Multimedia ICs
Color TV signal encoder
BA7242F
The BA7242F is an IC which converts analog RGB signals to NTSC and PAL color TV signals. In addition to com-
posite output, luminance output, chrominance output, and analog RGB output are available. Each type of output is
equipped with an internal 75鈩?driver.
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Applicationsdevices
TV peripheral
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Features both NTSC and PAL systems.
1) Supports
2) Internal flip-flop circuit for PAL common mode
switching
3) Equipped with Y / C separated output pin.
4) Internal 75鈩?driver
5) Supports subcarrier pulse for color input
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Block diagram
SYNC
BIN
1
CLAMP
MATRIX
BFP
GIN
2
CLAMP
BFP
RIN
3
CLAMP
BFP
B-Y
MOD
V
CC
1
4
GND
V
CC
11
GND2
SYNC
MIX
V
CC
14
V
CC
2
13
Y
OUT
Y/C
MIX
12
V
OUT
SYNC
5
CHROMA
GEN
SYNC
10
C
OUT
BURST
FLAG
R-Y
MOD
BFP
6
F鈥
9
NT / PAL
NT / PAL
GND
NT / PAL
FILTER
PHASE
GEN
GND1
7
8
SCIN
1
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