Page 1
MITSUBISHI ICs (Monitor)
PRELIMINARY
Notice:This is not a final specification.
Some parametric limits are subject to change.
BUS CONTROLLED 3-CHANNEL VIDEO PREAMP FOR CRT DISPLAY MONITOR
DESCRIPTION
M52742SP is semiconductor integrated circuit for CRT display
monitor.
It includes OSD blanking, OSD mixing, retrace blanking, wide band
amplifre, brightness control, uniformity function.
P-P
P-P
P-P
2
(typ.)
(max.)
(max.)
Main/sub contrast and OSD adjust function can be controlled by I
bus.
FEATURES
Frequency band width: RGB.............................200MHz (at -3dB)
•
OSD..............................................80MHz
Input :RGB.............................................................0.7V
OSD..........................................3V
BLK (for OSD)..........................3V
Retrace BLK.............................3V
minimum (positive)
P-P
minimum (positive)
P-P
minimum (positive)
P-P
Output :RGB..........................................................5.5V
OSD..............................................................5V
•
Main contrast and sub contrast can be controlled by I
•
Include internal and external pedestal clamp circuit
2
C bus.
STRUCTURE
Bipola silicon monolisic IC
APPLICATION
CRT display monitor
PIN CONFIGURATION (TOP VIEW)
CC1(R)
CC1(B)
ABL IN
CC=5V
1
2
3
4
7
8
13
14
15 22
16 21
17
18 19
OSD BLK IN
C
INPUT(R)
V
OSD IN(R)
GND 1(R)
INPUT(G)
INPUT(SOG)
VCC1(G)
OSD IN(G)
GND 1(G)
INPUT(B)
V
OSD IN(B)
GND 1(B)
UNIFORMITY IN
V
SOG SEP OUT
M52742SP
36
35
34
33
325
316
30
M52742SP
29
289
2710
2611
2512
24
23
20
V
CC2
OUTPUT(R)
EXT FEED BACK(R)
GND2
OUTPUT(G)
EXT FEED BACK(G)
MAIN BRIGHTNESS
OUTPUT(B)
EXT FEED BACK(B)
RETRACE BLK IN
D/A OUT1
D/A OUT2
D/A OUT3
D/A OUT4
GND(5V)
SDA
SCL
CLAMP PULSE IN
RECOMMENDED OPERATING CONDITION
Supply voltage range......................11.5 to 12.5V (V3, V8, V12, V36)
4.5 to 4.4V (V17)
Rated supply voltage..................................12.0V (V3, V8, V12, V36)
5.0V (V17)
MAJOR SPECIFICATION
Bus controlled 3ch video pre-amp with OSD mixing function and
retrace blanking function
Outline 36P4E
1
Page 2
MITSUBISHI ICs (Monitor)
PRELIMINARY
Notice:This is not a final specification.
Some parametric limits are subject to change.
BUS CONTROLLED 3-CHANNEL VIDEO PREAMP FOR CRT DISPLAY MONITOR
BLOCK DIAGRAM
OUTPUT (R)
35
27
RETRACE
BLANKING
30
MAIN BRIGHTNESS RETRACE BLK IN
AMPOSD MIX
EXT FEED BACK (R)
34
F/B
CLAMP
OUTPUT (G)
32
RETRACE
AMPOSD MIX
BLANKING
EXT FEED BACK (G)
31
F/B
CLAMP
OUTPUT (B)
29
RETRACE
AMPOSD MIX
BLANKING
EXT FEED BACK (B)
28
F/B
CLAMP
(DIGITAL)
VCC 5V
17
M52742SP
SDA
SCL
GND(5V)
21
20
22
I/F
BUS
DAC
23 24 25 26
FOR CUT-OFF AdjIN
4bit
OSD
LEVEL
B SUB CONT 8bit
R SUB CONT 8bit
G SUB CONT 8bit
1
8bit
MAIN
CONTRAST
SUB
CONTRAST
CLAMP
2
4
(8bit)
SUB CONT
3
5
MAIN
CONTRAST
SUB
CONTRAST
CLAMP
6
9
(8bit)
SUB CONT
8
10
MAIN
CONTRAST
SUB
CONTRAST
CLAMP
11
13
12
Main
(8bit)
SUB CONT
14
CONTRAST
15
Sync On
GreenSep
7
33
36
CC2=12V
V
1619
UNIFORMITY GND2 OSD BLK IN DAC OUTPUT
IN
CLAMP PULSE
18
INPUT (R)
OSD IN (R)
VCC1 (R) 12V
GND 1(R)
INPUT (G)
OSD IN (G)
CC1 (G) 12V
V
GND 1(G)
INPUT (B)
OSD IN (B)
CC1 (B) 12V
V
GND 1(B)
INPUT (SOG)
CONTRAST (ABL) IN
SOG SEP OUT
2
Page 3
°
°
−
∆
∆
∆
∆
∆
∆
∆
−
MITSUBISHI ICs (Monitor)
PRELIMINARY
Notice:This is not a final specification.
Some parametric limits are subject to change.
BUS CONTROLLED 3-CHANNEL VIDEO PREAMP FOR CRT DISPLAY MONITOR
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Ratings Unit
V
CC
P
d
T
opr
T
stg
V
opr
V
opr’
Supply voltage 13.0 V
Power dissipation 2403 mW
Ambient temperature -20 to +75
Storage temperature -40 to +150
Recommended supply 12.0 V
Voltage range 10.5 to 12.5 V
ELECTRICAL CHARACTERISTICS
Test
Symbol Parameter
Gv
C1
V
C2
V
C3
V
SC1
V
SC2
V
SC3
V
C1
C2
C3
SC1
SC2
SC3
Circuit
current1
Circuit
current2
Output
dynamic range
Maximum
input
Maximum
gain
Relative maximum gain
Main contrast
control
characteristics1
Main contrast
control relative
characteristics1
Main contrast
control
characteristics2
Main contrast
control relative
characteristics2
Main contrast
control
characteristics3
Main contrast
control relative
characteristics3
Sub contrast
control
characteristics1
Sub contrast
control relative
characteristics1
ub contrast
S
control
characteristics2
Sub contrast
control relative
characteristics2
Sub contrast
control
characteristics3
Sub contrast
control relative
characteristics3
I
CC1
I
CC2
Vomax
Vimax
Gv
V
V
V
V
V
V
point
2,6,11
(s)
RGB
I
A
I
B
OUT
SG2
IN
SG2
OUT
Variable
OUT
SG1
− − −− − −−−−−−
OUT
SG1
− − −− − −−−−−−
OUT
SG1
− − −− − −−−−−−
OUT
SG1
− − −− − −−−−−−
OUT
SG1
− − −− − −−−−−−−−−
OUT
SG1
− − −− − −−−−−−−−−
OUT
SG1
− − −− − −−−−−−−−−
(Ta=25 ° C)
(V
4,9,13
1
OSD
OSD
in
BLK
in
aaa
aaa
b
aa
b
aa
b
aa
b
aa
b
aa
b
aa
b
aa
b
aa
b
aa
CC
=12V, 5V, Ta=25 ° C, unless otherwise noted)
16
UNI
in
CTL
voltage
00H
15
30
Bright
Vari
able
Main
ABL
cont
FFH
255
5.0 6.0 8.0 − V
64H
100
FFH
255
C8H
200
64H
100
14H
20
FFH
255
FFH
255
FFH
255
Input
19
CP in27ReT
b
SG5
b
SG5
b
SG5
b
SG5
b
SG5
b
SG5
b
SG5
b
SG5
b
SG5
b
SG5
b
SG5
7
SOG
in
BLK
a a a 4.0 5.0
a a a 4.0 5.0
aaa
a a a 2.0 5.0
a a a 2.0 5.0
a a a 2.0 5.0
a a a 2.0 5.0
a a a 2.0 5.0
a a a 2.0 5.0
a a a 2.0 5.0
a a a 2.0 5.0
C
C
BUS CTL (H) Limits
01H
02H
03H
04H
05H
06H
07H
08H
Sub
Sub
cont
cont
1
2
FFH
FFH
255
255
C8H
C8H
200
200
64H
64H
100
100
14H2014H2014H
Sub
OSD
cont
3
FFH
00H000H0FFH
255
C8H
200
64H
100
20
BLK
D/A
Adj
Adj
OUT
1
255
OUT
09H
D/A
D/A
D/A
OUT
OUT
2
3
4
FFH
FFH
FFH
255
255
255
M52742SP
0BH
INT
EXT
Min. Typ. Max.
00H
110 130 mA
0
18 25 mA
1.6 −− V
16.5 17.7 19.4 dB
0.8 1.0 1.2 −
15.5 17.0 18.5 dB
0.8 1.0 1.2 −
9.0 10.5 12.0 dB
0.8 1.0 1.2 −
0.2 0.4 0.6 V
0.8 1.0 1.2 −
15.8 17.3 18.8 dB
0.8 1.0 1.2 −
11.5 13.0 14.5 dB
0.8 1.0 1.2 −
1.4 1.7 2.0 V
0.8 1.0 1.2 −
Unit
P-P
P-P
P-P
P-P
3
Page 4
MITSUBISHI ICs (Monitor)
∆
∆
PRELIMINARY
Notice:This is not a final specification.
Some parametric limits are subject to change.
BUS CONTROLLED 3-CHANNEL VIDEO PREAMP FOR CRT DISPLAY MONITOR
ELECTRICAL CHARACTERISTICS
Test
Symbol Parameter
Main/sub
ABL1
B1
B1
B2
B3
C1
C1’
C2
contrast control
characteristics2
Main/sub contrast
control relative
characteristics2
ABL control
characteristics1
ABL control
relative
characteristics1
ABL control
characteristics2
ABL control
relative
characteristics2
Brightness
control
characteristics1
Brightness
control relative
characteristics1
Brightness
control
characteristics2
Brightness
control relative
characteristics2
Brightness
control
characteristics3
Brightness
control relative
characteristics3
Frequency
characteristics1
(f=50MHz)
Frequency relative
characteristics1
(f=50MHz)
Frequency
characteristics1
(f=150MHz)
Frequency relative
characteristics1
(f=150MHz)
Frequency
characteristics2
(f=150MHz)
Frequency relative
characteristics2
(f=150MHz)
Crosstalk 1
(f=50MHz)
Crosstalk 1
(f=150MHz)
Crosstalk 2
(f=50MHz)
Crosstalk 2
(f=150MHz)
Crosstalk 3
(f=50MHz)
Crosstalk 3
(f=150MHz)
VMSC
VMSC
ABL1
ABL2
∆ABL2
V
∆V
VB2
∆V
VB3
∆V
FC1
∆F
F
∆FC1’
FC2
∆F
C.T.1
C.T.1’
C.T.2
C.T.2’
C.T.3
C.T.3’
point
(s)
OUT
2,6,11
RGB
in
b
SG1
1
OSD
BLK
aa
− − −− − −−−−−−−−−
b
OUT
SG1
aa
− − −− − −−−−− 0.8 1.0 1.2 −
b
OUT
SG1
aa
− − −− − −−−−− 0.8 1.0 1.2 −
OUT a a a
− − −− − −−−−− -0.3 0 0.3 V
OUT a a a
− − −− − −−−−− -0.3 0 0.3 V
OUT a a a
− − −− − −−−−− -0.3 0 0.3 V
b
OUT
SG3
aa
− − −− − −−−−−− -1.0 0 1.0 dB
b
OUT
SG3
aa
− − −− − −−− -1.0 0 1.0 dB
b
OUT
SG3
aa
− − −− − −−−−− -1.0 0 1.0 dB
2bSG3
OUT(29)
6a
11a
2bSG3
6a
11a
2a
6bSG3
11a
2a
6bSG3
11a
2a
6a
11bSG3
2a
6a
11bSG3
aa
aa
aa
aa
aa
aa
OUT(32)
OUT(29)
OUT(32)
OUT(29)
OUT(35)
OUT(29)
OUT(35)
OUT(32)
OUT(35)
OUT(32)
OUT(35)
4,9,13
OSD
in
(cont.)
Input
19
CP in27ReT
b
SG5
b
SG5
b
SG5
b
SG5
b
SG5
b
SG5
a
5V
a
5V
a
5V
a
5V
a
5V
a
5V
a
5V
a
5V
a
5V
M52742SP
CTL
voltage
7
16
BLK
SOG
in
UNI
in
30
Bright
a a a 2.0 5.0
a a a 2.0 4.0
15
ABL
00H
Main
C8H
cont
200
FFH
255
a a a 2.0 2.0 2.3 2.8 3.3 V
a a a 4.0 5.0 3.3 3.7 4.1 V
a a a 2.0 5.0 1.5 1.8 2.1 V
a a a 1.0 5.0 0.7 0.9 1.1 V
aaa
aaa
aaa
aaa
aaa
aaa
aaa
aaa
aaa
Vari
able
Vari
able
Vari
able
Vari
able
Vari
able
Vari
able
Vari
able
Vari
able
Vari
able
Va
ria
5.0
ble
Va
ria
5.0
ble
5.0 -3.0 3.0 5.0 dB
FFH
5.0
255
5.0 − -15 -10 dB
5.0 − -25 -20 dB
5.0 − -15 -10 dB
5.0 − -25 -20 dB
5.0 − -15 -10 dB
BUS CTL (H) Limits
01H
02H
03H
04H
05H
06H
07H
08H
Sub
Sub
Sub
OSD
BLK
cont
cont
cont
1
2
3
C8H
C8H
C8H
200
200
200
FFH
FFH
FFH
255
255
255
FFH
FFH
FFH
255
255
255
Adj
Adj
OUT
00H000H0FFH
D/A
1
255
OUT
09H
D/A
D/A
D/A
OUT
OUT
2
3
4
FFH
FFH
FFH
255
255
255
0BH
INT
EXT
Min. Typ. Max.
3.4 4.0 4.6 V
0.8 1.0 1.2 −
4.1 4.9 5.7 V
-2.0 0 2.5 dB
00H
-3.0 0 3.0 dB
0
− -25 -20 dB
Unit
P-P
P-P
P-P
4
Page 5
MITSUBISHI ICs (Monitor)
PRELIMINARY
Notice:This is not a final specification.
Some parametric limits are subject to change.
BUS CONTROLLED 3-CHANNEL VIDEO PREAMP FOR CRT DISPLAY MONITOR
ELECTRICAL CHARACTERISTICS (cont.)
Symbol Parameter
Pulse
Tr
characteristics1
P-P)
(4V
Pulse
Tf
characteristics2
P-P)
(4V
Clamp pulse
VthCP
threshold
voltage
Clamp pulse
WCP
minimum
width
Pedestal voltage
DCL
temperature
characteristics1
Pedestal voltage
temperature
characteristics2
OSD pulse
characteristics1
OSD pulse
characteristics2
OSD adjust control
characteristics1
OSD adjust control
relative
characteristics1
OSD adjust control
characteristics2
OSD adjust control
relative
characteristics2
OSD adjust control
characteristics3
OSD adjust control
relative
characteristics3
PDCH
P
OTr
OTf
Oaj1
∆Oaj1
Oaj2
∆Oaj2
OBLK
∆OBLK
OSD input
VthOSD
threshold
voltage
OSD BLK input
VthBLK
HBLK1
HBLK2
HBLK3
threshold
voltage
Retrace BLK
characteristics1
Retrace BLK
characteristics2
Retrace BLK
characteristics3
Retrace BLK
VthRET
input threshold
voltage
SOG input
SS-NV
maximum
noize voltage
SOG
SS-SV
minimum
input voltage
VSH
VSL
TDS-F
Sync output
hi level
Sync output
lo level
Sync output
delay time1
Test
point
2,6,11
(s)
OUT
OUT
OUT
OUT
OUT
OUT
RGB
in
b
SG1
b
SG1
b
SG1
b
SG1
b
SG1
b
SG1
OSD
BLK
OUT a a
OUT a a
OUT a
SG6bSG6
− − −− − −−−−− − 0.8 1.0 1.2 −
OUT a
SG6bSG6
− − −− − −−−−− − 0.8 1.0 1.2 −
OUT a
SG6
− − −− − −−−−− − -0.15 0 0.15 VP-P
OUT a
OUT
b
SG1
SG6
SG6
Variable
OUT a a a
OUT a a a
OUT a a a
OUT a a a
SonG IN
aaaaa
Sync OUT
SonG IN
aaaaa
Sync OUT
Sync OUT
aaaaa
Sync OUT
aaaaa
Sync OUT
aaaaa
4,9,13
1
OSD
in
aa
aa
aa
aa
aa
aa
b
SG6
b
SG6
b
b
b
a
b
b
SG6
Variable
b
a
Input
CP in27ReT
SG5
SG5
SG5
Variable
SG5
Variable
SG5
SG5
SG5
SG5
SG5
SG5
SG5
SG5
SG5
SG5
SG5
SG5
SG5
M52742SP
CTL
voltage
19
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
7
16
UNI
in
30
Bright
Vari
able
Vari
able
SOG
in
BLK
aaa
aaa
a a a 2.0 5.0
a a a 2.0 5.0 0.2 0.5 −µs
a a a 2.0 5.0 -0.3 0 0.3 V
a a a 2.0 5.0 -0.3 0 0.3 V
a a a 2.0 5.0 − 3.0 6.0 ns
a a a 2.0 5.0
a a a 2.0 5.0
a a a 2.0 5.0
a a a 2.0 5.0
a a a 2.0 5.0
a a a 2.0 5.0
b
a a 2.0 5.0
SG7
b
a a 2.0 5.0
SG7
b
a a 2.0 5.0
SG7
b
a a 2.0 5.0
SG7
Variable
b
a 2.0 5.0 −−0.02 VP-P
SG4
Variable
b
a 2.0 5.0 0.2 0.3 − VP-P
SG4
Variable
b
a 2.0 5.0 4.5 4.9 5.0 V
SG4
b
a 2.0 5.0 0 0.3 0.6 V
SG4
b
a 2.0 5.0 0 60 90 ns
SG4
15
ABL
5.0
5.0
00H
Main
Va
ria
ble
Va
ria
ble
cont
FFH
255
BUS CTL (H) Limits
01H
02H
03H
04H
05H
06H
07H
08H
Sub
cont
Sub
Sub
OSD
BLK
cont
cont
1
2
3
D/A
Adj
Adj
OUT
1
08H
8
0FH
15
08H
8
00H
0
08H
8
00H
0
0FH
15
06H
6
00H
0
08H
8
OUT
09H
D/A
D/A
D/A
OUT
OUT
2
3
4
0BH
INT
EXT
Min. Typ. Max.
− 1.7 − ns
− 2.8 − ns
1.0 1.5 2.0 V
− 3.0 6.0 ns
4.6 5.4 6.2 VP-P
2.8 3.3 3.8 VP-P
0 0.1 0.3 VP-P
2.2 2.7 3.2 V
2.2 2.7 3.2 V
1.7 2.0 2.3 V
0.7 1.0 1.3 V
0.1 0.4 0.7 V
1.0 1.5 2.0 V
Unit
5
Page 6
MITSUBISHI ICs (Monitor)
GV=20Log
VOUT
0.7
(dB)
VC1=20Log
VOUT
0.7
(dB)
PRELIMINARY
Notice:This is not a final specification.
Some parametric limits are subject to change.
BUS CONTROLLED 3-CHANNEL VIDEO PREAMP FOR CRT DISPLAY MONITOR
ELECTRICAL CHARACTERISTICS (cont.)
Symbol Parameter
TDS-R
VOH
VOL
IAO
DNL
∆Tr
∆Tf
UNI1
UNI2
Sync output
delay time2
D/A H output
voltage
D/A L output
voltage
D/A output
current range
D/A
nonlinearity
Relative pulse
characteristics1
Relative pulse
characteristics2
Uniformity
characteristics1
Uniformity
characteristics2
Test
point
2,6,11
(s)
Sync OUT
D/A
OUT
D/A
OUT
D/A
OUT
D/A
OUT
OUT
OUT
OUT
OUT
OSD
RGB
BLK
in
aaaaa
aaaaaaa 2.0 5.0
aaaaa
aaaaaaa 2.0 5.0
aaaaa
b
SG1
b
SG1
b
SG1
b
SG1
4,9,13
1
OSD
in
aa
aa
aa
aa
Input
CP in27ReT
SG5
SG5
SG5
SG5
M52742SP
CTL
voltage
15
ABL
5.0
5.0
00H
Main
Vari
Vari
C8H
cont
FFH
255
abl
e
abl
e
200
BLK
a
a
a
a
7
16
SOG
in
b
SG4
a
a
a
a
a
a
30
UNI
Bright
in
a 2.0 5.0 0 60 90 ns
a 2.0 5.0
a 2.0 5.0
Vari
a
able
Vari
a
able
b
SG6
2.0 5.0
2.5V
b
SG6
2.0 5.0 3.5 5 6.5 %
1.25V
19
b
b
b
b
BUS CTL (H) Limits
01H
02H
03H
04H
05H
06H
07H
08H
Sub
Sub
Sub
OSD
BLK
cont
cont
cont
1
2
3
FFH
FFH
FFH
255
255
255
C8H
C8H
C8H
200
200
200
Adj
Adj
OUT
00H000H0FFH
Vari
Vari
D/A
1
255
00H000H000H000H
abl
e
abl
e
FFH
255
OUT
Vari
Vari
09H
D/A
D/A
D/A
OUT
OUT
2
3
4
FFH
FFH
FFH
255
255
255
0
Vari
Vari
abl
abl
abl
e
e
e
Vari
Vari
abl
abl
abl
e
e
e
FFH
FFH
FFH
255
255
255
0BH
INT
EXT
Min. Typ. Max.
00H
4.5 5.0 5.5 VDC
0
0 0.5 1.0 VDC
-1.0 − 0.4 mA
-1.0 − 1.0 LSB
-0.8 0 0.8 ns
-0.8 0 0.8 ns
7 10 13 %
Unit
ELECTRICAL CHARACTERISTICS TEST METHOD
ICC1 Circuit current1
Measuring conditions are as listed in supplementary Table.
Mesured with a current meter at test point IA.
ICC2 Circuit current2
Measureing conditions are as listed in supplemtary Table.
Measured with a current meter at test point IB.
Vomax Output dynamic range
Decrease V30 gradually, and measure the voltage when the
waveform output is distorted. The voltage is called VOL.
Next, increase V30 gradually, and measure the voltage when the
top of waveform output is distorted. The voltage is called VOH.
Voltage Vomax is calculated by the equation below:
Vomax = VOH-VOL
(V)
VOH
5.0
Waveform output
VOL
0.0
Gv Maximum gain
Input SG1, and read the amplitude output at OUT (29, 32, 35). The
amplitude is called VOUT (29, 32, 35). Maximum gain G
V is
calculated by the equation below:
∆Gv Relative maximum gain
Relative maximum gain ∆G
V is calculated by the equation bellow:
∆GV= VOUT (29)/VOUT (32),
VOUT (32)/VOUT (35),
VOUT (35)/VOUT (29)
C1 Main contrast control characteristics1
V
Measureing the amplitude output at OUT (29, 32, 35). The
measuredvalue is called VOUT (29, 32, 35). Main contrast control
characterics V
∆V
C1 Main contrast control relative characteristics1
C1 is calculated by the equation bellow:
Relative characteristics ∆VC1 is calculated by the equation bellow:
∆VC1=VOUT (29)/VOUT (32),
VOUT (32)/VOUT (35),
VOUT (35)/VOUT (29)
Vimax Maximum input
Increase the input signal (SG2) amplitude gradually, starting from
700mV
P-P. Measure the amplitude of the input signal when the
output signal starts becoming distorted.
C2 Main contrast control characteristics2
V
Measuring condition and procedure are the same as described in
V
C1.
∆VC2 Main contrast control relative characteristics2
Measuring condition and procedure are the same as described in
∆VC1.
6
Page 7
MITSUBISHI ICs (Monitor)
PRELIMINARY
Notice:This is not a final specification.
Some parametric limits are subject to change.
BUS CONTROLLED 3-CHANNEL VIDEO PREAMP FOR CRT DISPLAY MONITOR
VC3 Main contrast control characteristics3
Measuring condition and procedure are the same as described in
V
C1.
∆VC3 Main contrast control relative characteristics3
Measuring condition and procedure are the same as described in
∆VC1.
SC1 Sub contrast control characteristics1
V
Measur the amplitude output at OUT (29, 32, 35). The measured
value is called VOUT (29, 32, 35). Sub contrast control
characteristics V
∆VSC1 Sub contrast control relative characteristics1
Relative characteristics ∆VSC1 is calculated by the equation below:
∆VSC1=VOUT (29)/VOUT (32),
SC2 Sub contrast control characteristics2
V
Measuring condition and procedure are the same as described in
V
SC1.
∆VSC2 Sub contrast control relative characteristics2
Measuring condition and procedure are the same as described in
∆VSC1.
SC3 Sub contrast control characteristics3
V
Measuring condition and procedure are the same as described in
V
SC1.
∆VSC3 Sub contrast control relative characteristics3
Measuring condition and procedure are the same as described in
∆VSC1.
VMSC Main/sub contrast control characteristics2
Measure the amplitude output at OUT (29, 32, 35). The measured
value is called VOUT (29, 32, 35). Main/Sub contrast control
characteristics VMSC1 is calculated by the equation below:
∆VMSC Main/sub contrast control relative characteristics2
Relative characteristics ∆VMSC1 is calculated by the equation
below:
∆VMSC1= VOUT (29)/VOUT (32),
SC1 is calculated by the equation below:
VOUT
VSC1=20Log
0.7
(dB)
VOUT (32)/VOUT (35),
VOUT (35)/VOUT (29).
VOUT
VMSC1=20Log
0.7
(dB)
VOUT (32)/VOUT (35),
VOUT (35)/VOUT (29)
M52742SP
ABL1 ABL control characteristics1
Measure the amplitude output at OUT (29, 32, 35). The measured
value is called VOUT (29, 32, 35), and is ttreated as ABL1.
∆ABL1 ABL control relative characteristics1
Relative characteristics ∆ABL1 is calculated by the equation below:
∆ABL1= VOUT (29)/VOUT (32),
VOUT (32)/VOUT (35),
VOUT (35)/VOUT (29)
ABL2 ABL control characteristics2
Measuring condition and procedure are the same as described in
ABL1.
∆ABL2 ABL control relative characteristics2
Measuring condition and procedure are the same as described in
∆ABL1.
B1 Brightness control characteristics1
V
Measure the DC voltage at OUT (29, 32, 35) with a voltmeter. The
measured value is called VOUT (29, 32, 35), and is ttreated as V
∆VB1 Brightness control relative characteristics1
Relative characteristics ∆VB1 is calculated by the difference in the
output between the channels.
∆VB1= VOUT (29)/VOUT (32),
VOUT (32)/VOUT (35),
VOUT (35)/VOUT (29)
B2 Brightness control characteristics2
V
Measuring condition and procedure are the same as described in
V
B1.
∆VB2 Brightness control relative characteristics2
Measuring condition and procedure are the same as described in
∆VB1.
B3 Brightness control characteristics3
V
Measuring condition and procedure are the same as described in
V
B1.
∆VB3 Brightness control relative characteristics3
Measuring condition and procedure are the same as described in
B1.
∆V
B1.
7
Page 8
MITSUBISHI ICs (Monitor)
PRELIMINARY
Notice:This is not a final specification.
Some parametric limits are subject to change.
BUS CONTROLLED 3-CHANNEL VIDEO PREAMP FOR CRT DISPLAY MONITOR
FC1 Frequency characteristics1 (f=50MHz)
First, SG3 to 1MHz is as input signal. Input a resister that is about
2kΩ to offer the voltage at input pins (2, 6, 11) in order that the bottom of input signal is 2.5V. Control the main contrast in order that
the amplitude of sine wave output is 4.0V
in order that the bottom of sine wave output is 2.0VP-P. By the same
way, measure the output amplitude when SG3 to 50MHz is as input
signal. The measured value is called VOUT (29, 32, 35). Frequency
characteristics F
FC1=20log (dB)
C1 (29, 32, 35) is calculated by the equation below:
VOUT V
Output amplitude when inputed SG3 (1MHz):4VP-P
∆FC1 Frequency relative characteristics1 (f=50MHz)
Relative characteristics ∆F
C1 is calculated by the difference in the
output between the channels.
C1' Frequency characteristics1 (f=150MHz)
F
Measuring condition and procedure are the same as described in
table, expect SG3 to 150MHz.
P-P. Control the brightness
P-P
M52742SP
C.T.2 Crosstalk2 (f=50MHz)
Input SG3 (50MHz) to pin6 only, and then measure the waveform
amplitude output at OUT (29, 32, 35). The measured value is called
VOUT (29, 32, 35). Crosstalk C.T.2 is calculated by the equation
below:
C.T.2=20 log
C.T.2' Crosstalk2 (f=150MHz)
Measuring condition and procedure are the same as described in
C.T.2, expect SG3 to 150MHz.
C.T.3 Crosstalk3 (f=50MHz)
Input SG3 (50MHz) to pin11 only, and then measure the waveform
amplitude output at OUT (29, 32, 35). The measured value is called
VOUT (29, 32, 35). Crosstalk C.T.3 is calculated by the equation
below:
C.T.3=20 log
VOUT (29, 32)
VOUT (35)
VOUT (29, 32)
VOUT (35)
(dB)
(dB)
∆FC1' Frequency relative characteristics1 (f=150MHz)
Relative characteristics ∆F
C1' is calculated by the difference in the
output between the channels.
C2 Frequency characteristics2 (f=150MHz)
F
SG3 to 1MHz is as input signal. Control the main contrast in order
that the amplitude of sine wave output is 1.0V
P-P. By the same way,
measure the output amplitude when SG3 to 150MHz is as input
signal.
The measured value is called VOUT (29, 32, 35). Frequency
characteristics FC2 (29, 32, 35) is calculated by the equation below:
VOUT V
FC1=20log (dB)
Output amplitude when inputed SG3 (1MHz):4VP-P
P-P
∆FC2 Frequency relative characteristics2 (f=150MHz)
Relative characteristics ∆F
C2 is calculated by the difference in the
output between the channels.
C.T.1 Crosstalk1 (f=50MHz)
Input SG3 (50MHz) to pin2 only, and then measure the waveform
amplitude output at OUT (29, 32, 35). The measured value is called
VOUT (29, 32, 35). Crosstalk C.T.1 is calculated by the equation
below:
C.T.1=20 log
VOUT (29, 32)
VOUT (35)
(dB)
C.T.1' Crosstalk1 (f=150MHz)
Measuring condition and procedure are the same as described in
C.T.1, expect SG3 to 150MHz.
C.T.3' Crosstalk3 (f=150MHz)
Measuring condition and procedure are the same as described in
C.T.3, expect SG3 to 150MHz.
Tr Pulse characteristics1 (4V
P-P)
Control the main contrast (00H) in order that the amplitude of output
signal is 4.0V
P-P.
Control the brightness (V30) in order that the Black level of output
signal is 2.0V.
Measure the time needed for the input pulse to rise from 10% to 90
% (Tr1) and for the output pulse to rise from 10% to 90% (Tr2) with
an active prove.
Pulse characteristics TR is calculated by the equations below :
TR= [(Tr2)2-(Tr1)2]
∆Tr Relative pulse characteristics1
Relative characteristics ∆Tr is calculated by the difference in the
output between the channels.
Tf Pulse characteristics2 (4V
P-P)
Measure the time needed for the input pulseto fall from 90% to 10%
(Tf1) and for the output pulse to fall from 90% to 10% (Tf2) with an
active prove.
Pulse characteristics TF is calculated by the equations below :
TR= [(Tf2)2-(Tf1)2]
8
Page 9
MITSUBISHI ICs (Monitor)
PRELIMINARY
Notice:This is not a final specification.
Some parametric limits are subject to change.
BUS CONTROLLED 3-CHANNEL VIDEO PREAMP FOR CRT DISPLAY MONITOR
∆Tf Relative pulse characteristics2
Relative characteristics ∆Tf is calculated by the difference in the
output between the channels.
100%
0%
Tf1 or Tf2Tr1 or Tr2
VthCP Clamp pulse threshold voltage
Turn down the SG5 input level gradually from 5.0V
the waveform output.
Measure the top level of input pulse when the output pedestal
voltage turn decrease with unstable.
WCP Clamp pulse minimum width
Decrease the SG5 pulse width gradually from 0.5µs, monitoring the
output. Measure the SG5 pulse width (a point of 1.5V) when the
output pedestal voltage turn decrease with unstable.
DCH Pedestal voltage temperature characteristics1
P
Measure the pedestal voltage at 25°C. The measured value is
called PDC1.
Measure the pedestal voltage at temperature of -20°C. The
measured value is called PDC2.
Pedestal voltage temperature characteristics 1 is calculated by the
equation below:
P
DCH=PDC1-PDC2
90%
10%
P-P, monitoring
M52742SP
∆Oaj1 OSD adjust control relative characteristics1
Relative characteristics ∆Oaj1 is calculated by the equation below:
∆Oaj1=VOUT (29)/VOUT (32),
VOUT (32)/VOUT (35),
VOUT (35)/VOUT (29)
Oaj2 OSD adjust control characteristics2
Measuring condition and procedure are the same as described in
Oaj1.
∆Oaj2 OSD adjust control relative characteristics2
Measuring condition and procedure are the same as described in
∆Oaj1.
OBLK OSD adjust control characteristics3
Measuring condition and procedure are the same as described in
Oaj1.
∆OBLK OSD adjust control relative characteristics3
Measuring condition and procedure are the same as described in
∆Oaj1.
VthOSD OSD input threshold voltage
Reduce the SG6 input level gradually, monitoring output. Measure
the SG6 level when the output reaches 0V. The measured value is
called VthOSD.
VthBLK OSD BLK input threshold voltage
Confirm that output signal is being blanked by the SG6 at the time.
Monitoring to output signal, decreasing the level of SG6. Measure
the top level of SG6 when the blanking period is disappeared. The
measured value is called VthBLK.
DCL Pedestal voltage temperature characteristics2
P
Measure the pedestal voltage at 25°C. The measured value is
called PDC1.
Measure the pedestal voltage at temperature of 75°C. The
measured value is called PDC3.
Pedestal voltage temperature characteristics 2 is calculated by the
equation below:
P
OTr OSD pulse characteristics1
Measure the time needed for the output pulse to rise from 10% to
90% (OTR) with an active prove.
OTf OSD pulse characteristics2
Measure the time needed for the output pulse to fall from 90% to
10% (OTF) with an active prove.
Oaj1 OSD adjust control characteristics1
Measure the amplitude output at OUT (29, 32, 35). The measured
value is called VOUT (29,32,35), and is treated as Oaj1.
9
DCL=PDC1-PDC3
HBLK1 Retrace BLK characteristics1
Measure the amplitude output is blanked by the SG7 at OUT (29,
32, 35). The measured value is called VOUT (29, 32, 35), and is
treated as HBLK1.
HBLK2 Retrace BLK characteristics2
Measure the amplitude output is blanked by the SG7 at OUT (29,
32, 35). The measured value is called VOUT (29, 32, 35), and is
treated as HBLK2.
HBLK3 Retrace BLK characteristics3
Measure the amplitude output is blanked by the SG7 at OUT (29,
32, 35). The measured value is called VOUT (29, 32, 35), and is
treated as HBLK3.
VthRET Retrace BLK input threshold voltage
Confirm that output signal is being blanked by the SG7 at the time.
Monitoring to output signal, decreasing the level of SG7. Measure
the top level of SG7 when the blanking period is disappeared. The
measured value is called VthRET.
Page 10
MITSUBISHI ICs (Monitor)
OUT
SG6
5VP-P (2.5VP-P)
VuniA
VuniB
Pedestal
voltage
PRELIMINARY
Notice:This is not a final specification.
Some parametric limits are subject to change.
BUS CONTROLLED 3-CHANNEL VIDEO PREAMP FOR CRT DISPLAY MONITOR
SS-NV SOG input maximum noize voltage
The sync's amplitude of SG4 be changed all white into all black,
increase from 0VP-P to 0.02VP-P. No pulse output permitted.
SS-SV SOG minimum input voltage
The sync's amplitude of SG4 be changed all white or all black,
decrease from 0.3VP-P to 0.2VP-P. Confirm no malfunction produced
by noise.
VSH Sync output hi level
Measure the high voltage at SyncOUT. The measured value is
treated as VSH.
VSL Sync output lo level
Measure the low voltage at SyncOUT. The measured value is
treated as VSL.
TDS-F Sync output delay time1
SyncOUT becomes High with sync part of SG4.
Measure the time needed for the front edge of SG4 sync to fall from
50% and for SyncOUT to rise from 50% with an active prove. The
measured value is treated as TDS-F, less than 90nsec.
TDS-R Sync output delay time2
Measure the time needed for the rear edge of SG4 sync to rise
from 50% and for SyncOUT to fall from 50% with an active prove.
The measured value is treated as TDS-R, less than 90nsec.
M52742SP
VOH D/A H output voltage
Measure the DC voltage at D/AOUT. The measured value is
ttreated as VOH.
VOL D/A L output voltage
Measure the DC voltage at D/AOUT. The measured value is
ttreated as VOL.
IAO D/A output current range
Electric current flow from the output of D/AOUT must be less than
1.0mA.
Electric current flow in the output of D/AOUT must be less than
0.4mA.
DNL D/A nonlinearity
The difference of differential non-linearity of D/AOUT must be less
than ±1.0LSB.
UNI1 Uniformity characteristics1
UNI2 Uniformity characteristics2
VuniA is amplitude output at OUT (29, 32, 35), when SG6 is low
voltage. VuniB is amplitude output at OUT (29, 32, 35), when SG6
is high voltage.
moduration ratio UNI (UNI2) is calculated by the equation below;
UNI1 (UNI2)=100⋅(VuniB/VuniA-1) (%)
SG4
SyncOUT
(50%)sync (50%)
Pedestal voltage
TDS-RTDS-F
10
Page 11
MITSUBISHI ICs (Monitor)
PRELIMINARY
Notice:This is not a final specification.
Some parametric limits are subject to change.
BUS CONTROLLED 3-CHANNEL VIDEO PREAMP FOR CRT DISPLAY MONITOR
I2C-BUS PROTOCOL
(1) Slave address
D7 D6 D5 D4 D3 D2 D1 R/W
11011100=DCH
(2) Slave receiver format
SLAVE ADDRESS SUB ADDRESS DATA BYTE
S
START condition
(3) Sub address byte and data byte format
Function bit
Main contrast 8 00H
Sub contrast R 8 01H
Sub contrast G 8 02H
Sub contrast B 8 03H
OSD level 4 04H
RE-BLK adjust 4 05H
D/A OUT1 8 06H
D/A OUT2 8 07H
D/A OUT3 8 08H
D/A OUT4 8 09H
Pedestal clamp INT/EXT SW 1 0BH
acknowledg STOP condition
sub
add.
M52742SP
AA
Data byte (top:byte format under:start condition)
D7 D6 D5 D4 D3 D2 D1 D0
A07 A06 A05 A04 A03 A02 A01 A00
01000000
A17 A16 A15 A14 A13 A12 A11 A10
10000000
A27 A26 A25 A24 A23 A22 A21 A20
10000000
A37 A36 A35 A34 A33 A32 A31 A30
10000000
−−−−A43 A42 A41 A40
00001000
−−−−A53 A52 A51 A50
00001000
A67 A66 A65 A64 A63 A62 A61 A60
10000000
A77 A76 A75 A74 A73 A72 A71 A70
10000000
A87 A86 A85 A84 A83 A82 A81 A80
10000000
A97 A96 A95 A94 A93 A92 A91 A90
10000000
−−−−−−−AB0
00000000
A
P
Notes) pedestal level INT/EXT SW
0→INT 1→EXT
11
Page 12
MITSUBISHI ICs (Monitor)
PRELIMINARY
Notice:This is not a final specification.
Some parametric limits are subject to change.
M52742SP
BUS CONTROLLED 3-CHANNEL VIDEO PREAMP FOR CRT DISPLAY MONITOR
TIMING REQUIREMENT OF I2C
Symbol Parameter Min. Max. Unit
VIL Input voltage LOW -0.5 1.5 V
VIH Input voltage HIGH 3.0 5.5 V
fSCL SCL clock frequency 0 100 kHz
tBUF Time the bus must be free before a new transmission can start 4.7 −µs
tHD:STA Hold time start condition. After this period the first clock pulse is generated 4.0 −µs
tLOW The LOW period of the clock 4.7 −µs
HIGH The HIGH period of the clock 4.0 −µs
t
tSU:STA Set up time for start condition (Only rerevant for a repeated start condition) 4.7 −µs
tHD:DAT
tSU:DAT Set-up time DATA 250 − ns
tr Rise time of both SDA and SCL − 1000 ns
tf Fall time of both SDA and SCL − 300 ns
tSU:STO Set-up time for stop condition 4.0 −µs
Hold time for I2C devices
0 −µs
TIMING DIAGRAM
tr, tf
tBUF
SDA
SCL
VIH
VIL
V
VIL
tHD:DATtSU:DATtHD:STA
IH
tLOW tHIGH
SSPS
tSU:STA
tSU:STO
12
Page 13
MITSUBISHI ICs (Monitor)
PRELIMINARY
Notice:This is not a final specification.
Some parametric limits are subject to change.
BUS CONTROLLED 3-CHANNEL VIDEO PREAMP FOR CRT DISPLAY MONITOR
INPUT SIGNAL
SG No. Signals
Pulse with amplitude of 0.7VP-P (f=30kHz). Video width of 25µs. (75%)
33µs
SG1
Video signal
(all white)
SG2
Video signal
(step wave)
SG3
Sine wave
(for freq. char.)
8µs
M52742SP
P-P
0.7V
0.7VP-P
(Amplitude is partially variable.)
Sine wave amplitude of 0.7VP-P.
f=1MHz, 50MHz, 150MHz (variable)
SG4
Video signal
(all white,
all black)
SG5
Clamp
pulse
SG6
OSD pulse
Video width of 25µs. (75%)
3µs
Pulse width and amplitude are variable.
0.5µs
5µs
5V
TTL
0.3VP-P
5V
TTL
all white or all black
variable.
Sync’s amplitude
is variable.
0.7VP-P
Amplitude is partially variable.
SG7
BLK pulse
13
5µs
5V
TTL
Amplitude is partially variable.
∗) f=30kHz
Page 14
MITSUBISHI ICs (Monitor)
N
PRELIMINARY
Notice:This is not a final specification.
Some parametric limits are subject to change.
BUS CONTROLLED 3-CHANNEL VIDEO PREAMP FOR CRT DISPLAY MONITOR
TEST CIRCUIT
OUT (35)
100
470
100µH
35
36
blk osd12V osd12Vgnd gnd gnd ablosd sync5V
13245 98101211 13 146 7 15 16 17 18
34
out f/b brt dac dac sda12V gndf/b f/boutout blk dac gnddac c/pscl
R G SonG B 12V UNI
OUT (32)
3233
470
b
SW27
D/A
OUT1
OUT (29)
V30
0 to 5V
31
29
30 2627 252324
SG7
a
470
28
M52742SP
D/A
OUT2
D/A
OUT3
D/A
OUT4
M52742SP
SCLSDA
b
SW19
22
202119
SG5
C/P I
a
47µ
SW1
A
a
IA
12V
IN (2)
3.3µ
SW2
b
SG6
IN (6)
IN
0.01µ
SW4
SG1
SG2
SG3
a
b
a
b
3.3µ
SW6
a
0.01µ
SW7
b
1µ
b
SG4
SW9
a
b
a
IN (11)
0.01µ
3.3µ
V15
SW11
a
∗ Condenser : 0.01µF (unless otherwise specified.)
SW13
a
b
: MEASURE POINT
b
0 to 5V
100k
SONG
47µ
SW16
a
SG6
b
A
Units Resistance : Ω
Capacitance : F
5V
SYNC
OUT
1k
B
I
14
Page 15
MITSUBISHI ICs (Monitor)
PRELIMINARY
Notice:This is not a final specification.
Some parametric limits are subject to change.
BUS CONTROLLED 3-CHANNEL VIDEO PREAMP FOR CRT DISPLAY MONITOR
TYPICAL CHARACTERISTICS
THERMAL DERATING
2800
2403
2400
2000
1600
1200
800
400
POWER DISSIPATION Pd (mW)
0
-20 0 25 50 75 100 125 150
AMBIENT TEMPERATURE Ta (°C)
1442
M52742SP
MAIN CONTRAST CONTROL CHARACTERISTICS
6
5
4
3
2
1
OUTPUT AMPLITUDE (VP-P)
0
00H
MAIN CONTRAST CONTROL DATA
Sub contrast: Max
FFH
SUB CONTRAST CONTROL CHARACTERISTICS
6
5
4
3
2
1
OUTPUT AMPLITUDE (VP-P)
0
00H
Main contrast: Max
FFH
SUB CONTRAST CONTROL DATA
ABL CHARACTERISTICS
6
5
4
BRIGHTNESS CONTROL CHARACTERISTICS
6
5
4
3
2
1
OUTPUT DC VOLTAGE (VDC)
0
0
2
BRIGHTNESS CONTROL VOLTAGE (VDC)
OSD ADJUST CONTROL CHARACTERISTICS
6
5
4
4
15
3
2
1
OUTPUT AMPLITUDE (VP-P)
0
0
Main contrast: Max
Sub contrast : Max
5
ABL CONTROL VOLTAGE (VDC)
3
2
1
OUTPUT AMPLITUDE (VP-P)
0
0H
FH
OSD ADJUST CONTROL DATA
Page 16
MITSUBISHI ICs (Monitor)
PRELIMINARY
Notice:This is not a final specification.
Some parametric limits are subject to change.
BUS CONTROLLED 3-CHANNEL VIDEO PREAMP FOR CRT DISPLAY MONITOR
SYNC ON GREEN INPUT MIN. PULSE WIDTH
SYNC DUTY (%)
7
100k
1µ
IN
12
10
8
6
4
2
0
0
(Video duty=75%)
Sync separate
normal operating range
INPUT SYNC AMPLITUDE (VP-P)
0.5
UNIFORMITY CHARACTERISTICS
12
10
8
6
4
MODURATION RATIO (%)
2
0
0
INPUT AMPLITUDE (VP-P)
M52742SP
2.5
2.01.51.00.5
16
Page 17
MITSUBISHI ICs (Monitor)
PRELIMINARY
Notice:This is not a final specification.
Some parametric limits are subject to change.
BUS CONTROLLED 3-CHANNEL VIDEO PREAMP FOR CRT DISPLAY MONITOR
APPLICATION EXAMPLE
110V
M52742SP
CRT
Cut Off Adj
100µH
5VTTL
100
3.3µ
35 313336
0.01µ
DAC OUT×4
TTL
5V
BLK IN
470
470 470
0 to 5V
0.01µ
2932 28 27 2324 22 202126 2534 30
0.01µ 0.01µ
0.01µ
0.01µ
(for retrace)
SDA
SCL
Clamp pulse
IN
19
M52742SP
1885 9 10 1413 15 171611 12372641
0.01µ
47µ
3.3µ
75
5VTTL
100k
1µ
0.01µ
75
0.01µ
47µ
5VTTL
3.3µ
0.01µ
0.01µ
0.01µ
5VTTL
0 to 5V
1k
47µ
75
ABL IN
Sync
Sep
OUT
Uniformity
IN
OSD IN (B)
OSD IN (G)
OSD IN (R)
BLK IN
(for OSD)
17
12V
5V
INPUT
(R)
∗
INPUT
(G)
∗ Circuit example of pin6 and pin7 same signal input
S
ONG
INPUT
INPUT
(B)
0.01µ
•FEED BACK IS
INTERNAL FEED BACK
47µ
Units Resistance : Ω
Capacitance : F
Page 18
MITSUBISHI ICs (Monitor)
PRELIMINARY
Notice:This is not a final specification.
Some parametric limits are subject to change.
M52742SP
BUS CONTROLLED 3-CHANNEL VIDEO PREAMP FOR CRT DISPLAY MONITOR
DESCRIPTION OF PIN
Pin No. Name DC voltage (V ) Peripheral circuit of pins Description of function
1 OSD BLK IN −
2
6
11
INPUT (R)
INPUT (G)
INPUT (R)
2.5
R
G
1
2
B
0.8mA
2k
2.7V
2k
⋅Input pulses
⋅Connected to GND if not
used.
⋅Clamped to about 2.5V
due to clamp pulses
from pin 19.
⋅Input at low impedance.
3.7 to 5V
1.7V
maximum
12
13
10
14
22
33
2.5V
0.3mA
3
8
CC1 (R)
V
VCC1 (G)
12 −
VCC1 (B)
CP
⋅Apply equivalent
voltage to 3 channels.
⋅Input pulses
4
9
OSD IN (R)
OSD IN (G)
−
OSD IN (B)
1k
4
3.7 to 5V
1.7V
maximum
⋅Connected to GND if not
0.5mA
5
GND 1 (R)
2.7V
used.
GND 1 (G)
GND 1 (B)
GND −
GND (5V)
GND 2
⋅SYNC ON GREEN
input pin for sync
separation.
Sync is negative.
7
INPUT
(S on G)
When open≈2.5V
1k
500
input signal at Pin7,
compare with the
reference voltage of
internal circuit in order to
3.2V
7
separate sync signal.
⋅When not used, set to
OPEN.
18
Page 19
MITSUBISHI ICs (Monitor)
PRELIMINARY
Notice:This is not a final specification.
Some parametric limits are subject to change.
M52742SP
BUS CONTROLLED 3-CHANNEL VIDEO PREAMP FOR CRT DISPLAY MONITOR
DESCRIPTION OF PIN (cont.)
Pin No. Name DC voltage (V ) Peripheral circuit of pins Description of function
2.5V
15 ABL IN When open 2.5V
16 Uniformity IN 5.75
1.2k
0.5mA
1.2k
20k
30k
15
200
20k
⋅ABL (Automatic Beam
Limitter) input pin.
Recommended voltage
range is 0 to 5V.
When ABL function is not
used, set to 5V.
⋅Uniformity input pin.
Recommended
amplitude range is 0 to
5V
P-P.
7.25V
16
17 VCC (5V) 5 −
18
19
S on G Sep
OUT
Clamp Pulse
IN
−
41k
−
19
2.2V
50k
5k
18
⋅Sync signal output pin,
Being of open collector
output type.
⋅Input pulses
2.5 to 5V
0.5V
maximum
⋅Input at low impedance.
0.15mA
20 SCL −
19
⋅SCL of I
2
C BUS
(Serial clock line)
20
2k
3V
VTH=2.3V
Page 20
MITSUBISHI ICs (Monitor)
PRELIMINARY
Notice:This is not a final specification.
Some parametric limits are subject to change.
M52742SP
BUS CONTROLLED 3-CHANNEL VIDEO PREAMP FOR CRT DISPLAY MONITOR
DESCRIPTION OF PIN (cont.)
Pin No. Name DC voltage (V ) Peripheral circuit of pins Description of function
50k
2
21 SDA −
23
24
25
D/A OUT −
26
⋅SDA of I
(Serial data line)
21
2k
3V
VTH=2.3V
⋅D/A output pin.
Output voltage range is
23
0 to 5V, Max output
current is 0.4mA.
C BUS
27
28
31
34
29
32
35
36 V
Retrace BLK
IN
EXT Feed
Back (B)
EXT Feed
Back (G)
EXT Feed
Back (R)
OUTPUT (B)
OUTPUT (G)
OUTPUT (R)
CC2
−
Variable
Variable
12
Impressed
50k
27
R
G
B
2.25V
⋅Input pulses
2.5 to 5V
0.5V
maximum
⋅Connected to GND if not
used.
35k
28
⋅A resistor is needed on
36
50
the GND side.
Set discretionally to
maximum 15mA,
depending on the
required driving capacity .
50
29
⋅Used to supply power to
output emitter follower
only.
20
Page 21
MITSUBISHI ICs (Monitor)
PRELIMINARY
Notice:This is not a final specification.
Some parametric limits are subject to change.
M52742SP
BUS CONTROLLED 3-CHANNEL VIDEO PREAMP FOR CRT DISPLAY MONITOR
DESCRIPTION OF PIN (cont.)
Pin No. Name DC voltage (V ) Peripheral circuit of pins Description of function
35k
30
Main
Brightness
−
APPLICATION METHOD FOR M52742SP
CLAMP PULSE INPUT
Clamp pulse width is recommended
above 15kHz, 1.0µsec
above 30kHz, 0.5µsec
above 64kHz, 0.3µsec.
The clamp pulse circuit in ordinary set is a long round about way,
and beside high voltage, sometimes connected to external terminal,
it is very easy affected by large surge.
Therefore, the Fig. shown right is recommended.
30
NOTICE OF APPLICATION
⋅ Make the nearest distance between output pin and pull down
resister.
⋅ Recommended pedestal voltage of IC output signal is 2V.
⋅It is recommended that
the IC be used between
pedestal voltage 2V and
3V.
19
EXT-FEED BACK
In case of application circuit example of lower figure, Set up R1, R2
which seems that the black level of the signal feedbacked from
Power AMP is 1V, when the bottom of output signal is 1V.
MAIN BRIGHTNESS
DC:1 to 5V
Pre Amp
INPUT R
M52742SP
R OUT PUT
Black level 1 to 5V
R Feed back
Black level 1 to 5V
Power Amp
Power Amp OUT
R1
R2
21
EXT-FEED BACK APPLICATION CIRCUIT
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