New DAC project 24/96/192 wanted features - Page 3

peranders · 28th September 2002, 07:17 PM

Quote:

Originally posted by HarryHaller
Yes like 0.1 nanovolts perhaps.............

Harry, you complained about my low information value postings. Could you do the same for me in my threads, please?

I was wondering about SPDIF and TOSLINK. How high sampling frequency can this optical link transfer? Can it take 192 kSp? Isn't the frequency 4 times the bit rate (biphase coding)?

I haven't tested myself yet but someone already know I'll be happy to hear more about it.

GGrand · 28th September 2002, 07:49 PM

"I was wondering about SPDIF and TOSLINK. How high sampling frequency can this optical link transfer? Can it take 192 kSp? Isn't the frequency 4 times the bit rate (biphase coding)?"

Yes

This will work fine.

Seems that H.H. is in a bit of a snit and I don't see much useful from him as of late. I plan to ignore the pompous *** myself as I find him extremly off putting.

Guy

jwb · 28th September 2002, 09:04 PM

Really? The datasheet for TORX173 states a maximum data rate of 6Mbps, which would be fine for stereo 24/96 but not enough for stereo 24/192.

peranders · 28th September 2002, 09:47 PM

It wise to have the datasheets as normal limits but sometimes they aren't true. TOSLINK works to at least 30 meters (100 feet). I have tested it myself. Datasheet says 10.

As a pro it's a death sin to use parts over the limits. You can get into trouble if you assume that parameters are typical instead of min-max. If you still uses parts beyond their limits, it's a calculated risk.

What about transmission links for 192 kSp? What do we have?

GGrand · 28th September 2002, 09:48 PM

The Data Sheet is much too conservative. It have built several of these interfaces and they worked splendidly with very low jitter, vanishy low data errors, and extremely good sonics.

What did you say your professional and educational background was? I didn't wish to confuse you in any further disscussions and would like to try to keep the technical disscussions at your level if possible so as to explain any questions that might arise if I am able to make myself understood to someone with your background.

Guy

jwb · 28th September 2002, 10:55 PM

Here's a bog-standard implementation of the CS43122, being fed a 24/96 signal from a CS8420. The outputs from CS43122 feed FET buffers with active loads. If anyone has a suggestion for a lower distortion FET, I'm listening.

Schematic

I omitted the input and output circuitry, as everyone has different tastes. My inputs will be an optical receiver, coax S/PDIF, and AES/EBU coupled with pulse transformers and switched in with relays. The outputs are coupled through 10µF polypropylene capacitors to XLR and RCA connectors.

theodorecleaver · 28th September 2002, 11:08 PM

Should work great as shown. I can't think of a thing I would change.

The Beav

theodorecleaver · 28th September 2002, 11:11 PM

A very small risk that is usually irelevent in a one off build. He is not going to build a thousand of these after all.

fcel · 28th September 2002, 11:23 PM

Peranders,
Your signature says check out your home page but I don't see any web link. What happen to it?

Jocko Homo · 29th September 2002, 06:00 AM

Don't include me in your personal grudge match, or make erroneous assumptions..........

$300 USD for a no-holds-barred DAC? Give me a break, pal. No way, no how. Crap parts, and crap design equal crap sound.......and $$ for some middleman.

Sounds like extreme crap to me.

Jocko

28th September 2002, 07:49 PM	#22
GGrand Banned Join Date: Sep 2002 Location: UK	SPDIF and TOSLINK "I was wondering about SPDIF and TOSLINK. How high sampling frequency can this optical link transfer? Can it take 192 kSp? Isn't the frequency 4 times the bit rate (biphase coding)?" Yes This will work fine. Seems that H.H. is in a bit of a snit and I don't see much useful from him as of late. I plan to ignore the pompous *** myself as I find him extremly off putting. Guy

28th September 2002, 09:47 PM	#24
peranders Electrons are yellow and more is better! diyAudio Member Join Date: Apr 2002 Location: Göteborg, Sweden Blog Entries: 4	It wise to have the datasheets as normal limits but sometimes they aren't true. TOSLINK works to at least 30 meters (100 feet). I have tested it myself. Datasheet says 10. As a pro it's a death sin to use parts over the limits. You can get into trouble if you assume that parameters are typical instead of min-max. If you still uses parts beyond their limits, it's a calculated risk. What about transmission links for 192 kSp? What do we have? __________________ /Per-Anders (my first name) or P-A as my friends call me Tube Buffered Gainclone in work \|Thread

28th September 2002, 09:48 PM	#25
GGrand Banned Join Date: Sep 2002 Location: UK	maximum data rate of 6Mbps The Data Sheet is much too conservative. It have built several of these interfaces and they worked splendidly with very low jitter, vanishy low data errors, and extremely good sonics. What did you say your professional and educational background was? I didn't wish to confuse you in any further disscussions and would like to try to keep the technical disscussions at your level if possible so as to explain any questions that might arise if I am able to make myself understood to someone with your background. Guy

28th September 2002, 11:08 PM	#27
theodorecleaver Banned Join Date: Sep 2002 Location: gone	Here's a bog-standard implementation of the CS43122 Should work great as shown. I can't think of a thing I would change. The Beav

28th September 2002, 11:11 PM	#28
theodorecleaver Banned Join Date: Sep 2002 Location: gone	If you still uses parts beyond their limits, it's a calculated risk. A very small risk that is usually irelevent in a one off build. He is not going to build a thousand of these after all.


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28th September 2002, 09:04 PM	#23
jwb diyAudio Member Join Date: Mar 2002 Location: San Francisco, USA	Really? The datasheet for TORX173 states a maximum data rate of 6Mbps, which would be fine for stereo 24/96 but not enough for stereo 24/192.

28th September 2002, 10:55 PM	#26
jwb diyAudio Member Join Date: Mar 2002 Location: San Francisco, USA	Here's a bog-standard implementation of the CS43122, being fed a 24/96 signal from a CS8420. The outputs from CS43122 feed FET buffers with active loads. If anyone has a suggestion for a lower distortion FET, I'm listening. Schematic I omitted the input and output circuitry, as everyone has different tastes. My inputs will be an optical receiver, coax S/PDIF, and AES/EBU coupled with pulse transformers and switched in with relays. The outputs are coupled through 10µF polypropylene capacitors to XLR and RCA connectors.

28th September 2002, 11:23 PM	#29
fcel diyAudio Member Join Date: Sep 2001 Location: LA County	signature web link Peranders, Your signature says check out your home page but I don't see any web link. What happen to it?

29th September 2002, 06:00 AM	#30
Jocko Homo Banned Join Date: Feb 2002 Location: As far from the NOSsers as possible	"Even Jocko Homo and Steve Eddy are nice guys these days." Don't include me in your personal grudge match, or make erroneous assumptions.......... $300 USD for a no-holds-barred DAC? Give me a break, pal. No way, no how. Crap parts, and crap design equal crap sound.......and $$ for some middleman. Sounds like extreme crap to me. Jocko

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