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DESCRIPTION OF PINS
Pin
Function
No.
wave Information
BLACK
34
HOLD
KILLER
35
FILTER
with signal input
36
CONTRAST
GND-2
37
(VCD)
CHROMA IN/
38
BRIGHTNESS
(cont.)
Voltage and
About 3.2V
7.6V
Normally 4.8V
Applied
externally
4.5V
Peripheral circuitry
R
1.5k 1.5k
1.15k
375
4.7k
1.7k
40k
5k
200
30p
100
20k
20k
40k
33p
4.5V
82
Circuit description
Pin used for holding the
most dark parts of a
video signal. The black
peaks are averaged out
by this circuitry. As R
increases more of the
blacks are held.
2k
To decrease killer sensi-
tivity, connect a high M
resistor between the pin
and GND.
3.2k
Can be controlled by
5.1V center
20k
Chroma signal standard.
Chroma signal level is
200mV
-
. This pin is
670
P
P
also used as a bright-
ness control pin. DC
reproduction ratio is
100%.
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