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TEA6824 Arkusz danych(PDF) 9 Page - NXP Semiconductors |
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TEA6824 Arkusz danych(HTML) 9 Page - NXP Semiconductors |
9 / 36 page 1997 May 05 9 Philips Semiconductors Preliminary specification In Car Entertainment (ICE) car radio TEA6824T FM demodulator V43-4(rms) MPX output voltage between pins 43 and 4 (RMS value) 160 200 240 mV V37-35(rms) start of limiting voltage between pins 37 and 35 (RMS value) αAF = −3dB − 25 40 µV V37-35(rms) input voltage for signal plus noise-to-noise ratio (RMS value) see Fig.6; − 30 45 µV − 70 100 µV ∆V 43DC residual DC-offset voltage pin 43 ∆Ldemod = typical value; 10 µV<V 37-35 <80 µV − 100 1000 mV 80 µV<V 37-35 < 800 mV − 10 30 mV V43FM/V43AM AM suppression pin 43 ∆f = 22.5 kHz; fmodAM = 1 kHz; mAM = 30%; V37-35 = 3 to 300 mV 50 60 − dB ∆V 43-44AFCdis / ∆V43-44AFCactive demodulator frequency control voltage (AFC) efficiency between pins 43 and 44 at 100 kHz detune from exact tuning 28 32 − dB Ro43 output resistance pin 43 −− 1.5 k Ω B43 AF bandwidth pin 43 200 −− kHz signal plus noise-to-noise ratio 66 75 − dB THD total harmonic distortion at pin 43 detuning ≤50 kHz; ∆f = 75 kHz; fmod = 1 kHz without de-emphasis; Ldemod = typical value; V37-35 = 300 µV to 800 mV − 0.1 0.35 % SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT SN + N -------------- 26 dB = SN + N -------------- 46 dB = SN + N -------------- |
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