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About DAT frequency translation

Question asked by Jimmy39 on Nov 20, 2011
Latest reply on Dec 2, 2011 by larrywelchusa

Hi

 

i'm thinking the system where IF frequency translation occurs using one Dual DAC chip.

and the following is what i'm thinking.

 

 

input 1 :  100M update rate, 25M IF real data --->  port 1 of Dual DAC    --->  75M IF output

 

input 2 :  100M update rate, 25M IF real data --->  port 2 of Dual DAC    --->  75M IF output

 

is it possible ?

i'm thinking i need to use NCO and multipling to IF data but in DAC datasheet there's only option of

real mixer/ complex mixer.  and i'm gessing both cases use  2 data set like i data and q data.

 

are there another way of multipling 1 data (IF data) with NCO clock ?

 

and i'm thinking of AD9788/AD9125 DAC chip.

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