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AD9953 unused pin setting

Question asked by Jonnyjun Employee on Oct 14, 2016
Latest reply on Oct 17, 2016 by Jonnyjun

Hello,

 

I have some unused pins of AD9953. Can I have advice how to set these pins setting.

 

Here is unused pin of the design.

10pin - CRYSTAL_OUT

44pin - SYNC_IN

45pin - SYNC_CLK

47pin - PS0

48pin - PS1

 

CRYSTAL_OUT(10pin) and SYNC_CLK(45pin) are  output pins. So, it should be open.

Another is logic input, so I think it should be tied to GND due to 100k resister.

 

If my understanding is wrong, please would you give me your advice for each pin setting?? 

 

Thanks and best regards,

Jun

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