Datenblatt-Suchmaschine für elektronische Bauteile |
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TDA3867 Datenblatt(PDF) 8 Page - NXP Semiconductors |
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TDA3867 Datenblatt(HTML) 8 Page - NXP Semiconductors |
8 / 14 page January 1992 8 Philips Semiconductors Preliminary specification Quasi-split sound processor with two FM demodulators TDA3867T Limiting amplifiers (pins 18 and 22) Vi minimum input signal (RMS value) −3 dB AF signal − 300 450 µV maximum input signal (RMS value) 200 −− mV R18, 22 input resistance − 560 −Ω V18, 22 DC voltage − 0 − V Vi level detector threshold for no muting (RMS value, pin 22) only 5.74 MHz channel − 1 − mV ∆V i hysteresis of level detector − 5 − dB Tracking automatic frequency control (AFC) of the vision carrier reference circuit. Vo tracking output voltage range (pin 16) note 5 VP1−3.3 − VP1−1V FTR tracking reducing factor for black picture − 9 − white test picture − 4 − 50 % grey picture − 6 − S AFC steepness (open loop) for black picture −−8 − mV/kHz white test picture −−3 − mV/kHz 50 % grey picture −−5.5 − mV/kHz FM1 and FM2 demodulators Measurements with FM IF input signals of 5.5 MHz and 5.74 MHz with Vi IF (rms) = 10 mV (fmod = 1 kHz, deviation ∆f= ± 50 kHz) on pins 18 and 22 without ceramic filters, RS =50 Ω. De-emphasis of 50 µs and V5 =VP (B/G standard). QL−factor = 11 for resonant circuits at pins 7-8 and 11-12. VIC intercarrier signals (RMS values, pins 7-8 and 11-12) − 100 − mV VDC DC voltage (pins 7, 8, 11 and 12) − 1.8 − V Vo AF output signals (RMS values, pins 9 and 10) 0.75 0.95 1.20 V ∆Vo difference of AF signals between channels (pins 9 and 10) pin 6 open-circuit; note 2 −− 1dB R9, 10 output resistance − 100 −Ω V9, 10 DC voltage − 2.1 − V I9, 10 allowed AC current of emitter output (peak value) note 3 −− ±1.5 mA maximum allowed DC output current −− −2mA THD total harmonic distortion − 0.5 1.0 % Vo AF output signal (RMS value) THD = 1.5 % 1.25 −− V α AM AM suppression 1 kHz, m = 0.3 48 54 − dB S/N(W) weighted signal-to-noise ratio CCIR 468-3 64 68 − dB B AF bandwidth −3 dB 0.02 − 100 kHz αCR crosstalk attenuation (pins 9-10) 60 70 − dB V6 adjusting voltage for AF2 signal (pin 6) note 4 0 − 5V SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT |
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