November 1984
2
Philips Semiconductors
Product specification
Multistandard decoder
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
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
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
PACKAGE OUTLINE
28-lead DIL; plastic (SOT117); SOT 117-1; 1996 November 27.
Supply voltage (pin 13)
V
P
= V
13-9
typ.
12
V
Supply current (pin 13)
I
P
= I
13
typ.
65
mA
Chrominance input signal (peak-to-peak)
V
15-9(p-p)
20 to 200
mV
Chrominance output signal (peak-to-peak)
V
12-9(p-p)
typ.
1,6
V
Colour difference output signals (peak-to-peak values)
TDA4555:
-
(R-Y); TDA4556:
+
(R-Y)
V
1-9(p-p)
typ.
1,05
V
2 dB
TDA4555:
-
(B-Y); TDA4556:
+
(B-Y)
V
3-9(p-p)
typ.
1,33
V
2 dB
Sandcastle pulse; required amplitude for
vertical and horizontal pulse separation
V
24-9
typ.
2,5
V
horizontal pulse separation
V
24-9
typ.
4,5
V
burst gating
V
24-9
typ.
7,7
V
November 1984
4
Philips Semiconductors
Product specification
Multistandard decoder
TDA4555
TDA4556
RATINGS
Limiting values in accordance with the Absolute Maximum System (IEC 134)
Supply voltage (pin 13)
V
P
= V
13-9
max.
13,2
V
Voltage range at pins 10, 11, 17, 23, 24, 25, 26, 27,
28 to pin 9 (ground)
V
n-9
0 to V
P
V
Current at pin 12
I
12
max.
8
mA
Peak value
I
12M
max.
15
mA
Total power dissipation
P
tot
max.
1,4
W
Storage temperature range
T
stg
-
25 to
+
150
C
Operating ambient temperature range
T
amb
0 to
+
70
C
November 1984
5
Philips Semiconductors
Product specification
Multistandard decoder
TDA4555
TDA4556
CHARACTERISTICS
V
P
= V
13-9
= 12 V; T
amb
= 25
C; measured in Fig.1; unless otherwise specified
PARAMETER
SYMBOL
MIN.
TYP.
MAX.
UNIT
Supply (pin 13)
Supply voltage range
V
P
= V
13-9
10,8
-
13,2
V
Supply current
I
P
= I
13
-
65
-
mA
Chrominance part
Chrominance input signal (pin 15)
input voltage with 75% colour bar signal (peak-to-peak
value)
V
15-9(p-p)
20
100
200
mV
input impedance
Z
15-9
2,3
3,3
-
k
Chrominance output signal (pin 12)
output voltage
(peak-to-peak value)
V
12-9(p-p)
-
1,6
-
V
output impedance
(n-p-n emitter follower)
Z
12-9
-
-
20
d.c. output voltage
V
12-9
-
8,2
-
V
Input for delayed signal (pin 10)
d.c. input current
I
10
-
-
10
A
input resistance
R
10-9
10
-
-
k
Demodulator part (PAL/NTSC)
Colour difference output signals
output voltage (proportional to V
13-9
) (peak-to-peak value)
TDA4555
-
(R-Y) signal (pin 1)
V
1-9(p-p)
-
1,05 V
2 dB
-
V
-
(B-Y) signal (pin 3)
V
3-9(p-p)
-
1,33 V
2 dB
-
V
TDA4556
+
(R-Y) signal (pin 1)
V
1-9(p-p)
-
1,05 V
2 dB
-
V
+
(B-Y) signal (pin 3)
V
3-9(p-p)
-
1,33 V
2 dB
-
V
Ratio of colour difference output signals
(R-Y)/(B-Y)
V
1/3-9
-
0,79
10%
-
Residual carrier (subcarrier frequency)
(peak-to-peak value)
V
1,3-9(p-p)
-
-
30
mV
Residual carrier (PAL only)
(peak-to-peak value)
V
1,3-9(p-p)
-
10
-
mV
H/2 ripple at (R-Y) output (pin 1)
(peak-to-peak value)
without input signal
V
1-9(p-p)
-
-
10
mV
D.C. output voltage
n-p-n emitter follower with internal current source of 0,3 mA V
1,3-9
-
7,7
-
V
output impedance
Z
1, 3-9
-
-
150
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