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參數(shù)資料
| 型號： | M52337SP |
| 廠商： | Mitsubishi Electric Corporation |
| 英文描述： | 3-CHANNEL VIDEO PREAMPLIFIER WITH OSD MIXING FUNCTION FOR HIGH-RESOLUTION COLOR DISPLAYS |
| 中文描述： | 3，帶OSD混合高功能通道視頻前置放大器分辨率彩色顯示器 |
| 文件頁數(shù)： | 5/17頁 |
| 文件大?。?/td> | 110K |
| 代理商： | M52337SP |
MITSUBISHI ICs (Monitor)
M52337SP
3-CHANNEL VIDEO PREAMPLIFIER WITH OSD MIXING FUNCTION
FOR HIGH-RESOLUTION COLOR DISPLAYS
5
ELECTRICAL CHARACTERISTICS
(cont.)
Symbol
Parameter
Test
point
Input
SW8
G-ch
a
_
b
SG7
External power supply(V)
Pulse input
Limits
Unit
SW13
R-ch
a
_
b
SG7
SW13
B-ch
a
_
b
SG7
V4
V17
V19
V32
V36
SW18
SW1
5,10,15
b
SG8
Min. Typ. Max.
OSDth
OSD input threshold voltage
T.P35
T.P30
T.P25
T.P35
T.P30
T.P25
5
5
2
5
1.7
b
SG6
b
SG6
1.7
2.5
3.5
V
DC
V1th
BLK input threshold voltage
5
5
2
5
-
SW1 only
b
SG8
1.7
2.5
3.5
V
DC
ELECTRICAL CHARACTERISTICS TEST METHOD
SW/NO of signal input pin and SW/NO of pulse input pin, which
have already been described in the electrical characteristics table,
are omitted, and SW/NO of external power supply will only be
described as follows:
Sub-brightness voltages, V32, V27 and V22, which are always set
to the identical value, are represented by V32 in the electrical
characteristic table. In addition, sub-contract voltages, V4, V9 and
V14, which are also set to the identical value, are represented by V4
in the table.
Icc circuit current
Conditions shall be as specified in the electrical characteristic table,
and take measurements with ammeter A when SW1 is turned to the
b side.
Vomax output dynamic range
Follow the following procedure to set V19.
1. Input SG1 to pin
read V19 voltage when the upper part of the output waveform of
T.P25 (T.P30 or T.P35) is distorted to let the reading be VTR1
(V
TG
1 or V
TB
1).
In addition, gradually reduce V19 conversely, and read V19
voltage when the lower part of the output waveform of T.P35
(T.P30 or T.P25) is distorted to let the reading be V
TR
2 (V
TG
2 or
V
TB
2).
(pin
or pin
), gradually raise V19, and
2. From the above, V
T
(V
TR
, V
TG
or V
TB
) is found by
which should be used properly depending upon output pins.
In measuring, use
3. After setting V
TR
(V
TG
or V
TB
), gradually increase SG1 amplitude
from 700mV, and take measurements of output amplitude at a
point where the upper and lower parts of T.P25 (T.P30 or T.P35)
output waveform start to be distorted simultaneously.
Vimax max. allowable input
From the status of Vomax, change V17 into 2.5V as specified in the
electrical characteristics table, gradually increase input signal
amplitude from 700m V
P-P
, and read input signal amplitude at a
point where output signal starts to be distorted.
GV and
GV max gain and relative max. gain
1. Input SG1 to pin
(pin
of T.P25 (T.P30 or T.P35) to let the reading be V
OR1
(V
OG1
or
V
OB1
).
2. Max. gain GV is found by:
or pin
), read the output amplitude
3. Relative max. gain
G is found by
G
V
=V
OR1
/V
OG1
, V
OG1
/V
OB1
, V
OB1
/
VOR1
through respective calculation.
V
CR1
main contrast control characteristics (at typ.) and
V
CR1
relative main contrast control characteristics (at typ.)
1. Follow the electrical characteristic table except changing V17 to
2.0V.
2. Read the output amplitude of T.P25 (T.P30 or T.P35) at this time
to let the reading be V
OR2
(V
OG2
or V
OB2
).
3. Contrast control characteristics V
CR1
and relative contrast control
characteristics
V
CR1
are found by
through respective calculation.
V
CR2
main contrast control characteristics (at min.) and
V
CR2
relative main contrast control characteristics (at min.)
1. Follow the electrical characteristic table except changing V17 to
1.0V.
2. Read the output amplitude of T.P25 (T.SP30 or T.P35) to let the
reading be V
OR3
(V
OG3
or V
OG3
) to let it be V
CR2
, respective
3. Relative contrast control characteristic
V
CR2
is found by:
V
CR2
=V
OR3
/V
OG3
, V
OG3
/V
OB3
, V
OB3
/V
OR3
13
8
3
(V)
5.0
0.0
Output waveform of T.P25 (T.P30 and T.P35 are also the same)
V
TR
(V
TG
, V
TB
)=
V
TR1
(V
TG1
, V
TB1
)+V
TR2
(V
TG1
, V
TB1
)
2
T.P25 V
TR1
,T.P30 V
TG1
and T.P35 V
TB1
.
13
8
3
G
V
=20log
V
OR1
(V
OG1
, V
OB1
) [V
P-P
]
0.7 [V
P-P
]
V
OR1
=V
CR2
/V
OG2
, V
OG2
/V
OB2
, V
OB2
/V
OR2
V
CR1
=20log
V
OR2
(V
OG2
, V
OB2
) [V
P-P
]
0.7 [V
P-P
]
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