Need schematic for frequency divider

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alapri

Member
Joined 2019
Hello everyone :wave2:



I'm novice in the audio modding, but I have soldering experience.
And I want to make a audio reclocker for my Raspberry Pi 4 model B.
For this project I have two precession quartz oscillators (45..M/49..M) covering both audio frequencies.
Mainly problem is low jitter frequency divider.
Easy way is using divider by FPGA, but this not better solution, not my way.
I want to make better divider, that based on the logical microchips.
Dear community guys, how you do about my idea and can you do help me choose better divider schematic?
 
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Mark Tillotson

Member
Joined 2018
For 49MHz your options are limited to only the fastest logic families, or specialized clock-divider chips. Attention to trace impedance and preventing signal reflections and ringing will give best results.


75LVC163 4 bit counter will give you divide by 2, 4, 8 or 16, clocks upto 120MHz or so, 3.3V logic note.
 
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