Plz, comment my layout (D1 I/V)

vit · 23rd October 2004, 04:36 PM

Hi guys.
What's good, what could be better?

Trace width:16 mil
E-Caps: Panasonic FK
Caps: WIMA SMD

cheers // vit

digi01 · 25th October 2004, 06:06 AM

looks very professional.What is it used for doing?

A suggestion is to avoid the "T" type trace.

digi

vit · 26th October 2004, 08:49 PM

Hi and thanks digi01. The software I use is Eagle Layout Editor by Cadsoft .

till · 28th October 2004, 11:26 AM

some questions:

why do you use 390R instead of 1k5 at R27 ? do you think more voltage across the FET is better?

why do you use 10nF for C3? i think in the original this one would be the 2n7.

Do you use a less +-30V power supply? for the 3k3 resistors i think 1 or 2 watt type would be better.

very interested, Till

vit · 29th October 2004, 07:26 PM

Hi Till

I asked someone (can't remember who

) if I had to adjust something in the circuit for a higher output dac.
I will use PCM1794 wich have 4x higher output then PCM63.

edit:

Yes, the 3k3 resistor is 2W.
BTW...I will use your power supply

If you are intrested I'll send you my eagle-files

cheers // vit

25th October 2004, 06:06 AM	#2
digi01 diyAudio Member Join Date: Mar 2003 Location: BEIJING	looks very professional.What is it used for doing? A suggestion is to avoid the "T" type trace. digi __________________ 2010 DIY ALBUM UPDATED UCPv1(preamp) & DUAL(power supply)

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26th October 2004, 08:49 PM	#3
vit diyAudio Member Join Date: Feb 2003 Location: Stockholm	Hi and thanks digi01. The software I use is Eagle Layout Editor by Cadsoft .

28th October 2004, 11:26 AM	#4
till Banned Join Date: Apr 2002 Location: Germany, Clausthal	some questions: why do you use 390R instead of 1k5 at R27 ? do you think more voltage across the FET is better? why do you use 10nF for C3? i think in the original this one would be the 2n7. Do you use a less +-30V power supply? for the 3k3 resistors i think 1 or 2 watt type would be better. very interested, Till

29th October 2004, 07:26 PM	#5
vit diyAudio Member Join Date: Feb 2003 Location: Stockholm	Hi Till I asked someone (can't remember who ) if I had to adjust something in the circuit for a higher output dac. I will use PCM1794 wich have 4x higher output then PCM63. edit: Yes, the 3k3 resistor is 2W. BTW...I will use your power supply If you are intrested I'll send you my eagle-files cheers // vit

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