GENERAL DESCRIPTION
The TDA9821 is a monolithic, integrated, TV FM intercarrier sound demodulator for all FM standards.
The circuit contains two separate FM demodulators using Phase Locked Loop (PLL) reference frequency
generation. The circuit requires a minimum number of external components.

FEATURES
• Two alignment-free PLL FM demodulators
• Automatic second sound carrier mute
• Mono and dual channel application
• Low power consumption
• Few external components required.