AnsweredAssumed Answered

AD9910 BPSK generation shows spikes

Question asked by AdamM on Nov 24, 2015
Latest reply on Dec 26, 2015 by LouijieC

Hello

I am using a AD9910 evaluation board, to generate a BPSK modulated signal. The carrier frequency will be 100Khz. I have set profile 0 with 100Khz, o degrees phase, and Profile 1 with 100Khz, 180 degrees phase. i'm switching the phase by using pins "PROFILE [0,1], at a rate of approximately 83uS. The problem is that when I use a scope i see discontinuities. this is shown by amplitude spikes where phase  shifts occur.

I've tried changing the clock variables, but no luck.

Please help

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