PLL IC LA3361 please explain

Hi all,

please explain the circuit in the attachment, titled, "Equivalent Circuit Block Diagram and Peripheral Circuit ", specially the pin titled "MPX IN" as well as how to make a PLL circuit to demodulate FM signals from this IC

Thanks

This device is not an FM demodulator, it's a stereo demodulator. You have to demodulate the FM signal before it reaches the LA3361 then feed the 'raw' audio into the "MPX IN" pin so the PLL can lock to the 19KHz pilot tone.

Brian.

please tell me any Phase Locked Loop (PLL) detector IC...need it for project.

LM565 (discontinued, but still on the market)

http://www.abuisbeih.puspc.com/cours...m_Lab/Exp8.pdf
http://www.personal.psu.edu/axl17/242l3.pdf