M52338 데이터 시트보기 (PDF) - MITSUBISHI ELECTRIC
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M52338 Datasheet PDF : 12 Pages
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MITSUBISHI ICs (TV)
M52338FP
INTERFACE IC FOR ACTIVE MATRIX LIQUID CRYSTAL PANEL
WO21 Offset among channels at white balance 2
Based on the results of white balance 2, measure offset among
channels.
γ11,γ21 γ1 control
In inputting signal Y, compare the voltage difference between
pedestal level and the first or second gradation of output signal
Y when voltage at pin 22 is 4.5V, voltage at pin 24 is 1.5V and
voltage at pin 25 is 1.0V with the difference when voltage at pin
25 is 4.5V. Also, measure in the same way as above when pin
7 is connected to GND and the mode is changed to EXT.
γ21,γ22 γ2 control
In inputting signal Y, compare the voltage difference between
the 9th or 8th gradation and white level of output signal Y when
voltage at pin 22 is 4.5V, voltage at pin 24 is 1.5V, and voltage
at pin 26 1.0V with the difference when voltage at pin 26 is 4.5V.
Also, measure in the same way as above when pin 7 is
connected to GND and the mode is changed to EXT.
COmin1,COopen1,COmax1 Contrast control 1
In inputting signal Y (0.2VP-P), measure the amplitude of output
signal of each channel when voltage at pin 22 is 4.5V and
voltage at pin 24 is changed to GND, open, and 4.5V. Also,
measure in the same way as above when pin 7 is connected
to GND and the mode is changed to EXT.
COmaxG1
Contrast control MAX gain 1
In inputting signal Y (0.2VP-P), calculate the ratio of input signal
amplitude to output amplitude of each channel when voltage at
pins 22 and 24 are 4.5V.
M=20log (output amplitude/input amplitude)
COmina,COopena,COmaxa Contrast control a
In inputting signal Y (0.2VP-P), measure the amplitude of output
signal of each channel when pin 22 is grounded and voltage at
pin 24 is changed to GND, open, and 4.5V. Also, measure in
the same way as above, when pin 7 is connected to GND and
the mode is changed to EXT.
COmaxa
Contrast control MAX gain a
In inputting signal Y (0.2VP-P), calculate the ratio of input signal
amplitude to output amplitude of each channel when pin 22 is
grounded and voltage at pin 24 is 4.5V.
M=20log (output amplitude/input amplitude)
COminO1
Non-inverted/inverted contrast control
offset 1 (contrast=4.5V)
Compare values of contrast 1 and a of each channel measured
when voltage at pin 24 is 4.5V. Also, measure in the same way
as above when pin 7 is connected to GND and the mode is
changed to EXT.
COmaxO1
Non-inverted/inverted contrast control
offset 1 (contrast=GND)
Compare values of contrast 1 and a of each channel measured
when pin 24 is connected to GND. Also, measure in the same
way as above when pin 7 is connected to GND and the mode
is changed to EXT.
COA1 Non-inverted contrast control offset 1
among channels (contrast=4.5V)
Calculate the difference in amplitude of contrast 1 measured
when voltage at pins 22 and 24 are 4.5V among channels.
Also, measure in the same way as above when pin 7 is
connected to GND and the mode is changed to EXT.
COB1 Inverted contrast control offset 1 among
channels (contrast=4.5V)
Calculate the difference in amplitude of contrast a measured
when pins 22 is grounded and voltage at pin 24 is 4.5V among
channels. Also, measure in the same way as above when pin
7 is connected to GND and the mode is changed to EXT.
SCmin1,SCmax1
Sub contrast control
In inputting signal Y (0.2VP-P), measure the output amplitude of
Rch and Bch when voltage at pin 22 is 4.5V, voltage at pin 240
is 1.0V and voltage at pin 28 or 30 is changed to GND and
4.5V. Also, measure in the same way as above when pin 70
is connected to GND and the mode is changed to EXT.
SC1
Sub contrast control variance
Based on the results of sub contrast control, calculate the
variance.
BRmin1,BRopen1,BRmax1
Brightness control
In inputting signal Y and FRP1, measure of the output
amplitude of each channel when pin.24 is grounded and voltage
at pin 23 is changed to GND, open and 4.5V. Also, measure in
the same way as above when pin 7 is connected to GND and
the mode is changed to EXT.
BR1
Brightness control variance
Based on the results of brightness control, calculate the
variance of each channel.
BRmin1 Brightness control offset among channels
Calculate the difference in output amplitude of brightness
measured when pins 24 .and 23 are grounded among channels.
Also, measure in the same way as above when pin 7 is
connected to GND and the mode is changed to EXT.
BRmax1 Brightness control offset among channels
Calculate the difference in output amplitude of brightness
measured when pin 24 is grounded and voltage at pin 23 is 4.5V
among channels. Also, measure in the same way as above
when pin 7 is connected to GND and the mode is changed to
EXT.
SBmiR1, SBmax1
Sub bias control
In inputting signal Y and FRP1, measure output amplitude of
Rch and Bch when pin 24 is grounded and voltage at pin 20 or
018 is changed to GND and 4.5V. Also, measure in the same
way as above when pin 7 is connected to GND and the mode
is changed to EXT.
SB1
Sub bias control variance
Based on the results of sub bias control, calculate the variance.
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