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CXA1785 View Datasheet(PDF) - Sony Semiconductor

Part Name
Description
View to exact match
CXA1785
Sony
Sony Semiconductor Sony
CXA1785 Datasheet PDF : 29 Pages
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CXA1785AR
Pin No.
43
44
Symbol
VCC1
F ADJ
Pin voltage
1.2V
VCC1
Equivalent circuit
45 CLAMP
44
VEE
VCC1
45
Description
Power supply connection.
Connect a resistance between
this pin and GND; the outflow
current value adjusts the
internal filters. Connect 18 k
for both NTSC and PAL.
The following conditions apply
to the resistance connected:
Allowable difference in
GND resistance: ±2 %
Temperature characteristics:
±200 ppm
Clamps the luminance signal
pedestal level.
Use a low-leakage capacitor
because this pin has high
impedance.
46
AGC
FILTER
VEE
VCC1
GND
Connects AGC detection filter
of luminance signal.
47 AGC OUT
48 PICTURE
46
VEE
VCC1
47
VEE
VCC1
48
VEE
GND
GND
Outputs the voltage detected
by the AGC detection circuit of
luminance signal.
When the AGC amplifier gain
is high, the output voltage is
high.
Adjusts frequency response of
luminance signal. Decreasing
the voltage emphasizes
contours.
GND
—9—
 

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