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ad9833 DDS and minimum phase shift step

Question asked by hungryforlearn on Apr 20, 2015
Latest reply on Apr 20, 2015 by LouijieC

Hi, All

 

What is the minimum  phase shift step I can use when my master clock is 8Mhz and  output clock  of my DDS is configured for

1Mhz.

 

I know the DAC of this DDS is only 10bits but  but using my oscilloscope  I can only phase shift my  clock output in 125ns intervals, which is one cycle of my master clock ( 8Mhz ).

 

is this all correct? This DDS is working right?    

I thought the phase shift was based on the formula :  phaseregister * (2pi/4095)

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