CXA1645P/M
RGB Encoder
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Description
The CXA1645P/M is an encoder IC that converts
analog RGB signals to a composite video signal. This
IC has various pulse generators necessary for
encoding. Composite video outputs and Y/C outputs for
the S terminal are obtained just by inputting composite
sync, subcarrier and analog RGB signals.
It is best suited to image processing of personal
computers and video games.
Features
•
Single 5V power supply
•
Compatible with both NTSC and PAL systems
•
Built-in 75Ω drivers
(RGB output, composite video output, Y output, C
output)
•
Both sine wave and pulse can be input as a
subcarrier.
•
Built-in band pass filter for the C signal and delay
line for the Y signal
•
Built-in R-Y and B-Y modulator circuits
•
Built-in PAL alternate circuit
•
Burst flag generator circuit
•
Half H killer circuit
Applications
Image processing of video games and personal
computers
Block Diagram and Pin Configuration
GND2
24
ROUT
23
GOUT
22
BOUT
21
CVOUT
20
V
CC
2
19
FO
18
YTRAP
17
YOUT
16
COUT
15
V
REF
14
I
REF
13
24 pin DIP (Plastic)
24 pin SOP (Plastic)
Structure
Bipolar silicon monolithic IC
Absolute Maximum Ratings
14
V
•
Supply voltage
V
CC
•
Operating temperature Topr
–20 to +75
°C
•
Storage temperature Tstg –65 to +150
°C
•
Allowable power
P
D
CXA1645P 1250 mW
dissipation
CXA1645M 780 mW
Recommended Operating Condition
Supply voltage
V
CC
1, 2 5.0 ± 0.25
V
VIDEO
OUT
R-OUT
G-OUT
B-OUT
Y/C
MIX
75
DRIVER
75
DRIVER
REGULATOR
DELAY
CLAMP
SYNC
ADD
BPF
R-Y
Modulator
MATRIX
B-Y
Modulator
PHASE
SHIFTER
PULSE
GEN
CLAMP
CLAMP
CLAMP
SIN-PULSE
1
GND1
2
RIN
3
GIN
4
BIN
5
NC
6
SCIN
7
NPIN
8
BFOUT
9
YCLPC
10
SYNCIN
11
NC
12
V
CC
1
Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by
any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the
operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.
–1–
E93411A41-ST
SONY [ SONY CORPORATION ]
