Can clock input be shared?

Thread Starter

Seang

Joined May 21, 2020
14
I have a clock source inputting a fast ADC for data acquisition purposes. I am considering using two fast ADC's for parallel measurements, and am wondering if I can use the same clock source to split the input to both ADC's, or if it is advisable to just have two separate clock sources.
If I can use the same clock source, I will obtain the following benefits:
- Less power lines (critical to minimize this as much as possible)
- If clock source is shared between ADC's I can put them in two separate boxes and can be better isolated.
- Costs less.

Thanks in advance everyone!
 

crutschow

Joined Mar 14, 2008
25,117
If clock source is shared between ADC's I can put them in two separate boxes and can be better isolated.
Don't understand that statement.
How is that better than two separate clock sources, since that would give better isolation (what are you wanting to isolate?)
 

Alec_t

Joined Sep 17, 2013
11,400
Provided the two ADC clock inputs don't load the clock oscillator down too much it should be ok. Otherwise, buffering would be needed.
 
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