DATA SHEET
Product specification
File under Integrated Circuits, IC02
September 1982
INTEGRATED CIRCUITS
TDA3561A
PAL decoder
September 1982
2
Philips Semiconductors
Product specification
PAL decoder
TDA3561A
GENERAL DESCRIPTION
The TDA3561A is a decoder for the PAL colour television standard. It combines all functions required for the identification
and demodulation of PAL signals. Furthermore it contains a luminance amplifier, an RGB-matrix and amplifier. These
amplifiers supply output signals up to 5 V peak-to-peak (picture information) enabling direct drive of the discrete output
stages. The circuit also contains separate inputs for data insertion, analogue as well as digital, which can be used for
text display systems (e.g. (Teletext/broadcast antiope), channel number display, etc. Additional to the TDA3560, the
circuit includes the following features:
The peak white limiter is only active during the time that the 9,3 V level at the output is exceeded. The start of the
limiting function is delayed by one line period. This avoids peak white limiting by test patterns which have abrupt
transitions from colour to white signals.
The brightness control is obtained by inserting a variable pulse in the luminance channel. Therefore the ratio of
brightness variation and signal amplitude at the three outputs will be identical and independent of the difference in gain
of the three channels. Thus discolouring due to adjustment of contrast and brightness is avoided.
Improved suppression of the internal RGB signals when the device is switched to external signals, and vice versa.
Non-synchronized external RGB signals do not disturb the black level of the internal signals.
Improved suppression of the residual 4,4 MHz signal in the RGB output stages.
Cascoded stages in the demodulators and burst phase detector minimize the radiation of the colour demodulator
inputs.
High current capability of the RGB outputs and the chrominance output.
QUICK REFERENCE DATA
PACKAGE OUTLINE
28-lead DIL; plastic (SOT 117); SOT117-1; 1996 November 21.
Supply voltage
V
1
-
27
type. 12
V
Supply current
I
1
typ.
85
mA
Luminance input signal (peak-to-peak value)
V
10-27(p-p)
typ.
0,45
V
Chrominance input signal (peak-to-peak value)
V
3-27(p-p)
55 to 1100
mV
Data input signals (peak-to-peak value)
V
13, 15, 17-27(p-p)
typ.
1
V
RGB output signals at nominal contrast
and saturation (peak-to-peak value)
V
12, 14, 16-27(p-p)
typ.
5,25
V
Contrast control range
typ.
20
dB
Saturation control range
min.
50
dB
Input voltage for data insertion
V
9-27
min.
0,9
V
Blanking input voltage
V
8-27
typ.
1,5
V
Burst gating and black-level gating input voltage
V
8
-
27
typ.
7
V
September 1982
3
Philips Semiconductors
Product specification
PAL decoder
TDA3561A
Fig.1 Block diagram.
September 1982
4
Philips Semiconductors
Product specification
PAL decoder
TDA3561A
RATINGS
Limiting values in accordance with the Absolute Maximum System (IEC 134)
THERMAL RESISTANCE
CHARACTERISTICS
V
P
= V
1-27
= 12 V; T
amb
= 25
C; unless otherwise specified
Supply voltage
V
P
= V
1-27
max.
13,2
V
Total power dissipation; see also Fig.2
P
tot
max.
1,7
W
Storage temperature range
T
stg
-
25 to
+
150
C
Operating ambient temperature range
T
amb
-
25 to
+
65
C
From junction to ambient
R
th j-a
=
50
K/W
Supply voltage
V
P
= V
1
-
27
typ.
12
V
8 to 13,2
V
Supply current
typ.
85
mA
<
115
mA
Total power dissipation
P
tot
typ.
1,0
W
<
1,4
W
Luminance input (pin 10)
Input voltage (peak-to-peak value); note 1
V
10-27(p-p)
typ.
0,45
V
Input level before clipping
V
10
-
27
<
2
V
Input current; input level 2 V, clamp not active
I
10
typ.
0,15
A
<
1
A
Contrast control range (see Fig.3)
-
17 to
+
3
dB
Control voltage for 40 dB attenuation
V
7-27
typ.
1,2
V
Input current contrast control at V
7
-
27
= 3 V
I
7
<
10
A
Chrominance amplifier
Input voltage (peak-to-peak value); note 2
V
3-27
(p-p)
typ.
550
mV
55 to 1100
mV
Input impedance
|Z
3
-
27
|
typ.
9
k
6 to 12
k
Input capacitance
C
3
-
27
typ.
4
pF
<
6
pF
A.C.C. control range
>
30
dB
Change of the burst signal at the output
over the whole control range
<
1,5
dB
Gain at nominal contrast/saturation
pin 3 to pin 28; note 3
>
32
dB
Output signal (peak-to-peak value)
at nominal contrast/saturation;
burst signal: 0,5 V peak to peak
V
28-27(p-p)
typ.
1,7 V
September 1982
5
Philips Semiconductors
Product specification
PAL decoder
TDA3561A
Maximum output voltage (peak-to-peak value)
R
L
= 2 k
V
28-27(p-p)
typ.
4,0
V
Distortion of chrominance amplifier
at V
28-27(p-p)
= 2 V up to V
3-27(p-p)
= 1 V
d
typ.
1,5
%
<
5
%
Frequency response between 0 and 5 MHz
-
2
dB
Saturation control range (see Fig.4)
>
50
dB
Input current saturation control at V
6
-
27
= 3 V
I
6
<
15
A
Tracking between luminance and chrominance
with contrast control over a range of 10 dB
<
2
dB
Cross-coupling between luminance
and chrominance amplifier; note 10
<
-
46
dB
Signal-to-noise ratio
at nominal input signal; note 11
S/N
>
56
dB
Phase shift between burst and chrominance
at nominal contrast/saturation
<
5
o
Output impedance of chrominance amplifier
Z
28-27
typ.
25
Maximum output current
I
28
<
15
mA
Reference part
Phase locked loop:
-
catching range; note 4
>
500
Hz
typ.
700
Hz
-
phase shift; note 5
<
5
Oscillator:
-
temperature coefficient of oscillator frequency; note 4
typ.
-
1,5
Hz/K
-
frequency deviation for V
P
changing from 10 to 13,2 V; note 4
typ.
40
Hz
-
input resistance (pin 26)
R
26-27
typ.
340
260 to 420
-
input capacitance (pin 26)
C
26-27
<
10
pF
-
output resistance (pin 25)
R
25-27
typ.
150
100 to 200
-
output voltage (peak-to-peak value; pin 25)
V
25
-
27(p-p)
typ.
700
mV
A.C.C. generation:
-
reference voltage (pin 4)
V
4
-
27
typ.
4,9
V
-
control voltage at nominal input signal (pin 2)
V
2
-
27
typ.
5,1
V
-
control voltage without chrominance input (pin 2)
V
2
-
27
typ.
2,65
V
-
colour-off voltage (pin 2)
V
2
-
27
typ.
3,15
V
-
colour-on voltage (pin 2)
V
2
-
27
typ.
3,4
V
-
identification-on voltage (pin 2)
V
2
-
27
typ.
1,9
V
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