TEA6821T Description
Stereo decoder Adjustment-free PLL-VCO TEA6821T Pilot depending mono/stereo switching Analog control of mono/stereo blend Adjacent channel noise suppression (114 kHz) Pilot canceller Analog control of de-emphasis Integrated low-pass filters for 190 kHz adjacent channel interferences and signal delay for interference absorption circuit. The TEA6821T together with the TEA6810T / TEA6811T forms an AM/FM electronic...
TEA6821T Key Features
- FM mixer for conversion from FM IF1 = 72.2 MHz to FM IF2 = 10.7 MHz
- AM mixer for conversion from AM IF1 = 10.7 MHz to AM IF2 = 450 kHz
- FM IF gain stage
- Crystal oscillator providing mixer frequencies and references for IF count and stereo decoder
- FM quadrature demodulator with automatic centre frequency adjust and THD pensation
- Level and multipath and noise detectors
- Soft mute
- Stereo noise cancelling and variable de-emphasis
- PLL stereo decoder
- Noise blanker