Thank you very much. I bought another crystal because it was not possible to buy the original . My crystal need 18 pf. so I need the schematic to know wich capacitor to change.
I am not sure about the 24/192 sorry. I think it depends on the receiver chip anybody know ?
No, I don't have one ATM, sorry...
If you want a really good one, try Tentlabs. Their XO is a low-jitter device. And you can always use it later when you want to upgrade to The Flea
Joe:
www.exadevices.com $$$
http://www.diyaudio.com/forums/digital-source/185761-open-source-usb-interface-audio-widget.html
If you want a really good one, try Tentlabs. Their XO is a low-jitter device. And you can always use it later when you want to upgrade to The Flea
Joe:
www.exadevices.com $$$
http://www.diyaudio.com/forums/digital-source/185761-open-source-usb-interface-audio-widget.html
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No, I don't have one ATM, sorry...
If you want a really good one, try Tentlabs. Their XO is a low-jitter device. And you can always use it later when you want to upgrade to The Flea
Joe:
www.exadevices.com $$$
http://www.diyaudio.com/forums/digital-source/185761-open-source-usb-interface-audio-widget.html
OKI
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You'd be surprised how much influence a good clock has on the sound... A crappy clock signal with lots of jitter doesn't sound nice, you should do a comparison some time.
The Nokia-guy is partially right; but the supply and load cap are the only differences you can see from the OUTSIDE. Inside the can, they are a world of difference.
A crystal will not do much by itself, it is a passive part with two pins (or three, and then it is called a resonator) and needs an active oscillator-circuit to work. This can be a simple CMOS inverter, or a JFET circuit. Basically anything that amplifies. Very often, such CMOS inverters are already integrated in a DAC or receiver IC. The crystal is part of the oscillator circuit and determines the frequency.
A clock on the other hand, or oscillator-module, contains exactly all of the above inside the metal can, so it holds a crystal and the active circuit. It puts out a neat clock signal if you connect is to a power supply and is a ready-to-use device.
Ray
The Nokia-guy is partially right; but the supply and load cap are the only differences you can see from the OUTSIDE. Inside the can, they are a world of difference.
A crystal will not do much by itself, it is a passive part with two pins (or three, and then it is called a resonator) and needs an active oscillator-circuit to work. This can be a simple CMOS inverter, or a JFET circuit. Basically anything that amplifies. Very often, such CMOS inverters are already integrated in a DAC or receiver IC. The crystal is part of the oscillator circuit and determines the frequency.
A clock on the other hand, or oscillator-module, contains exactly all of the above inside the metal can, so it holds a crystal and the active circuit. It puts out a neat clock signal if you connect is to a power supply and is a ready-to-use device.
Ray
Thank you very much Ray . Nice homepage you have. I just bought the ACHL-24,576MHZ-EK from Mouser and I allready have a 3,3 V discret regulator.
I have built 3 more of the EZ dacs but the others with clocks from New Class D but I do not think they are good. Other clock I have used is XO XO2 and XO 3 from LC.Audio
I have built 3 more of the EZ dacs but the others with clocks from New Class D but I do not think they are good. Other clock I have used is XO XO2 and XO 3 from LC.Audio
Hi Erlend,
Thanks! Good to hear you like my page.
I don't have any experience with commercial clocks, because I build a Flea if I need one. But one thing I noticed: all these manufacturers speak of jitter and how bad it is and that their clock is x times lower, but I don't see any measurements anywhere. Where are the numbers? So it all depends on how low that jitter actually is in practice. A nice low-noise power supply or a shiny SMA connector won't help with that if the oscillator is bad.
I think the outputstage is a very nice sounding circuit. How are you going to do the I/V conversion?
Ray
Thanks! Good to hear you like my page.
I don't have any experience with commercial clocks, because I build a Flea if I need one
. But one thing I noticed: all these manufacturers speak of jitter and how bad it is and that their clock is x times lower, but I don't see any measurements anywhere. Where are the numbers? So it all depends on how low that jitter actually is in practice. A nice low-noise power supply or a shiny SMA connector won't help with that if the oscillator is bad.I think the outputstage is a very nice sounding circuit. How are you going to do the I/V conversion?
Ray
Hi Erlend,
Thanks! Good to hear you like my page.
I don't have any experience with commercial clocks, because I build a Flea if I need one
I think the outputstage is a very nice sounding circuit. How are you going to do the I/V conversion?
Ray
Passive I thought.
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