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AD9914 Ramp Generator and Output Power

Question asked by cdean2013 on Feb 4, 2013
Latest reply on Feb 7, 2013 by DSB

Two questions about the AD9914. 

 

1.) What is the nominal output power of the device? I see that the output amplitude is controllable, which should then in turn control the output power in a 50ohm system correct? 

 

2.) My system would have the DDS producing a frequency sweep, go through our sensor, and into the AD8302 producing a DC voltage from 0-1.8V.  I want to be able to use the DRG in the DDS, but I was thinking that there would need to be some kind of syncing between when the DDS changes frequency, and when the ADC makes a reading. I'm trying to follow a changing resonance of our sensor, so it's important to know where the AD8302 output data lines up with frequency input.

Is this possible? Or would I need to write a single tone, record the ADC, write another single tone..repeat.  The reason I didn't want to do that was because faster=better (of course).

 

Thanks.

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