AnsweredAssumed Answered

AD8302 Phase Error Measurement

Question asked by zhang13579 on Nov 24, 2015
Latest reply on Dec 2, 2015 by zhang13579

Hi everybody,

   Recently I have set up a circuit to detect the phase error between the two signal,but no matter how I change the phase error of the input signal,the voltage of Vphs pin is constant about 0.9V rather than a linear change,I'd like to know what happened.

   The basic condition of my circuit is as follows:

11.png

    C1=C4=C5=C6=10uF,C2=C8=1uF,C3=100pF,C7=0.1uF,R1=R2=52.3Ohms.

    The frequency of input signal is 500Hz,Vpp of the two sine signal is 10V

    Thank you very much for your help!

Outcomes