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TDA3858 Datasheet(PDF) 7 Page - NXP Semiconductors |
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TDA3858 Datasheet(HTML) 7 Page - NXP Semiconductors |
7 / 17 page June 1994 7 Philips Semiconductors Product specification Quasi-split sound processor for all standards TDA3858 CHARACTERISTICS VP = 5 V (pin 27) and Tamb = +25 °C; measurements taken in Fig.3 with fVC = 38.9 MHz, fSC1 = 33.4 MHz and fSC2 = 33.158 MHz. Vision carrier (VC) modulated with different video signals, modulation depth 100% (proportional to 10% residual carrier). Vision carrier amplitude (RMS value) Vi VC = 10 mV; vision to sound carrier ratios are VC/SC1 = 13 dB and VC/SC2 = 20 dB. Sound carriers (SC1, SC2) modulated with f = 1 kHz and deviation ∆f = 50 kHz, unless otherwise specified. SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT VP1 supply voltage (pin 27) pin 28 not connected 4.5 5 8.8 V VP2 supply voltage (pin 28) pin 27 not connected 10.8 12 13.2 V IP1 supply current (pin 27) VP1 =5 V 48 60 72 mA IF source control (pin 6) V6 input voltage in order to obtain standards B/G (FM) with automatic muting pin 6 connected 2.8 − VP1 V pin 6 open-circuit − 2.8 − V B/G (FM) without muting pin 6 connected or alternative measure: 22 k Ω to GND 1.3 − 2.3 V L(AM sound) pin 6 connected 0 − 0.8 V I6 input current V6 = VP1 −− 100 µA V6 =0 V −− −300 µA V6(12 V) maximum input voltage (pin 6) supply at pin 28 −− 5.5 V IF input not activated (pins 1-2 or 31-32) RI input resistance −− 100 Ω VI DC input voltage (pins 1, 2 or 31, 32) LOW set internally −− 0.1 V α 16-17 crosstalk attenuation of IF input switch note 1 50 56 − dB IF amplifier (pins 1-2 or 31-32) RI input resistance 1.8 2.2 − k Ω CI input capacitance − 2.0 2.6 pF VI DC potential, voltage (pins 1, 2, 31, 32) − 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 31-32) −3 dB intercarrier signal reduction at pin 23 − 70 100 µV input signal sensitivity L standard (RMS value, pin 1-2) −3 dB intercarrier signal reduction at pin 11 − 70 100 µV |
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