TEA6821T

INTEGRATED CIRCUITS DATA SHEET TEA6821T ICE car radio Preliminary specification File under Integrated Circuits, IC01 September 1993 Philips Semiconductors Preliminary specification ICE car radio FEATURES General 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 compensation Level and multipath and noise detectors Soft mute Stereo noise cancelling and variable de-emphasis PLL stereo decoder Noise blanker AM IF amplifier and demodulator I2C-bus transceiver IF count for AM and FM Reference frequency generation for PLL synthesizer Reduced external components SW applicable. QUICK REFERENCE DATA SYMBOL Vs1 Vs1 Is1 Is1 Vs2 Vs2 Is2 Is2 S+N/N THD S+N/N THD α Tamb PARAMETER supply voltage 1 (pins 56 and 28) operating range supply current 1 FM supply current 1 AM supply voltage 2 (pin 5) operating range supply current 2 FM supply current 2 AM signal-to-noise AM distortion AM signal-to-noise FM distortion FM channel separation (adjusted) operating ambient temperature ∆f = 75 kHz m = 0.3 note 1 note 1 CONDITIONS MIN. 7 8.1 − − 4.5 4.75 − − − − ∆f = 22.5 kHz at pins 43 and 47 66 − 40 −40 TYP. 8.5 8.5 28 24 5.0 5.0 31 28 57 1 72 0.1 − − GENERAL DESCRIPTION Stereo decoder Adjustment-free PLL...