BA7230 Rohm, BA7230 Datasheet - Page 7

• Manufacturer Part Number: BA7230
• Description: NTSC color TV signal encoder
• Manufacturer: Rohm

•
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Multimedia ICs
Input waveform and timing chart
Electrical characteristic curves
80
70
60
50
40
30
20
10
0
0
Fig. 10 Quiescent current vs.
POWER SUPPLY VOLTAGE: V
1
2
power supply voltage
3
4
5
SUPER
COMPOSITE OUT
IMPOSE
from RGB
VIDEO IN
6
RGB IN
CC
SYNC
HDP
PCP
BFP
(V)
7
Y
S
8
3580.5
3580.0
3579.5
3579.0
3578.5
Fig. 11 VCXO free-run frequency vs.
3
POWER SUPPLY VOLTAGE: V
CB
CB
CB
power supply voltage
4
Fig. 9
5
CB: COLOR BURST
1 V
2 V
f
0
L
L
: 0 ~ 0.8V V
: 0 ~ 0.4V V
= 3579.545kHz
6
CC
(V)
H
H
: 3.0V ~ V
: 2.0V ~ V
7
V
V
V
V
V
V
V
V
V
V
H
L
H
L
H
L
H
L
H
L
1V
2V
2V
TTL LEVEL ( 1)
TTL LEVEL ( 1)
TTL LEVEL ( 1)
0.7V
TTL LEVEL ( 1)
TTL LEVEL ( 2)
CC
CC
P-P
P-P
P-P
– 200
– 400
– 600
f
0
600
400
200
= 0
P-P
3
Fig. 12 Capture range and
POWER SUPPLY VOLTAGE: V
4
lock range (!) vs.
power supply voltage
BA7230LS
5
+ lock
f
V
0
IN
+ cap
– lock
= 3579.545kHz
– cap
= 0.1V
6
CC
P-P
(V)
7
7