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ROHM Semiconductor - Color TV Signal Encoder

Numéro de référence BA7232
Description Color TV Signal Encoder
Fabricant ROHM Semiconductor 
Logo ROHM Semiconductor 





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BA7232 fiche technique
Multimedia ICs
Color TV Signal Encoder
BA7232FS
The BA7232FS converts analog RGB signals into color TV signals in the NTSC and PAL formats. From inputs of
analog RGB signals, a composite synch signal, burst pulses and a color carrier, this IC generates a color TV signal,
and can be adapted for either NTSC or PAL standards, which are selected externally. When set to PAL, the
BA7232FS changes chroma phase according to the burst flag pulses.
The chroma signals and luminosity signals can be combined into a color TV signal or output separately, making this
IC suitable for S pins. Also, this IC comes with an output pin for the analog RGB signal. Each output has a built-in
75driver.
Applications
TV peripherals
Features
1) Can be adapted for NTSC and PAL formats.
2) Internal flip-flop for PAL phase switching.
3) Separate Y / C output pins.
4) Analog RGB signal output pins.
Block diagram
5) Internal 75driver. (outputs color TV signals, lumi-
nosity signals, chroma signals and analog RGB sig-
nals)
6) Adaptable for color subcarrier pulse input.
BIN 1
GIN 2
RIN 3
VCC1 4
SYNCIN 5
CLAMP
BFP
CLAMP
BFP
CLAMP
BFP
7520 BOUT
7519 GOUT
7518 ROUT
MATRIX
VCC
SYNC
17 VCC2
16 SYNCOUT
BFPIN 6
7515 YOUT
NT / PAL 7
SCIN 8
FILTER
14 N.C.
7513 VOUT
GND1 9 GND
COUT 10
75
12 N.C.
GND 11 GND2
1

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