Dears,
I'm using LM2902 to realize the presicion rectifier circuit . But found when the input sine wave's operation frequency is higher than 8KHz, there has a distortion at the output side (point A).
And also the enevlope tracking circiut can not track the peak value, the voltage at point B is getting lowerr and lower when the operating frequency is getting higher. ? Could you recommended an Amplifier that has better performance than LM2902, and they are should pin to pin and easy to use, cost can be higher than LM2902, but not so expensive.
And by the way, could you help to review the circuit and point out some problem during the usage?
Helen