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TEA6821T

NXP
Part Number TEA6821T
Manufacturer NXP
Description ICE car radio
Published Apr 16, 2005
Detailed Description INTEGRATED CIRCUITS DATA SHEET TEA6821T ICE car radio Preliminary specification File under Integrated Circuits, IC01 Se...
Datasheet PDF File TEA6821T PDF File

TEA6821T
TEA6821T

Overview
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-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 tuned car radio in a double conversion receiver concept for European, American and Japanese frequency ra...


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