TDA4555 Datasheet, PDF (2/11 Pages) NXP Semiconductors – Multistandard decoder

Philips Semiconductors
Multistandard decoder
Product specification
TDA4555
TDA4556
GENERAL DESCRIPTION
The TDA4555 and TDA4556 are monolithic integrated
multistandard colour decoders for the PAL, SECAM,
NTSC 3,58 MHz and NTSC 4,43 MHz standards. The
difference between the TDA4555 and TDA4556 is the
polarity of the colour difference output signals (B-Y)
and (R-Y).
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 two synchronous
demodulators (PAL, NTSC)
• PAL switch
• Internal PAL matrix
• Two quadrature demodulators with external reference
tuned circuits (SECAM)
• Internal filtering of residual carrier
• De-emphasis (SECAM)
• Insertion of reference voltages as achromatic value
(SECAM) in the (B-Y) and (R-Y) colour difference output
stages (blanking)
Identification part
• Automatic standard recognition by sequential inquiry
• Delay for colour-on and scanning-on
• Reliable SECAM identification by PAL priority circuit
• 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
QUICK REFERENCE DATA
Supply voltage (pin 13)
Supply current (pin 13)
Chrominance input signal (peak-to-peak)
Chrominance output signal (peak-to-peak)
Colour difference output signals (peak-to-peak values)
TDA4555: −(R-Y); TDA4556: + (R-Y)
TDA4555: −(B-Y); TDA4556: + (B-Y)
Sandcastle pulse; required amplitude for
vertical and horizontal pulse separation
horizontal pulse separation
burst gating
PACKAGE OUTLINE
28-lead DIL; plastic (SOT117); SOT 117-1; 1996 November 27.
V_P = V_13-9
I_P = I₁₃
V_15-9(p-p)
V_12-9(p-p)
typ.
typ.
20 to 200
typ.
12 V
65 mA
mV
1,6 V
V_1-9(p-p)
typ.
V_3-9(p-p)
typ.
1,05 V ± 2 dB
1,33 V ± 2 dB
V_24-9
typ.
V_24-9
typ.
V_24-9
typ.
2,5 V
4,5 V
7,7 V
November 1984
2