looking for a /5 clock divider

Vincenzo Pizzolante

Other Parts Discussed in Thread: CDCI6214, LMK03318, CDCE913

hi,

I have a clock signal 125MHZ single ended LVCMOS 3.3V at the input, and I need to divide it by 5 to generate 25MHz LVCMOS 1.8V at the output.

We could make this inside an FPGA however we are afraid of jitter generation, so we think to make it externally.

Any advice?

Thansk a lot in advance

Vincenzo

over 6 years ago

0 Lane Boyd over 6 years ago

TI__Genius 16845 points

Hi Vincenzo,

I checked our clock divider portfolio but there isn't a great fit here. Please consider CDCI6214.

Kind regards,
Lane

0 Vincenzo Pizzolante over 6 years ago in reply to Lane Boyd

TI__Mastermind 25866 points

hi Lane,

thanks, i dread that...

may you suggest a clock generator that can generated both 125 and 25MHz synchronized with low jitter?

thanks a lot in advance

Vincenzo

0 Vincenzo Pizzolante over 6 years ago in reply to Vincenzo Pizzolante

TI__Mastermind 25866 points

or even start from 25MHz clock and multiply it by 5x to get the 125MHz...

this should be more doable / easier to find...

would you agree?

any suggestion?

thanks a lot in advance

Vincenzo

0 Lane Boyd over 6 years ago in reply to Vincenzo Pizzolante

TI__Genius 16845 points

Hi Vincenzo,

I agree, multiplying will be easier. LMK03318 or CDCI6214 are a good fit for this application. CDCE913 could also work, but this device would have higher output jitter than the aforementioned devices.

Kind regards,
Lane

Clock & timing

Clock & timing forum

looking for a /5 clock divider