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Observer zhh839725969
Observer
3,227 Views
Registered: ‎05-31-2016

dds amplitude problem

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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!
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Xilinx Employee
Xilinx Employee
6,265 Views
Registered: ‎08-02-2011

Re: dds amplitude problem

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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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Xilinx Employee
Xilinx Employee
6,266 Views
Registered: ‎08-02-2011

Re: dds amplitude problem

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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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Explorer
Explorer
3,170 Views
Registered: ‎10-14-2015

Re: dds amplitude problem

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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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