hi all,

i am trying to make an analog correlator. can anyone suggest me an analog multiplier ic that is compatible with LM355(555 timer) and LM741(op-amp).

furthermore, is it possible to use integrator over a PAM wave to get total area under all samples?

 

What is the purpose and required frequency response of this correlator.

 

it is just a part of our digital communication practical lab.
the signal input to the correlator will of about 200 hz