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INTEGRATED CIRCUITS DATA SHEET TDA4651 Multistandard colour decoder with negative colour difference output signals Preliminary specification File under Integrated Circuits, IC02 August 1993 Philips Semiconductors Preliminary specification Multistandard colour decoder with negative colour difference output signals FEATURES Identifies and demodulates PAL, SECAM, NTSC 3.58 and NTSC 4.43 chrominance signals with: · Gain controlled chrominance amplifier · ACC demodulation controlled by system scanning · Internal colour difference signal output filters to remove the residual subcarrier · PAL / NTSC demodulation ­ H (burst) and V blanking ­ PAL switch (disabled for NTSC) ­ NTSC phase shift (disabled for PAL) ­ PLL-controlled reference oscillator ­ two reference oscillator crystals on separate pins with automatic switching ­ quadrature demodulator with subcarrier reference · SECAM demodulation ­ limiter amplifier ­ quadrature demodulator with a single external reference tuned circuit ­ alternate line blanking, H and V blanking ­ de-emphasis · Identification ­ automatic standard identification by sequential inquiry ­ secure SECAM identification at 50 Hz only, with PAL priority ­ four switched outputs for chrominance filter selection and display control ­ external service switch for oscillator adjustment ORDERING INFORMATION PACKAGE EXTENDED TYPE NUMBER TDA4651 TDA4651WP Note 1. SOT117-1; 1996 November 25. 2. SOT261-2; 1996 November 25. PINS 28 28 PIN POSITION DIL PLCC MATERIAL plastic plastic V3(p-p) V1(p-p) IP Vi(p-p) GENERAL DESCRIPTION TDA4651 The TDA4651 is a monolithic integrated multistandard colour decoder for PAL, SECAM and NTSC (3.58 and 4.43 MHz) with negative colour difference output signals. The colour difference output signals are fed to the TDA4661, switched capacitor delay line. QUICK REFERENCE DATA SYMBOL VP PARAMETER positive supply voltage (pin 13) supply current (pin 13) chrominance input voltage (pin 15) (peak-to-peak value) -(R-Y) output (peak-to-peak value) -(B-Y) output (peak-to-peak value) see note 1 CONDITIONS MIN. 10.8 TYP. 12 MAX. 13.2 UNIT V - 20 60 200 - 400 mA mV Colour difference output signals (see note 2) PAL NTSC SECAM PAL NTSC SECAM 442 370 883 559 468 1119 525 440 665 557 624 523 791 662 mV mV mV mV mV mV 1050 1248 1330 1581 Notes to quick reference data 1. Within 3 dB output voltage deviation. 2. Burst key width for PAL 4.3 µs, for NTSC 3.6 µs Burst width for PAL and NTSC 2.25 µs, ratio burst-chrominance-amplitude 1/2.2. CODE SOT117(1) SOT261CG(2) August 1993 2 Philips Semiconductors Preliminary specification Multistandard colour decoder with negative colour difference output signals TDA4651 August 1993 3 Fig.1 Block diagram. Philips Semiconductors Preliminary specification Multistandard colour decoder with negative colour difference output signals PINNING SYMBOL -(R-Y)o -(R-Y)DE -(B-Y)o -(B-Y)DE -(B-Y)CL -(R-Y)CL SECREF PIN 1 2 3 4 5 6 7 8 9 10 GND CHR2 VP CDC 11 12 13 14 ground DC for ACC