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參數資料
| 型號： | MM1389 |
| 廠商： | MITSUMI ELECTRIC |
| 英文描述： | Pedestal Clamp 2-Input 1-Output 3-Circuit Video Switch |
| 中文描述： | 底座夾2輸入1輸出3 -電路視頻開關 |
| 文件頁數： | 5/7頁 |
| 文件大?。?/td> | 104K |
| 代理商： | MM1389 |
MITSUMI
Pedestal Clamp 2-Input 1-Output 3-Circuit Video Switch MM1389
(Except where noted otherwise, V
CC
=5.0V, V
C
1=V
CC
, V
C
2=0V, PULSE=V
CC
, C1~C6=0.1μF, impress V
B
=3.5V when S9 is 2)
Item
Symbol
Measurement conditions
Notes
Consumption current
I
D
Voltage gain
G
V
f=100kHz
V=2.0V
P
-
P
10MHz/100kHz
V=2.0V
P
-
P
Frequency characteristic
F
C
Dynamic range 1, 2
V
D
1
V
D
2
Crosstalk
C
T
f=4.43MHz
V=2.0V
P
-
P
Switch input voltage H, L
V
IH
V
IL
Clamp pin input voltage H, L
V
CTH
V
CTL
Connect a DC ammeter to the V
CC
pin and measure. The
ammeter is shorted for subsequent measurements.
Input a 2.0V
P
-
P
, 100kHz sine wave to SG, and obtain
G
V
from the following formula given TP1 voltage as V1
and TP3 voltage as V2.
G
V
=20Log (V2/V1) dB
For the above G
V
measurement, given TP3 voltage for
10MHz as V3, F
C
is obtained from the following formula.
F
C
=20Log (V3/V2) dB
Input a video signal to SG and a 5V
P-P
clamp pulse to PULSE.
Given input amplitude on the positive side of clamp level V
C
as V
D
1
IN
, and output amplitude as V
D
1
OUT
and negative side
input amplitude as V
D
2
IN
, and output amplitude as V
D
2
OUT
,
V
D
2 is obtained from the following formula.
V
D
1 : 20Log (V
D
1
OUT
/V
D
1
IN
) <V
D
1
IN
for
-
1dB
V
D
2 : 20Log (V
D
2
OUT
/V
D
2
IN
) <V
D
2
IN
for
-
1dB
Input a 2.0V
P
-
P
, 4.43MHz sine wave to SG, and given
TP1 voltage as V4 and TP3 voltage as V5, C
T
is
obtained from the following formula.
C
T
=20Log (V5/V4) dB
Make S10, S12 and S14 1, and S11, S13 and S15 2.
Input a 2.0V
P
-
P
, 100kHz sine wave to SG, and raise
gradually from V
C
1=0V. TP4 voltage when the SG
signal appears on TP2 is VIN. Next, reverse S10~S15
settings and lower gradually from V
C
1=V
CC
. TP4
voltage when the SG signal appears on TP2 is V
IL
.
Impress 4V on VB and raise gradually from
PULSE=0V. TP11 voltage when less than 2.0V appears
on TP2 is V
CTH
. Lower from PULSE=V
CC
, and TP11
voltage when more than 2.2V appears on TP2 is V
CTL
.
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