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TDA4650 Datasheet(PDF) 8 Page - NXP Semiconductors |
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TDA4650 Datasheet(HTML) 8 Page - NXP Semiconductors |
8 / 13 page March 1991 8 Philips Semiconductors Preliminary specification Multistandard colour decoder, with negative colour difference output signals TDA4650 Demodulator part (SECAM) (continued); note 1 ∆V1,3/∆VP shift of blanking levels relative to demodulated fo levels −− 3 mV/V ∆V 1/∆T − 0.16 − mV/K ∆V 3/∆T −−0.25 − mV/K Hue control part φ phase shift of reference carrier relative to phase at V17 =3V V17 =2V −30 −40 − deg phase shift of reference carrier V17 =3V − 0 ± 5 deg phase shift of reference carrier relative to phase at V17 =3V V17 = 4 V 30 40 − deg V17 internal bias voltage − 3 − V switching voltage for oscillator adjustment burst OFF; colour ON 0 − 0.5 V switching voltage for forced colour ON burst ON; colour ON 5.5 − VP V R17 input resistance 3.8 5.0 6.2 k Ω Reference oscillator (PLL); note 2 R19,21 input resistance − 350 −Ω C19,21 input resistance −− 10 pF fc catching range at 4.43 MHz ± 400 −− Hz at 3.57 MHz ± 330 −− Hz Identification part switching voltages for chrominance filters and crystals: at pin 28 for PAL at pin 27 for SECAM at pin 26 for NTSC (3.58 MHz) at pin 25 for NTSC (4.43 MHz) V28 to 25 switching voltages control voltage OFF state − 0.05 0.5 V control voltage ON state; during scanning 2.35 2.45 2.55 V control voltage ON state; internal forced 5.6 5.8 6.0 V control voltage ON state; external forced 9.0 - VP V I28 to 25 output currents −−−3mA td delay time for system hold 2 − 3 cycles delay time for colour ON 2 − 3 cycles delay time for colour OFF 0 − 1 cycles ts scanning time for each standard note 3 − 4 − cycles SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT |
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