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AD831 IF mixing

Question asked by Christoph on Aug 29, 2014
Latest reply on Aug 29, 2014 by jdobler

Hello,

 

i would like to use the ad831 for mixing down my voltage signal to fix intermediate frequency of 10 kHz.

the voltage signal varies in frequency from 10 kHz to 10 MHz.

So the idea is to mix down my signal with a frequency of f_signal + 10 KHz and then filter the output with a low pass filter (corner frequency: about 20 kHz).

 

My questions:

1.) is it possible for the whole frequency range of my signal and does the ad831 work fine in this frequency ranges?

 

2.) is it possible to bypass the mixer, for example if i don't want to mix my signal (maybe possible by multipling with an dc value?)

 

3.) are there some reference designs available?

 

thanks a lot

best regards

christoph

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