TDA3566 Philips Semiconductors, TDA3566 Datasheet - Page 7

• Manufacturer Part Number: TDA3566
• Description: PAL/NTSC decoder
• Manufacturer: Philips Semiconductors

Philips Semiconductors
Data insertion
Each colour amplifier has a separate
input for data insertion.
A 1 V peak-to-peak input signal
provides a 3.8 V peak-to-peak output
signal.
To avoid the black-level of the
inserted signal differing from the black
level of the normal video signal, the
data is clamped to the black level of
the luminance signal. Therefore AC
coupling is required for the data
inputs.
To avoid a disturbance of the blanking
level due to the clamping circuit, the
source impedance of the driver circuit
must not exceed 150 . The data
insertion circuit is activated by the
data blanking input (pin 9). When the
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 134).
THERMAL RESISTANCE
February 1994
V
P
T
T
R
amb
stg
P
tot
PAL/NTSC decoder
th j-a
SYMBOL
SYMBOL
supply voltage (pin 1)
total power dissipation
operating ambient temperature
storage temperature
from junction to ambient in free air
voltage at this pin exceeds a level of
0.9 V, the RGB matrix circuits are
switched off and the data amplifiers
are switched on.
To avoid coloured edges, the data
blanking switching time is short. The
amplitude of the data output signals is
controlled by the contrast control at
pin 6. The black level is equal to the
video black level and can be varied
between 2 and 4 V (nominal
condition) by the brightness control
voltage at pin 11.
Non-synchronized data signals do not
disturb the black level of the internal
signals.
PARAMETER
PARAMETER
7
Blanking of RGB and data signals
Both the RGB and data signals can
be blanked via the sandcastle input
(pin 7). A slicing level of 1.5 V is used
for this blanking function, so that the
wide part of the sandcastle pulse is
separated from the remainder of the
pulse. During blanking a level of +1 V
is available at the output. To prevent
parasitic oscillations on the third
overtone of the crystal the optimum
tuning capacitance should be 10 pF.
25
25
MIN.
THERMAL RESISTANCE
13.2
1700
+70
+150
40 K/W
MAX.
Product specification
TDA3566A
V
mW
C
C
UNIT