M52337SP 데이터 시트보기 (PDF) - MITSUBISHI ELECTRIC
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M52337SP
MITSUBISHI ELECTRIC
M52337SP Datasheet PDF : 17 Pages
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MITSUBISHI ICs (Monitor)
M52337SP
3-CHANNEL VIDEO PREAMPLIFIER WITH OSD MIXING FUNCTION
FOR HIGH-RESOLUTION COLOR DISPLAYS
ELECTRICAL CHARACTERISTICS (cont.)
Symbol
Parameter
OSDth
V1th
OSD input threshold voltage
BLK input threshold voltage
Test
point
T.P35
T.P30
T.P25
T.P35
T.P30
T.P25
Input
SW13 SW8 SW13
R-ch G-ch B-ch
aaa
___
bbb
SG7 SG7 SG7
External power supply(V) Pulse input
Limits
V4
V17
V19
V32
V36
SW18
SW1
5,10,15
Min.
Typ.
Max.
Unit
5
5
2
5
1.7
b
SG6
b
SG8
1.7
2.5
3.5
V DC
5
5
2
5
-
b
SG6
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 13 (pin 8 or pin 3 ), gradually raise V19, and
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
(VTG1 or VTB1).
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 VTR2 (VTG2 or
VTB2).
(V)
5.0
0.0
Output waveform of T.P25 (T.P30 and T.P35 are also the same)
2. From the above, VT (VTR, VTG or VTB) is found by
VTR1(VTG1, VTB1)+VTR2 (VTG1, VTB1)
VTR (VTG, VTB)=
2
which should be used properly depending upon output pins.
In measuring, useT.P25 VTR1,T.P30 VTG1 and T.P35 VTB1.
3. After setting VTR (VTG or VTB), 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 VP-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 13 (pin 8 or pin 3 ), read the output amplitude
of T.P25 (T.P30 or T.P35) to let the reading be VOR1 (VOG1 or
VOB1).
2. Max. gain GV is found by:
VOR1(VOG1, VOB1)
GV=20log
0.7
[VP-P]
[VP-P]
3. Relative max. gain ∆G is found by
∆GV=VOR1/VOG1, VOG1/VOB1, VOB1/VOR1
through respective calculation.
VCR1 main contrast control characteristics (at typ.) and
∆ VCR1 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 VOR2 (VOG2 or VOB2).
3. Contrast control characteristics VCR1 and relative contrast control
characteristics ∆VCR1 are found by
VCR1=20log
VOR2(VOG2, VOB2)
0.7
[VP-P]
[VP-P]
∆VOR1=VCR2/VOG2, VOG2/VOB2, VOB2/VOR2
through respective calculation.
VCR2 main contrast control characteristics (at min.) and
∆VCR2 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 VOR3 (VOG3 or VOG3) to let it be VCR2, respective
3. Relative contrast control characteristic ∆VCR2 is found by:
∆VCR2=VOR3/VOG3, VOG3/VOB3, VOB3/VOR3
5
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