Search FAQs on the left to see if your question has been answered. Click on the dropdown to view all of the documents associated with the product. If you can't find your question, click on Ask a Question

AD7725: FSK modulator

Do you have a solution for a simple FSK modulator/demodulateur (f1 25 Hz and
f2"25 Hz at 300 bauds) using AD7725 ?

 

The AD7725 cannot be used to directly demodulate. It samples the input and
provides a programmable digital filter into which you can load any
co-efficients. This allows the user to implement a band pass, high pass, low
pass, band stop filter, in fact you are only limited by the number of taps
available.

You can use the AD7725 to sample a spectrum and the process the signal further
in a DSP for example to extract the FSK information.

Alternatively you could consider a complete RF strip such as the AD607, AD608.
The AD607 has a built in PLL which is ideal for demodulating FSK. 
Comments
Anonymous
Related