one of these .
I can tell you two ways to fit DAC-

1.RS online r providing IC/DAC sockets soldered on PCB which can be fitted
on PCB.
2.You can solder DAC on regular PCB & try to destroy PCB tracks inbetween
them with tools.


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