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Observer
Posts: 16
Registered: ‎05-31-2016
Accepted Solution

dds amplitude problem

hello everyone,I have a problem.When I design the DDS IP CORE,I do not know how to creat different amplitude of sin waves.Usually I could creat the same amplitude but different frequency sin wave to be superimposed.However,I do not know how to achieve amplitude control.And what is the function of SFDR? Thank you!

Accepted Solutions
Xilinx Employee
Posts: 3,670
Registered: ‎08-02-2011

Re: dds amplitude problem

Hello,

 

You don't control the amplitude in the IP core itself. You'd use a multiplier on the output to scale it appropriately.

www.xilinx.com

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All Replies
Xilinx Employee
Posts: 3,670
Registered: ‎08-02-2011

Re: dds amplitude problem

Hello,

 

You don't control the amplitude in the IP core itself. You'd use a multiplier on the output to scale it appropriately.

www.xilinx.com
Explorer
Posts: 229
Registered: ‎10-14-2015

Re: dds amplitude problem

Hi @zhh839725969,,

 

Please check page 11 for changing the amplitude.

 

https://www.xilinx.com/support/documentation/ip_documentation/dds_compiler/v6_0/pg141-dds-compiler.pdf

 

Thanks,
Sarada

 

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