tda4556 NXP Semiconductors, tda4556 Datasheet - Page 2

• Manufacturer Part Number: tda4556
• Description: Multistandard Decoder
• Manufacturer: NXP Semiconductors

Philips Semiconductors
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
Demodulator part
QUICK REFERENCE DATA
PACKAGE OUTLINE
28-lead DIL; plastic (SOT117); SOT 117-1; 1996 November 27.
November 1984
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)
Sandcastle pulse; required amplitude for
Gain controlled chrominance amplifier for PAL, SECAM
and NTSC
ACC rectifier circuits (PAL/NTSC, SECAM)
Burst blanking (PAL) in front of 64 s glass delay line
Chrominance output stage for driving the 64 s glass
delay line (PAL, SECAM)
Limiter stages for direct and delayed SECAM signal
SECAM permutator
Flyback blanking incorporated in the two synchronous
demodulators (PAL, NTSC)
PAL switch
Internal PAL matrix
Multistandard decoder
TDA4555: (R-Y); TDA4556:
TDA4555: (B-Y); TDA4556:
vertical and horizontal pulse separation
horizontal pulse separation
burst gating
(R-Y)
(B-Y)
2
Identification part
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)
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
V
I
V
V
V
V
V
V
V
P
P
15-9(p-p)
12-9(p-p)
1-9(p-p)
3-9(p-p)
24-9
24-9
24-9
= I
= V
13
13-9
typ.
typ.
20 to 200
typ.
typ.
typ.
typ.
typ.
typ.
Product specification
12
65
1,6
1,05
1,33
2,5
4,5
7,7
TDA4555
TDA4556
V
mA
mV
V
V 2 dB
V 2 dB
V
V
V