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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?
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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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