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DDS Mult-Chip Sync sensitivity to temperature

Question asked by mikaelis on Nov 12, 2014
Latest reply on Nov 12, 2014 by DSB

Hi

 

is there any experience with the Multi-Chip Sync feature on the AD9914 or AD9915 concerning the temperature of the chips?

Does the phasing of the internal DDS clocks change heavily with temperature?

 

The reason I'm asking this is that I notice Phase 'jumps' between DDS-Output Signals that I like to have synchronized when I observe them long enough (let's say several minutes on infinite persistence).

I'm strongly interested in synchronizing multiple chips after power cycles ... This means that my system is often switched off, then back on again. Do temperature fluctuations impact the sync meachanism strongly?

 

Best Regards,

MK

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