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參數(shù)資料
| 型號： | LVA519 |
| 廠商： | MITSUMI ELECTRIC |
| 英文描述： | Sync Separator with AFC Monolithic IC |
| 中文描述： | 同步分離器與亞足聯(lián)單片集成電路 |
| 文件頁數(shù)： | 6/8頁 |
| 文件大?。?/td> | 173K |
| 代理商： | LVA519 |
MITSUMI
Sync Separator with AFC LVA519
Measuring Procedures
(Except where noted otherwise, Ta=25°C, V
CC
=5.0V, V
IN
=2.0V
P
-
P
)
Item
Symbol
Switch state
Measuring Procedures
S1
B
B
B
B
B
S2
B
A
A
A
A
S3
A
B
B
B
B
S4
A
B
B
B
B
S5
A
A
A
A
A
Consumption current
Id
V
HH
V
HL
V
VH
V
VL
Horizontal sync
(H)
output
(L)
Vertical sync
(H)
output
(L)
Free-running frequency
f
O
A
B
B
B
A
setting range
Power supply fluctuation of
f
O
1
A
B
B
B
A
free-running frequency
Free-running frequency
f
O
2
A
B
B
B
A
temperature coefficient
Capture range
f
C
f
L
td
Pw
Vt
HH
Vt
HL
B/A
B/A
A/B
A/B
A
A
A
A
B
B
B
B
B
B
B
B
A
A
A
A
Lock range
AFC output delay time
AFC output pulse width
Schmitt trigger
(H)
B
A
B
B
A
threshold
(L)
Connect a DC ammeter to V
CC
pin.
Input standard color bar 2V
P
-
P
.
Measure at TP5
Input standard color bar 2V
P
-
P
.
Measure at TP4.
Adjust VR1 and measure frequency at TP5.
With fo at 15.73kHz, vary Vcc between 4.0V~6.0V
and measure at TP5.
With fo at 15.73kHz, vary temperature between
-
20°C and 80°C and measure at TP5.
Input standard color bar 2V
P
-
P
and measure at TP1 and TP5.
*
1
Input standard color bar 2V
P
-
P
and measure at TP1 and TP5.
*
1
Input standard color bar 2V
P
-
P
and measure at TP2 and TP5.
*
2
Input standard color bar 2V
P
-
P
and measure at TP5.
*
2
Measure at TP3 and TP4.
*
3
Notes:
*
1 Capture range (fc)
Vary VR1 between max min and min max with SW1, and for each
lock make SW1 A and measure at TP5.
Data : f
C
1 and f
C
2 smaller value
Lock range (fL)
With SW1 at B and locked, vary VR1 and when the lock is released,
make SW1 A and measure at TP5.
Data : f
L
1 and f
L
2 smaller value
fc1
fc2
15.73KHz
fL1
fL2
15.73KHz
Measuring Procedures
(Except where noted otherwise, Ta=25°C, V
CC
=5.0V, V
IN
=2.0V
P
-
P
)
Item
Symbol
Switch state
Measuring Procedures
S1
S2
S3
S4
S5
Sync separation
V
SEPA
B
A
B
B
A
level
AFC switching
R
AFC
B
A
B
B
B
resistance
Raise horizontal sync signal level of input standard
color bar 2V
P
-
P
and measure the level when a signal
is output at TP5.
With Fo at 15.73kHz, vary Iafc, and determine
according to Iafc value when TP5 output signal
switches to a composite signal, and TP6 voltage V6.
R
AFC
=V6/I
A
1
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