External clock to CD-PRO2

[tone]

joeling39
Hi,
where did u bought the CDPRO2 from? locally or directly from daisy? and how much? i have lost ur email address..pls email me offline..thanks.

tone.

[LC Audio]

I am sorry Elso and Guido

The reason why the SAA7324 fail with your clocks is this:

Your clocks give out a 5 V signal but the SAA7324 is a 3.3 V chip. (Absolute maximum rating for input signals are: 3.6 V)... (See datasheet from above link).

This and other 3.3V chips will be destroyed with the KWAK clock even if correctly mounted........
And there is really no way of attenuating the clock signal without degrading the jitter performance on this type of standard CMOS oscillator.

Good luck guys .. ;o)

[tbla]

on this type of standard CMOS oscillator

i believe we have a conflict of interest........

"when correctly built and mounted - the kwakclock sounds better than the lcaudio xo2 clock"......

[Elso Kwak]

Hi Lcaudio,
Don't be sorry, thanks for the hint.
May I suggest using the KWAK-CLOCK in this particular case with +/-3.3V supplies? This can simply be done by changing two resistors:
Make R5 8k66 and R8 12k. All other values remain the same. Best check the supply voltages before connecting the clock to this sensitive chip.
Except the one failure in this thread, possibly due to connecting a clock to pin 17 instead of pin 16, I have never heard of any failures.

[Elso Kwak]

Originally posted by tbla


i believe we have a conflict of interest........

"when correctly built and mounted - the kwakclock sounds better than the lcaudio xo2 clock"......

Yes Troels,
The KWAK-CLOCK is NOT a standard CMOS oscillator!

[LC Audio]

Not a very surprising statement coming from you

[Elso Kwak]

Originally posted by LC Audio
Not a very surprising statement coming from you

Hi Lcaudio,
It is a fact: there is no CMOS oscillator in my clock!!




999 posts, I can't believe it myself

[LC Audio]

Sorry i was a little fast on the trigger. You are right!

I confused your clock for another design sent to me a few days ago, and that one was just a simple CMOS can on a PCB. I will check it's name and post here later.

I searched the web for your design, and it seems to be OK.

[tbla]

[Guido Tent]

Originally posted by LC Audio
I am sorry Elso and Guido

The reason why the SAA7324 fail with your clocks is this:

Your clocks give out a 5 V signal but the SAA7324 is a 3.3 V chip. (Absolute maximum rating for input signals are: 3.6 V)... (See datasheet from above link).

This and other 3.3V chips will be destroyed with the KWAK clock even if correctly mounted........
And there is really no way of attenuating the clock signal without degrading the jitter performance on this type of standard CMOS oscillator.

Good luck guys .. ;o)

Oh, I never got into this part of the discussion. Ofcourse a 3V3 circuit should be fed with a 3V3 clock......

Destroyed: I doubt, at least, when series resistance is used (what i do) as the clock input very likely has ESD protection diodes, able to handle 10mA, if my memory serves me right (I think that chip was still made in Philips C075 process)

Anyhow, we should respect the voltages

thanks