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TDA3856T Scheda tecnica(PDF) 7 Page - NXP Semiconductors |
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TDA3856T Scheda tecnica(HTML) 7 Page - NXP Semiconductors |
7 / 17 page June 1994 7 Philips Semiconductors Product specification Quasi-split sound processor for all standards TDA3856 VI DC potential, voltage (pins 1, 2, 23, 24) − 1.75 − V Vi IF (RMS) maximum input signal (RMS value) Vo = +1 dB 70 100 − mV input signal sensitivity B/G standard (RMS value, pins 32-24) −3 dB intercarrier signal reduction at pin 17 − 70 100 µV input signal sensitivity L standard (RMS value, pins 1-2) −3 dB intercarrier signal reduction at pin 9 − 70 100 µV V3 voltage for gain control (pin 3) 1.7 − 2.6 V ∆Gv IF gain control 60 63 − dB B IF bandwidth −3 dB 50 70 − MHz Resonance amplifier (pins 12-13) Vo (p-p) vision carrier amplitude (peak-to-peak value) fo = 38.9 MHz − 270 − mV R12-13 operating resistance − 4 − k Ω L inductance Figs 3 and 5 − 0.247 −µH C capacitance − 68 − pF QL Q-factor of resonant circuit Qo =90 − 40 − V12, 13 DC voltage (pins 12 and 13) − VP− 1 − V Intercarrier mixer output (pin 17) Vo (RMS) output signal for 5.5 MHz (RMS value) 71 95 125 mV output signal for 5.74 MHz (RMS value) 32 43 56 mV B IF bandwidth −1 dB 6 8.5 − MHz −3 dB 7 10 − MHz VVID/V17 residual video AM on intercarrier note 2 − 310 % VVC(RMS) residual vision carrier (RMS value) 1st/2nd harmonic (38.9/77.8 MHz) − 0.5 1 mV R17 output resistance (emitter follower) 1 mA emitter current − 30 −Ω Io allowable AC output current (pin 17) −− ±0.7 mA I17 allowable DC output current −− −2mA V17 DC voltage LC-circuit at pin 12, 13 adjusted to minimum video content at pin 17 1.5 1.75 2.0 V Limiting amplifiers (pins 15 and 19) Vi (RMS) minimum input signal (RMS value) −3 dB AF signal − 300 450 µV maximum input signal (RMS value) 200 −− mV R15, 19 input resistance 450 560 700 Ω V15, 19 DC voltage − 0 − V Vi (RMS) level detector threshold for no muting (RMS value, pin 19) only 5.74 MHz channel 0.8 1.2 1.7 mV ∆V i hysteresis of level detector 4 7 12 dB SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT |
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