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FSK demod using LM565

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yasthicklee

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I am currently involved in a project and I am in need to demodulate the FSK modulated signals of carriers 12KHz and 20KHz.,Could anyone help to make in LM565??

I designed the same with center frequency 14KHz,But I am getting a -ve(-3.46V) volt for 14KHz and +ve(+4.46V) for other than 14khz.

I am in need to make 12khz signals as +ve volt and the 20khz to be -ve volt...

Help me to sort this out...:cry::cry:
Thanks in Advance!!
 

use just VCO function in 565
like fm demod: and envolope dettector(RC)
 

Sounds like an inappropriate circuit dimensioning with too small frequency range. According to the datasheet, you'll possibly have difficulties to make it lock to the full intended frequency range.
 

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