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Altera_Forum
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16 years ago

Output amplitute from an NCO

Am i right in thinking that the output amplitutde from the NCO is not constant over different frequencies?
Altera_Forum's avatar
Altera_Forum
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16 years ago

I previously missed some of the contributions in the thread, so my first post was somewhat behind the discussion. If you have e.g. 100 MHz DAC clock, the sinx/x effect is rather strong of course, and everything should be clear now. If you use the SLP-50 antialias filter, there's an additional 1 dB amplitude drop at 47 MHz.