|
DIY HiFi Forum Welcome! Need support, you got it. Or share your ideas and experiences. |
|
|
|
DIY HiFi Forum Welcome! Need support, you got it. Or share your ideas and experiences. |
|
In Reply to: Re: best DIY DAC posted by bcherry on January 7, 2005 at 19:01:54:
Hi,> How close does the PCM56 come to the TDA1541?
Pretty close. I susect something there but it's just a cute little theory. The PCM56 remains in product status current with TI and has two HUGE advantages over most other commonly used DAC's.
First it's in long current production. And second it offers a +/-1mA output current range with a specified I/V resistor of up to 1K. So you can get out of a Receiver and a pair of PCM56 in current output mode 2V Peak-Peak and you only need around 10db gain to get a normal 2V RMS output. Given the low cost and easy implementation maybe 4pcs PCM56 in parallel per channel would do a neat trick with improved linearity?
Or get REALLY, REALLY outrageous and use a pack of 16 PCM56 per channel with a simple 1:3 Stepup transformer to get 2V RMS with around 500 Ohm output impedance from nothing but the receiver, suitable digital bus buffers and 32pcs PCM56 plus two transformers. Only downside is the 32pcs PCM56 draw a cool 2A+ on the -5V rail and 1A+ on the positive rail, plus you really need fanout buffers for the receiver to drive all these inputs and all.
Still, might be crazy enough to really fly.
> What about PCM63-K?
As good if not better, bust costs a lot more without material benefits for a 16-Bit non-versampling DAC.
Ciao T
This post is made possible by the generous support of people like you and our sponsors:
Follow Ups
- Re: best DIY DAC - Thorsten 19:36:28 01/07/05 (0)
Top of Page ]
[ Contact Us ]
[ Support/Wish List ]
[ Copyright © 2024, Audio Asylum, all rights reserved ]
