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M52722SP Datasheet(Fiches technique) 6 Page - Mitsubishi Electric Semiconductor

Numéro de pièce M52722SP
Description  3-CHANNEL VIDEO PREAMPLIFIER PROVIDED WITH OSD MIX AND RETRACE LINE BLK FOR HIGH-RESOLUTION
Télécharger  17 Pages
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Fabricant  MITSUBISHI [Mitsubishi Electric Semiconductor]
Site Internet  http://www.mitsubishichips.com
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 6 page
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MITSUBISHI ICs (Monitor)
M52722SP
3-CHANNEL VIDEO PREAMPLIFIER PROVIDED WITH OSD MIX
AND RETRACE LINE BLK FOR HIGH-RESOLUTION
6
VSCR1 sub-contrast control characteristics and
VSCR1 relative sub-contrast control characteristics (at typ.)
1. Follow the electrical characteristics table except changing V4,V9
and V14 to 4.0V.
2. Read the output amplitude of T.P25 (T.P30 or T.P35) to let the
reading be VOR4 (VOG4 or VOB4).
3. Sub-contrast control characteristics VSCR1 and relative sub-
contrast control characteristics
∆VSCR1 are found by
through respective calculation.
VSCR2 sub-contrast control characteristics and
∆VSCR2 relative sub-contrast control characteristics (at min.)
1. Follow the electrical characteristics table except changing V4, V9
and V14 to 1.0V.
2. Read the output amplitude of T.P25 (T.P30 or T.P35) at this time
to let the reading be VOR5 (VOG5 or VOB5). This value represents
VSCR2.
3. Relative sub-contrast control characteristics
∆VSCR2 is found by:
∆VSCR2=VOR5/VOG5, VOG5/VOB5, VOB5/VOR5
VSCR3 contrast and sub-contrast control characteristics and
∆VSCR3 relative contrast and sub-contrast control
characteristics (at typ.)
1. Follow the electrical characteristics table except changing V17 to
3.0V, and V4, V9 and V14 to 3.0V.
2. Read the output amplitude of T.P25 (T.P30 or T.P35) at this time,
and let the reading be VOR6 (VOG6 or VOB6). This value
represents VSCR3.
3. Relative sub-contrast control characteristics
∆VSCR3 is found by:
∆VSCR3 =VOR6/VOG6, VOG6/VOB6, VOB6/VOR6
VB1 brightness control characteristics and
∆VB1 relative brightness characteristics (at max.)
1. The
conditions
shall
be
as
specified
in
the
electrical
characteristics table.
2. Measure the output of T.P25 (T.P30 or T.P35) at this time with an
ammeter, and let it be VOR7 (VOG7 or VOB7) to let it be VB1,
respectively.
3. For relative control characteristics, further, measure difference
between channels from VOR7, VOG7 or VOB7.
VB2 brightness control characteristics and
∆VB2 relative brightness control characteristics (at typ.)
1. The
conditions
shall
be
as
specified
in
the
electrical
characteristics table.
2. Use an ammeter to measure the output of T.P25 (T.P30 or T.P35)
at this time to let the value be VOR7 (VOG7 or VOB7). This value
represents VB2.
3. For relative brightness control characteristics
∆VB2, further,
calculate difference between channels from VOR7, VOG7 or VOB7.
VB3 brightness control characteristics and
∆VB3 relative brightness control characteristics (at min.):
1. The
conditions
shall
be
as
specified
in
the
electrical
characteristics table.
2. Use an ammeter to measure the output of T.P25 (T.P30 or T.P35)
at this time to let the value be VOR7" (VOG7" or VOB7"). This value
represents VB3.
3. For relative control characteristics
∆VB3, further, calculate
difference between channels from VOR7", VOG7" or VOB7".
FC1 and
∆FC1 frequency characteristics 1 and relative
frequency characteristics (f=50MHz at max.) and
FC1' and
∆FC1' frequency characteristics 1 and relative
frequency characteristics (f=180MHz at max.)
1. The conditions shall be as specified in the electrical charactristics
table.
2. Whilst SG1 and SG2 are used, input SGA first, apply voltage to
the input pin (pin
, pin
or pin
) through about 2k
Ω of
resistor so as to provide 2.5V on the lower side of input signal. In
addition, apply voltage to the hold pin (pin
, pin
or pin
) to
ensure that the output wave of T.P25 (T.P30 or T.P35) will not be
jammed so as to allow the lower side of the sine wave, an output
signal to be 2V. Adjust the main contrast voltage (17V) at this
time to allow the output amplitude to be 4.0VP-P. Then, change
the input signal to SG1 or SG2 to measure each output
amplitude.
3. Now, when letting this test value be
output amplitude 4.0VP-P when SGA is input,
output amplitude VOR 8 (VOG8 or VOB8)
when SG1 is input, and
output amplitude VOR9 (VOG9 or VOB9),
frequency characteristics FC1 or FC1' is calculated from:
4. For relative frequency bands
∆FC1 and ∆FC1', calculate difference
in FC1 and FC1 for each channel.
VSCR1=20LOG
VOR4(VOG4, VOB4)
[
VP-P]
0.7
[
VP-P]
∆VSCR1=VOR4/VOG4, VOG4/VOB4, VOB4/VOR4
∆VB1=VOR7
VOG7
[V]
=VOG7
VOB7
=VOB7
VOR7
∆VB2=VOR7’
VOG7’
[V]
=VOG7’
VOB7’
=VOB7’
VOR7’
∆VB3=VOR7’’
VOG7’’
[V]
=VOG7’’
VOB7’’
=VOB7’’
VOR7’’
3
8
13
23
28
33
FC1=20LOG
VOR8(VOG8, VOB8)
[VP-P]
4.0
[VP-P]
FC1’=20LOG
VOR9(VOG9, VOB9)
[VP-P]
4.0
[VP-P]




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