Lock-in Amplifier Design

tzqqq

Lock-in Amplifier Design [Copy link]

I am a newbie, and I want to make a phase-locked amplifier with a reference signal frequency of 5MHz~7MHz. I have checked some information but still have no idea. Can any expert give me some advice?

shanghai6668

Lock-in Amplifier Design

gmchen

The phase-locked amplifier mainly consists of several modules: AC amplifier, phase-sensitive detector, DC amplifier, reference signal locking and phase shifting. The specific circuit and components should be designed according to the noise and sensitivity of the system. The reference signal frequency of your circuit is slightly higher, and the frequency response of the two channels must also be considered.

Asking for help in a forum will usually not get anyone to answer you. It is better to design a circuit and then ask others for suggestions, which is more effective.