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TEA6821T Arkusz danych(PDF) 2 Page - NXP Semiconductors |
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TEA6821T Arkusz danych(HTML) 2 Page - NXP Semiconductors |
2 / 47 page September 1993 2 Philips Semiconductors Preliminary specification ICE car radio TEA6821T 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. Stereo decoder • Adjustment-free PLL-VCO • 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. GENERAL DESCRIPTION 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 range. QUICK REFERENCE DATA Note to the quick reference data 1. IC is functional, specified parameters may deviate from limits which are valid for operating range. SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT Vs1 supply voltage 1 (pins 56 and 28) note 1 7 8.5 10 V Vs1 operating range 8.1 8.5 8.9 V Is1 supply current 1 FM − 28 − mA Is1 supply current 1 AM − 24 − mA Vs2 supply voltage 2 (pin 5) note 1 4.5 5.0 5.5 V Vs2 operating range 4.75 5.0 5.25 V Is2 supply current 2 FM − 31 − mA Is2 supply current 2 AM − 28 − mA S +N/N signal-to-noise AM m = 0.3 − 57 − dB THD distortion AM − 12% S +N/N signal-to-noise FM ∆f = 22.5 kHz at pins 43 and 47 66 72 − dB THD distortion FM ∆f = 75 kHz − 0.1 0.35 % α channel separation (adjusted) 40 −− dB Tamb operating ambient temperature −40 − +85 °C |
Podobny numer części - TEA6821T |
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Podobny opis - TEA6821T |
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