My CD Clock - the "Kwok Clock"

[vkinatsi]

Hello everybody!

I'm new in this forum, so forgive me for all my falses!!

I buy PLL1707 ,so i can produse a 27MHz clock from a crystal(27MHz)!
I think i do all the necessary connections but i take a 9MHz clock as output,in PINS MCKO2 or MCKO1.
Could you explain me why this happens,or what have i connect false?
My connections are:
FS1=1
FS2= 1
CSEL=0
SR=0

Thank you beforehands!

[kwokm]

In page 13 of the PLL1707 data sheet, FS1=1 and FS2=1 is not defined. Could it be the cause of your problem?

[Guido Tent]

Originally posted by kwokm
In fact this may be the lowest noise voltage regulator I know of, 20uVrms from 10Hz to 100kHz.

Comments are welcome, good or bad.

Hi,

The regulator is about 60nV/SqrrtHz, not bad, depending on power supply rejection it may be enough.

Honestly, the clock is way too complex. First you generate 27 MHz, then a synthesizer makes 11.2896. Keep it simple !

You may re-use the 11,2896 MHz crystal and build a standard Colpitts oscillator, with a simple style HC04 inverter as a slicer and end up way better than the clock you propose here.

best

[tubee]

I just opened 2 long 4 pin rectangular cristals, one is 33.8 Mhz (from a soundcard) and other is now zero Mhz, (i broke the small cristal itself!)
In it is a small cristall, suspended on 2 springs driving a smd 74HCU04 on a ceramic pcb. The other has a TI031X 301145 chip, couldn't find what chip it is.
Maybe its most simple to buy (or find from scrap) such a VCXO cristal and fit it in CDP with a decent PS. Most simple solution, but sound improvement?

Have a awfull 2000 ps jitter producing cheap DVD/VCR player, it needs a 27Mhz cristal (to Ziva 4.1 chip, the dvd mechanism uses a 33.8 Mhz cristal) Maybe i could try this. The Ziva would benefit most i think.