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Part Number: CC1200
I need to sync clock from a master over RF with an accuracy of +/- 1uS each 40mS. I also need to send a few bytes each time.
I was thinking to use a CC1200 in 1250kbps mode and use the low jitter data output for sync.
Range has to be 10 meters in direct line of sight.
Would this be possible?
In reply to TER:
Thank you for your answer.
I do not necessary need to sync time, just receiving a pulse every 40ms with 1us jitter max is sufficient. The syncing is done inside a microcontroller. I already did some experiments with the CC1200 and used the transparent data mode (low jitter serial data output as in the attached picture).
I notice a (constant) delay of 11.5us between transmitter and receiver. Jitter is about +/- 0.5uS. The constant delay is not much of a problem but I am wondering what's the cause of this. The jitter is just inside the margin, however is there anything I can do to minimize it further?
See attached scope picture for details. Blue line is transparent TX input into CC1200 #1 and yellow line is transparent RX output from CC1200 #2.
Thanks in advance!
In reply to IceCube:
Finally did some testing. The sync found signal is easy to use and I got +/- 250nS jitter @ 500Ksps. Selecting the CC1200 was a right choice :-)
Thanks for your help!
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