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INTEGRATED CIRCUITS DATA SHEET TDA4557 Multistandard decoder Product specification File under Integrated Circuits, IC02 March 1991 Philips Semiconductors Product specification Multistandard decoder GENERAL DESCRIPTION The TDA4557 is a monolithic integrated multistandard colour decoder for the PAL, SECAM, NTSC 3.58 MHz and NTSC 4.43 MHz standards. FEATURES Chrominance part · Gain controlled chrominance amplifier for PAL, SECAM and NTSC · ACC rectifier circuits (PAL/NTSC, SECAM) · Burst blanking (PAL) in front of 64 µs glass delay line · Chrominance output stage for driving the 64 µs glass delay line (PAL, SECAM) · Limiter stages for direct and delayed SECAM signal · SECAM permutator Demodulator part · Flyback blanking incorporated in the demodulators (PAL, NTSC, SECAM) · PAL switch · Internal PAL matrix QUICK REFERENCE DATA PARAMETER Supply voltage (pin 13) Supply current (pin 13) Chrominance input voltage (peak-to-peak value) Chrominance output voltage (peak-to-peak value) Colour difference output voltages (peak-to-peak values) -(R-Y) -(B-Y) Sandcastle pulse (pin 24) Required amplitude to separate vertical and horizontal pulse horizontal pulse burst gating pulse PACKAGE OUTLINE 28-lead DIL; plastic (SOT117); SOT117-1; 1996 November 27. March 1991 2 V24(p-p) V24(p-p) V24(p-p) 2.0 4.1 7.7 2.5 4.5 - V1(p-p) V3(p-p) - - 1.05 V ± 2 dB 1.33 V ± 2 dB - - V12(p-p) - 1.6 - V15(p-p) 20 100 IP SYMBOL VP MIN. 10.8 - 12.0 65 TYP. - TDA4557 · Two quadrature demodulators with external reference tuned circuits (SECAM) · Internal filtering of residual carrier · De-emphasis (SECAM) Identification part · Automatic standard recognition by sequential inquiry · Delay for colour-on and scanning-on · Reliable SECAM identification by PAL priority circuit and 50/60 Hz recognition · Forced switch-on of a standard · Four switching voltages for chrominance filters, traps and crystals · Two identification circuits for PAL/SECAM (H/2) and NTSC · PAL/SECAM flip-flop · SECAM identification mode switch (horizontal, vertical or combined horizontal and vertical) · Crystal oscillator with divider stages and PLL circuitry (PAL, NTSC) for double colour subcarrier frequency · HUE control (NTSC) · Service switch MAX. 13.2 UNIT V mA mV V 400 V V 3.0 4.9 VP V V V Philips Semiconductors Product specification Multistandard decoder TDA4557 March 1991 3 Fig.1 Block diagram. Philips Semiconductors Product specification Multistandard decoder RATINGS Limiting values in accordance with the Absolute Maximum System (IEC 134) PARAMETER Supply voltage (pin 13) Voltage range at pins 10, 11, 17, 23, 24, 25, 26, 27, 28 to pin 9 (ground) Current at pin 12 Peak value Total power dissipation Storage temperature range Operating ambient temperature range Vn-9 I12 I12M Ptot Tstg Tamb 0 - - - -25 0 SYMBOL VP - MIN. TDA4557 MAX. 13.2 VP 8 15 1.4 + 150 + 70 UNIT V V mA mA W °C °C March 1991 4 Philips Semiconductors Product specification Multistandard decoder CHARACTERISTICS VP = V13