didibabawu
Member level 5
I have a DAC taped out and test. The following is some of the test result. in the first one, the Fs=100MHz Fin=100k and the result is ok. In the second one, the Fs=125MHz Fin=100k and something is wrong with the DAC.
The capture instrument I used must work below 50MHz, so when I did my test, I reduced the capture frequency to Fs/M, and I used M=8. So when the Fs=100MHz, the capture freqency was 12.5MHz ,and 15.625MHz for 125MHz.
Can anyone give me some advise about my DAC. Thank you very much.
The capture instrument I used must work below 50MHz, so when I did my test, I reduced the capture frequency to Fs/M, and I used M=8. So when the Fs=100MHz, the capture freqency was 12.5MHz ,and 15.625MHz for 125MHz.
Can anyone give me some advise about my DAC. Thank you very much.