AD9851 output amplitude

Jun 05, 2017 23 Replies

Jan Panteltje wrote on 6/6/2017 4:40 AM:

Actually I have a pretty keen sense of humor... when I see it. Besides, you criticized him for his grammar and yours is *always* atrocious, not to mention your spelling.

Rick C

Jan Panteltje wrote on 6/6/2017 4:44 AM:

Sir, you are one weird dude!

Rick C

I don't think I understand the sinc thing. What should I expect to see from it?

The AD9854 has an inverse sinc filter, from p30 of the data sheet:

"Both DACs are preceded by inverse sin(x)/x filters (also called inverse sinc filters) that precompensate for DAC output amplitude variations over frequency to achieve flat amplitude response from dc to Nyquist."

It uses a whole watt, so has a separate power-down control.

Clifford Heath.

Never mind, I found an explanation here: It doesn't explain my problem, but that's ok.

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