TDA7000 fm radio integrated circuit design

Posted on Feb 5, 2014

The TDA7000 has an FLL (Frequency-Locked-Loop) system with an intermediate frequency of 70 kHz and the selectivity is obtained by active RC filters. The only function which needs calibration  is the resonant circuit for the oscillator (for the reception frequency ). Using an integrated device like in this project in your FM radio can eliminate L

TDA7000 fm radio integrated circuit design
Click here to download the full size of the above Circuit.

C tuned circuits from the RF, IF, local oscillator and demodulator stages. A way to eliminate the coils in the IF and demodulator stages is to reduce the normally used intermediate frequency of 10. 7MHz to a frequency that can be tuned by active RC filters.

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