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AD9910-Synchronization

Question asked by meir.alon@weizmann.ac.il on Nov 22, 2015
Latest reply on Dec 3, 2015 by KennyG

Hello Everyone

 

I am Synchronizing 4 DDS of AD9910, and i would like to know some details.

i read that the I/O  Update needs to be synchronized with the Sync Clock.

Is it necessary to take all the 4 Sync Clocks and use Flip Flop to latch them with there I/O UPDATE

or it is enough to Latch it with the Master Sync Clk ?. is it necessary to latch at all ?.

today i use one dds and don't latch it and it works good.

and another Question concerning SPI:

i am using arduino to transfer the data and i want to take the spi output of the arduino to all the 4 DDS

you think that one output can handle the 4 dds inputs ? is it necessary to add buffers?

 

 

Thank You

Meir

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