M52745SP [MITSUBISHI]
BUS CONTROLLED 3-CHANNEL VIDEO PREAMP FOR CRT DISPLAY MONITOR; 总线控制3路视频前置放大器CRT显示器
| 型号： | M52745SP |
| 厂家： | 
Mitsubishi Group |
| 描述： | BUS CONTROLLED 3-CHANNEL VIDEO PREAMP FOR CRT DISPLAY MONITOR |
| 文件： | 总21页 (文件大小：388K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MITSUBISHI ICs (Monitor)
M52745SP
BUS CONTROLLED 3-CHANNEL VIDEO PREAMP FOR CRT DISPLAY MONITOR
DESCRIPTION
M52745SP is semiconductor integrated circuit for CRT display
PIN CONFIGURATION (TOP VIEW)
monitor.
It includes OSD blanking, OSD mixing, retrace blanking, wide band
amplifer, brightness control, uniformity function.
Main/sub contrast and OSD adjust function can be controlled by I2C
bus.
32
31
30
29
28
27
26
25
24
23
22
21
20
19
1
2
3
4
5
6
7
8
9
VCC 12V(R)
BRIGHTNESS
OSD IN(R)
OSD IN(B)
OSD IN(G)
OUTPUT(R)
EXT FEED BACK(R)
VCC 12V(B)
FEATURES
OSD BLK IN
INPUT(R)
VCC 12V
NC
OUTPUT(B)
• Frequency band width: RGB.............................200MHz (at -3dB)
EXT FEED BACK(B)
OSD..............................................80MHz
GND
Input :RGB.............................................................0.7VP-P (typ.)
OSD..........................................3VP-P minimum (positive)
BLK (for OSD)..........................3VP-P minimum (positive)
Retrace BLK.............................3VP-P minimum (positive)
Output :RGB..........................................................5.5V P-P (max.)
OSD..............................................................5VP-P (max.)
• Main contrast and sub contrast can be controlled by I2C bus.
• Include internal and external pedestal clamp circuit
VCC 12V(G)
INPUT(B)
OUTPUT(G)
GND 10
EXT FEED BACK(G)
11
12
13
14
15
16
INPUT(G)
VCC 12V
RETRACE BLK IN
SDA
INPUT(SOG)
SOG SEP OUT
SCL
GND
STRUCTURE
Bipolar silicon monolithic IC
18 ABL IN
17
GND
CLAMP PULSE IN
VCC 5V
APPLICATION
CRT display monitor
Outline 32P4B
RECOMMENDED OPERATING CONDITION
Supply voltage range......................11.5 to 12.5V (V7, V12, V25, V29,V32)
4.5 to 5.5V (V17)
Rated supply voltage..................................12.0V (V7, V12, V25, V29,V32)
5.0V (V17)
MAJOR SPECIFICATION
Bus controlled 3ch video pre-amp with OSD mixing function and
retrace blanking function
1
MITSUBISHI ICs (Monitor)
M52745SP
BUS CONTROLLED 3-CHANNEL VIDEO PREAMP FOR CRT DISPLAY MONITOR
BLOCK DIAGRAM
2
MITSUBISHI ICs (Monitor)
M52745SP
BUS CONTROLLED 3-CHANNEL VIDEO PREAMP FOR CRT DISPLAY MONITOR
ABSOLUTE MAXIMUM RATINGS(Ta=25°C)
Symbol
VCC
Pd
Parameter
Ratings
13.0
Unit
Supply voltage
V
mW
Power dissipation
Ambient temperature
Storage temperature
Recommended supply
Voltage range
2358
°
C
Topr
-20 to +85
-40 to +150
12.0
Tstg
°C
V
Vopr
Vopr’
10.5 to 12.5
V
ELECTRICAL CHARACTERISTICS (VCC=12V, 5V, Ta=25°C, unless otherwise noted)
CTL
voltage
Input
16
CP in ReT
BLK
BUS CTL (H)
Limits
Test
point
(s)
Symbol
Parameter
Unit
2,3,4
OSD
in
00H 01H 02H 03H 04H 05H
Main Sub Sub Sub OSD INT
cont cont cont cont Adj EXT
5
OSD
BLK
13
SOG
in
6,9,11
RGB
in
22
18
1
ABL
Min. Typ. Max.
Bri-
ght
R
G
B
b
a
Circuit
FFH FFH FFH FFH 00H 00H
ICC1
IA
IB
a
a
a
a
a
a
a
a
a
a
a
4.0 5.0
4.0 5.0
-
-
110 130 mA
18 25 mA
255 255 255 255
0
0
current1
SG5
b
a
Circuit
current2
ICC2
SG5
b
SG2
b
a
Vari
5.0
Output
dynamic range
Vomax
OUT
6.0 8.0
1.6
-
-
VP-P
VP-P
able
SG5
b
IN
OUT
b
a
Maximum
input
64H
100
Vimax
a
a
a
2.0 5.0
2.0 5.0
-
SG2
Variable
SG5
b
SG1
b
a
Maximum
gain
FFH
255
Gv
OUT
-
a
-
a
-
a
-
17.1 17.7 19.4
0.8 1.0 1.2
dB
-
SG5
Relative max-
imum gain
˘ Gv
-
-
-
-
-
-
Main contrast
control
characteristics1
b
SG1
b
SG5
C8H
200
VC1
OUT
a
-
a
-
a
a
-
2.0 5.0
15.0 16.5 18.0
0.8 1.0 1.2
9.0 10.5 12.0
0.8 1.0 1.2
0.1 0.3 0.5
0.8 1.0 1.2
15.5 16.5 18.0
0.8 1.0 1.2
9.5 11.0 12.5
0.8 1.0 1.2
dB
-
Main contrast
control relative
characteristics1
˘ VC1
VC2
-
-
-
-
-
-
-
Main contrast
control
characteristics2
b
SG1
b
SG5
64H
100
OUT
a
-
a
-
a
-
a
-
2.0 5.0
dB
-
Main contrast
control relative
characteristics2
˘ VC2
VC3
-
-
-
-
-
-
Main contrast
control
characteristics3
b
SG1
b
SG5
14H
20
OUT
a
-
a
-
a
-
a
-
2.0 5.0
VP-P
Main contrast
control relative
characteristics3
˘ VC3
VSC1
˘ VSC1
VSC2
˘ VSC2
VSC3
˘ VSC3
-
-
-
-
-
-
-
Sub contrast
control
characteristics1
b
SG1
b
SG5
FFH C8H C8H C8H
255 200 200 200
OUT
a
-
a
-
a
-
a
-
2.0 5.0
dB
-
Sub contrast
control relative
characteristics1
-
-
-
-
-
-
-
-
-
Sub contrast
control
characteristics2
b
SG1
b
SG5
FFH 64H 64H 64H
255 100 100 100
OUT
a
-
a
-
a
-
a
-
2.0 5.0
dB
-
Sub contrast
control relative
characteristics2
-
OUT
-
-
-
-
-
-
-
-
-
Sub contrast
control
characteristics3
b
SG1
b
SG5
FFH 14H 14H 14H
255 20
a
-
a
-
a
-
a
-
2.0 5.0
0
0.2 0.5
VP-P
20
20
Sub contrast
control relative
characteristics3
-
-
-
-
-
-
-
-
0.8 1.0 1.2
-
3
MITSUBISHI ICs (Monitor)
M52742SP
BUS CONTROLLED 3-CHANNEL VIDEO PREAMP FOR CRT DISPLAY MONITOR
ELECTRICAL CHARACTERISTICS (cont.)
CTL
voltage
Input
BUS CTL (H)
Limits
Test
point
(s)
Symbol
Parameter
Main/sub
Unit
2,3,4
OSD
in
00H 01H 02H 03H 04H 05H
Main Sub Sub Sub OSD INT
cont cont cont cont Adj ENT
5
OSD
BLK
13
SOG
in
6,9,11
RGB
in
16
22
18
ABL
1
Bri-
ght
CP in ReT
BLK
Min. Typ. Max.
R
G
B
b
SG1
b
a
C8H C8H C8H C8H
200 200 200 200
VMSC contrast control OUT
a
a
a
2.0 5.0
3.4 4.0 4.6 VP-P
SG5
characteristics
Main/sub contrast
control relative
characteristics
˘ VMSC
ABL1
-
-
-
-
-
-
-
-
-
-
-
-
-
0.8 1.0 1.2
4.1 4.9 5.7 VP-P
0.8 1.0 1.2
1.5 2.0 2.5 VP-P
-
b
SG1
b
SG5
ABL control
characteristics1
FFH FFH FFH FFH
2.0 4.0
255 255 255 255
OUT
a
-
a
-
a
-
a
-
ABL control
relative
characteristics1
˘ ABL1
ABL2
-
OUT
-
-
-
-
-
-
b
SG1
b
SG5
ABL control
characteristics2
a
-
a
-
a
-
a
-
2.0 2.0
ABL control
relative
characteristics2
˘ ABL2
-
-
-
-
0.8 1.0 1.2
3.3 3.7 4.1
-
Brightness
control
characteristics1
b
SG5
VB1
OUT
a
a
-
a
-
a
-
a
-
4.0 5.0
V
Brightness
control relative
characteristics1
˘ VB1
VB2
-
-
-
-
-
-0.3
0
0.3
V
V
V
V
V
Brightness
control
characteristics2
b
SG5
OUT
a
-
a
-
a
-
a
-
a
-
2.0 5.0
1.5 1.8 2.1
Brightness
control relative
characteristics2
˘ VB2
VB3
-
OUT
-
-
-
-
-0.3
0
0.3
Brightness
control
characteristics3
b
SG5
a
-
a
-
a
-
a
-
a
-
1.0 5.0
0.7 0.9 1.1
Brightness
control relative
characteristics3
˘ VB3
-
-
-
-0.3
0
0.3
Frequency
characteristics1 OUT
(f=50MHz)
Va
b
SG3
a
5V
Vari
able
FC1
a
-
a
-
a
-
a
-
5.0 ria
-2.0
-1.0
-3.0
-1.0
0
0
0
0
2.5
1.0
3.0
1.0
dB
dB
dB
dB
dB
dB
ble
Frequency relative
characteristics1
(f=50MHz)
˘ FC1
FC1’
-
-
-
-
-
-
Frequency
characteristics1 OUT
(f=200MHz)
Va
b
SG3
a
5V
Vari
able
FFH FFH FFH 00H 00H
a
-
a
-
a
-
a
-
5.0 ria
255 255 255
0
0
ble
Frequency relative
characteristics1
(f=200MHz)
˘ FC1’
FC2
-
-
-
Frequency
characteristics2 OUT
(f=200MHz)
b
SG3
a
5V
Vari
able
a
-
a
-
a
-
a
-
5.0
-3.0 3.0 5.0
Frequency relative
characteristics2
(f=200MHz)
˘ FC2
-
-
-
-
-
-1.0
0
1.0
2bSG3
6a
11a
a
5V
Crosstalk 1
Vari
able
OUT(29)
OUT(32)
FFH
255
C.T.1
C.T.1’
C.T.2
C.T.2’
C.T.3
C.T.3’
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
5.0
-
-
-
-
-
-
-25 -20
-20 -15
-25 -20
dB
dB
dB
(f=50MHz)
2bSG3
6a
11a
a
5V
Crosstalk 1
(f=200MHz)
Vari
able
OUT(29)
OUT(32)
5.0
5.0
5.0
5.0
5.0
2a
6bSG3
11a
a
5V
Crosstalk 2
(f=50MHz)
Vari
able
OUT(29)
OUT(35)
2a
6bSG3
11a
a
5V
Crosstalk 2
(f=200MHz)
Vari
able
OUT(29)
OUT(35)
-20 -15 dB
-25 -20 dB
2a
6a
11bSG3
a
5V
Crosstalk 3
(f=50MHz)
Vari
able
OUT(32)
OUT(35)
2a
6a
11bSG3
a
5V
Crosstalk 3
(f=200MHz)
Vari
able
OUT(32)
OUT(35)
-20 -15
dB
4
MITSUBISHI ICs (Monitor)
M52745SP
BUS CONTROLLED 3-CHANNEL VIDEO PREAMP FOR CRT DISPLAY MONITOR
ELECTRICAL CHARACTERISTICS (cont.)
CTL
voltage
Input
16
CP in ReT
BLK
BUS CTL (H)
Limits
Test
point
(s)
Symbol
Parameter
Unit
2,3,4
OSD
in
00H 01H 02H 03H 04H 05H
Main Sub Sub Sub OSD INT
cont cont cont cont Adj ENT
5
OSD
BLK
13
SOG
in
6,9,11
RGB
in
22
18
1
ABL
Min. Typ. Max.
Bri-
ght
R
G
B
Pulse
Va
b
SG1
b
a
Vari
able
Tr
characteristics1 OUT
(4VP-P)
a
a
a
a
a
a
5.0 ria
-
2.8 3.6
ns
ns
SG5
ble
b
SG1
b
a
Relative pulse
OUT
Vari
able
Vari
able
˘
Tr
5.0
-0.8
-
0
2.8
0
0.8
3.6
0.8
characteristics1
SG5
Pulse
characteristics2
(4VP-P)
Va
b
b
a
Vari
able
a
a
a
a
a
a
ria
OUT
5.0
5.0
Tf
SG1
SG5
ns
ns
ble
Relative pulse
OUT
b
SG1
b
a
Vari
able
Vari
able
˘
Tf
-0.8
characteristics2
SG5
b
Clamp pulse
threshold
voltage
Clamp pulse
minimum
width
b
SG1
FFH
255
a
a
a
a
a
a
a
a
2.0 5.0
2.0 5.0
SG5
OUT
OUT
1.0 1.5 2.0
V
VthCP
WCP
Variable
b
b
SG1
0.2
-
µs
SG5
-
Variable
Pedestal voltage
b
SG1
b
SG5
temperature
PDCH
PDCL
V
V
OUT
OUT
OUT
-0.15
-0.15
0 0.15
0 0.15
a
a
a
a
a
a
a
a
a
2.0 5.0
2.0 5.0
characteristics1
Pedestal voltage
temperature
characteristics2
b
SG5
b
SG1
OSD pulse
characteristics1
b
SG5
b
SG6
a
a
a
a
a
a
a
a
a
2.0 5.0
2.0 5.0
2.0 5.0
-
-
3.0 6.0
3.0 6.0
ns
ns
OTr
OSD pulse
characteristics2
b
SG5
b
SG5
b
SG6
08H
8
a
b
OUT
OUT
OTf
Oaj1
OSD adjust control
characteristics1
b
0FH
15
4.6 5.4 6.2 VP-P
0.8 1.0 1.2
3.4 3.9 4.4 VP-P
0.8 1.0 1.2
SG6 SG6
OSD adjust control
relative
characteristics1
-
OUT
-
-
a
-
-
-
-
-
-
-
-
-
˘ Oaj1
Oaj2
-
OSD adjust control
characteristics2
b
SG5
b
b
08H
8
a
-
a
-
2.0 5.0
SG6 SG6
OSD adjust control
relative
characteristics2
-
-
-
-
-
-
-
˘ Oaj2
OBLK
˘ OBLK
OSD adjust control
characteristics3
b
SG5
00H
0
b
SG6
a
-
a
-
2.0 5.0
a
a
-
OUT
-
0
-0.1 -0.3 VP-P
0 0.15 VP-P
OSD adjust control
relative
characteristics3
-
-
-
-
-
-
-0.15
b
OSD input
VthOSD1 threshold
voltage1
OSD input
VthOSD2 threshold
voltage2
b
SG5
b
SG6
08H
8
a
a
a
a
2.0 5.0
3.1 3.5 3.9
V
SG6
OUT
Variable
b
b
SG5
b
SG6
a
a
a
a
2.0 5.0
2.0 5.0
1.5 2.0 2.5
SG6
V
V
V
OUT
OUT
Variable
b
OSD BLK input
threshold
voltage
b
SG5
b
SG1
00H
0
a
VthBLK
SG6
2.2 2.7 3.2
3.2 3.8 4.4
Variable
b
SG6
3V
OSD half
adjust control
characteristics1
b
SG5
b
SG6
a
00H
15
Ohaj1
Ohaj2
OUT
a
a
a
2.0 5.0
2.0 5.0
2.0 5.0
OSD half
adjust control
characteristics2
b
SG6
3V
b
SG5
b
SG6
08H
8
a
a
a
b
OUT
OUT
2.3 2.7 3.1
1.0 1.5 2.0
V
V
Retrace BLK
b
SG5
00H 08H
0
VthRET input threshold
a
a
a
a
a
b
SG7
8
Variable
voltage
SOG input
SonG IN
Sync OUT
SS-NV maximum
noise voltage
a
a
a
2.0 5.0
SG4
-
-
0.03 VP-P
Variable
SOG
SS-SV minimum
input voltage
b
SonG IN
Sync OUT
a
a
a
a
a
a
a
a
a
a
SG4
2.0 5.0
2.0 5.0
-
-
0.2
VP-P
Variable
b
SG4
Sync output
Sync OUT
VSH
4.5 4.9 5.0
V
hi level
5
MITSUBISHI ICs (Monitor)
M52745SP
Symbol
VSL
BUS CONTROLLED 3-CHANNEL VIDEO PREAMP FOR CRT DISPLAY MONITOR
ELECTRICAL CHARACTERISTICS (cont.)
CTL
voltage
TDS-F
TDS-R
lccps
Input
BUS CTL (H)
Limits
Test
point
(s)
Parameter
Unit
V
2,3,4
OSD
in
00H 01H 02H 03H 04H 05H
Main Sub Sub Sub OSD INT
cont cont cont cont Adj ENT
5
OSD
BLK
13
SOG
in
6,9,11
RGB
in
16
22
18
1
CP in ReT
BLK
ABL
Min. Typ. Max.
Bri-
ght
R
G
B
b
SG4
Sync output
lo level
Sync OUT
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
2.0 5.0
2.0 5.0
2.0 5.0
4.0 5.0
2.0 5.0
0
0
0
0.3 0.6
60 90
60 90
SKV
b
SG4
Sync output
delay time1
Sync OUT
Sync OUT
ns
ns
b
SG4
Sync output
delay time2
Power save
circult current
b
SG5
FFH FFH FFH FFH 00H 00H
255 255 255 255
Ips
a
a
-
22 30 mA
0
0
12V
Spot killer
voltage
b
SG1
b
SG5
FFH FFH FFH FFH 00H 00H
255 255 255 255
system
9.4 10.0 10.4
V
0
0
voltage
ELECTRICAL CHARACTERISTICS TEST METHOD
Gv Maximum gain
Input SG1, and read the amplitude output at OUT (24, 28, 31). The
amplitude is called VOUT (24, 28, 31). Maximum gain GV is
calculated by the equation below:
ICC1 Circuit current1
Measuring conditions are as listed in supplementary Table.
Measured with a current meter at test point IA.
VOUT
0.7
(dB)
GV=20Log
ICC2 Circuit current2
Gv Relative maximum gain
Measuring conditions are as listed in supplementary Table.
Relative maximum gain DGV is calculated by the equation bellow:
˘ GV= VOUT (24)/VOUT (28),
Measured with a current meter at test point IB.
Vomax Output dynamic range
Decrease V1 gradually, and measure the voltage when the
VOUT (28)/VOUT (31),
VOUT (31)/VOUT (24)
waveform output is distorted. The voltage is called VOL.
Next, increase V1 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:
VC1 Main contrast control characteristics1
Measuring the amplitude output at OUT (24, 28, 31). The
measured value is called VOUT (24, 28, 31). Main contrast control
Vomax = VOH-VOL
(V)
characterics VC1 is calculated by the equation bellow:
VOUT
(dB)
VC1=20Log
0.7
VOH
VC1 Main contrast control relative characteristics1
Relative characteristics ˘ VC1 is calculated by the equation bellow:
˘ VC1=VOUT (24)/VOUT (28),
5.0
Waveform output
VOUT (28)/VOUT (31),
VOL
0.0
VOUT (31)/VOUT (24)
VC2 Main contrast control characteristics2
Vimax Maximum input
Measuring condition and procedure are the same as described in
Increase the input signal (SG2) amplitude gradually, starting from
VC1.
700mVP-P. Measure the amplitude of the input signal when the
output signal starts becoming distorted.
VC2 Main contrast control relative characteristics2
Measuring condition and procedure are the same as described in
˘ VC1.
6
MITSUBISHI ICs (Monitor)
M52745SP
BUS CONTROLLED 3-CHANNEL VIDEO PREAMP FOR CRT DISPLAY MONITOR
VC3 Main contrast control characteristics3
ABL1 ABL control characteristics1
Measuring the amplitude output at OUT (24, 28, 31).
The measured value is called VOUT (24, 28, 31).
Measure the amplitude output at OUT (24,28,31). The measured
value is called VOUT (24,28,31), and is treated as ABL1.
˘ VC3 Main contrast control relative characteristics3
Measuring condition and procedure are the same as described in
˘ VC1.
˘ ABL1 ABL control relative characteristics1
Relative characteristics ˘ ABL1 is calculated by the equation below:
˘ ABL1= VOUT (24)/VOUT (28),
VOUT (28)/VOUT (31),
VOUT (31)/VOUT (24)
VSC1 Sub contrast control characteristics1
Measure the amplitude output at OUT (24,28,31). The measured
value is called VOUT (24, 28, 31). Sub contrast control
characteristics VSC1 is calculated by the equation below:
ABL2 ABL control characteristics2
Measuring condition and procedure are the same as described in
ABL1.
VOUT
0.7
(dB)
VSC1=20Log
˘ ABL2 ABL control relative characteristics2
Measuring condition and procedure are the same as described in
˘ ABL1.
˘ VSC1 Sub contrast control relative characteristics1
Relative characteristics ˘ VSC1 is calculated by the equation below:
˘ VSC1=VOUT (24)/VOUT (28),
VOUT (28)/VOUT (31),
VB1 Brightness control characteristics1
VOUT (31)/VOUT (24).
Measure the DC voltage at OUT (24, 28, 31) with a voltmeter. The
measured value is called VOUT (24, 28, 31), and is treated as VB1.
VSC2 Sub contrast control characteristics2
Measuring condition and procedure are the same as described in
˘ VB1 Brightness control relative characteristics1
Relative characteristics ˘ VB1 is calculated by the difference in the
output between the channels.
VSC1.
˘ VSC2 Sub contrast control relative characteristics2
˘ VB1= VOUT (24)-VOUT (28),
Measuring condition and procedure are the same as described in
˘ VSC1.
VOUT (28)-VOUT (31),
VOUT (31)-VOUT (24)
VSC3 Sub contrast control characteristics3
Measuring the amplitude output at OUT (24,28,31).
VB2 Brightness control characteristics2
The measured value is called VOUT (24, 28, 31).
Measuring condition and procedure are the same as described in
VB1.
˘ VSC3 Sub contrast control relative characteristics3
Measuring condition and procedure are the same as described in
˘ VSC1.
˘ VB2 Brightness control relative characteristics2
Measuring condition and procedure are the same as described in
˘ VB1.
VMSC Main/sub contrast control characteristics
Measure the amplitude output at OUT (24, 28, 31). The measured
value is called VOUT (24, 28, 31). Main/Sub contrast control
characteristics VMSC is calculated by the equation below:
VB3 Brightness control characteristics3
Measuring condition and procedure are the same as described in
VB1.
VOUT
0.7
(dB)
VMSC =20Log
˘ VB3 Brightness control relative characteristics3
Measuring condition and procedure are the same as described in
˘ VB1.
˘ VMSC Main/sub contrast control relative characteristics
Relative characteristics VMSC is calculated by the equation
˘
below:
VMSC = VOUT (24)/VOUT (28),
VOUT (28)/VOUT (31),
˘
VOUT (31)/VOUT (24)
7
MITSUBISHI ICs (Monitor)
M52745SP
BUS CONTROLLED 3-CHANNEL VIDEO PREAMP FOR CRT DISPLAY MONITOR
FC1 Frequency characteristics1 (f=50MHz)
C.T.2 Crosstalk2 (f=50MHz)
First, SG3 to 1MHz is as input signal. Input a resister that is about
2k‰to offer the voltage at input pins (6, 9, 11) in order that the bot-
tom of input signal is 2.5V. Control the main contrast in order that
the amplitude of sine wave output is 4.0VP-P. Control the brightness
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 (24, 28, 31). Frequency
characteristics FC1 (24, 28, 31 ) is calculated by the equation below:
Input SG3 (50MHz) to pin6 only, and then measure the waveform
amplitude output at OUT (24, 28, 31). The measured value is called
VOUT (24, 28, 31). Crosstalk C.T.2 is calculated by the equation
below:
VOUT (24, 31)
VOUT (28)
C.T.2=20 log
(dB)
C.T.2' Crosstalk2 (f=150MHz)
VOUT VP-P
Measuring condition and procedure are the same as described in
C.T.2, expect SG3 to 150MHz.
FC1=20log
(dB)
Output amplitude when inputted SG3 (1MHz):4VP-P
˘ FC1 Frequency relative characteristics1 (f=50MHz)
C.T.3 Crosstalk3 (f=50MHz)
Relative characteristics ˘ FC1 is calculated by the difference in the
output between the channels.
Input SG3 (50MHz) to pin11 only, and then measure the waveform
amplitude output at OUT (24, 28, 31). The measured value is called
VOUT (24, 28, 31). Crosstalk C.T.3 is calculated by the equation
below:
FC1' Frequency characteristics1 (f=150MHz)
Measuring condition and procedure are the same as described in
VOUT (28, 31)
VOUT (24)
C.T.3=20 log
(dB)
table, expect SG3 to 150MHz.
˘ FC1' Frequency relative characteristics1 (f=150MHz)
C.T.3' Crosstalk3 (f=150MHz)
Relative characteristics ˘ FC1' is calculated by the difference in the
Measuring condition and procedure are the same as described in
C.T.3, expect SG3 to 150MHz.
output between the channels.
FC2 Frequency characteristics2 (f=150MHz)
Tr Pulse characteristics1 (4VP-P)
SG3 to 1MHz is as input signal. Control the main contrast in order
Control the main contrast (00H) in order that the amplitude of output
that the amplitude of sine wave output is 1.0VP-P. By the same way,
measure the output amplitude when SG3 to 150MHz is as input
signal.
signal is 4.0VP-P.
Control the brightness (V1) in order that the Black level of output
signal is 2.0V.
The measured value is called VOUT (24, 28, 31). Frequency
characteristics FC2 (24, 28, 31) is calculated by the equation below:
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 probe.
VOUT VP-P
FC2=20log
(dB)
Output amplitude when inputted SG3 (1MHz):4VP-P
Pulse characteristics Tr is calculated by the equations below :
Tr = [(Tr2)2-(Tr1) ]
2
˘ FC2 Frequency relative characteristics2 (f=150MHz)
˘
Relative characteristics FC2 is calculated by the difference in the
˘ Tr Relative pulse characteristics1
output between the channels.
Relative characteristics ˘ Tr 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
Tf Pulse characteristics2 (4VP-P)
amplitude output at OUT (24, 28, 31). The measured value is called
VOUT (24, 28, 31). Crosstalk C.T.1 is calculated by the equation
below:
Measure the time needed for the input pulse to fall from 90% to 10%
(Tf1) and for the output pulse to fall from 90% to 10% (Tf2) with an
active prove.
VOUT (24, 31)
C.T.1=20 log
(dB)
Pulse characteristics Tf is calculated by the equations below :
VOUT (28)
Tf = [(Tf2)2-(Tf1)2]
C.T.1' Crosstalk1 (f=150MHz)
Measuring condition and procedure are the same as described in
C.T.1, expect SG3 to 150MHz.
8
MITSUBISHI ICs (Monitor)
M52745SP
BUS CONTROLLED 3-CHANNEL VIDEO PREAMP FOR CRT DISPLAY MONITOR
Tf Relative pulse characteristics2
Oaj1 OSD adjust control relative characteristics1
Relative characteristics ˘ Oaj1 is calculated by the equation below:
Relative characteristics ˘ Tf is calculated by the difference in the
output between the channels.
˘ Oaj1=VOUT (24)/VOUT (28),
VOUT (28)/VOUT (31),
VOUT (31)/VOUT (24)
100%
90%
Oaj2 OSD adjust control characteristics2
Measuring condition and procedure are the same as described in
10%
Oaj1.
0%
Tr1 or Tr2
Tf1 or Tf2
Oaj2 OSD adjust control relative characteristics2
Measuring condition and procedure are the same as described in
VthCP Clamp pulse threshold voltage
˘ Oaj1.
Turn down the SG5 input level gradually from 5.0VP-P, monitoring
the waveform output.
OBLK OSD adjust control characteristics3
Measuring condition and procedure are the same as described in
Measure the top level of input SG5 at when the output pedestal
level is start to going down or unstable.
Oaj1.
OBLK OSD adjust control relative characteristics3
Measuring condition and procedure are the same as described in
WCP Clamp pulse minimum width
Decrease the SG5 pulse width gradually from 0.5 µs, monitoring the
output. Measure the input SG5 pulse width (a point of 1.5V)
when the output pedestal voltage turm decrease with unstable.
˘ 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.
PDCH Pedestal voltage temperature characteristic1
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.
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.
Pedestal voltage temperature characteristics 1 is calculated by the
equation below:
PDCH =PDC1-PDC2
DCH
P
Pedestal voltage temperature characteristic2
Measure the pedestal voltage at 25°C. The measured value is
called PDC1.
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.
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:
DCH
P
=PDC1-PDC3
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 (24, 28, 31). The measured
value is called VOUT (24, 28, 31), and is treated as Oaj1.
9
MITSUBISHI ICs (Monitor)
M52745SP
BUS CONTROLLED 3-CHANNEL VIDEO PREAMP FOR CRT DISPLAY MONITOR
SS-NV SOG input maximum noise voltage
VOH D/A H output 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.
Measure the DC voltage at D/AOUT. The measured value is
treated as VOH.
SS-SV SOG minimum input voltage
VOL D/A L output 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.
Measure the DC voltage at D/AOUT. The measured value is
treated as VOL.
IAO D/A output current range
Electric current flow from the output of D/AOUT must be less than
VSH Sync output hi level
1.0mA.
Measure the high voltage at SyncOUT. The measured value is
treated as VSH.
Electric current flow into the output of D/AOUT must be more
than 0.1mA .
VSL Sync output lo level
Measure the low voltage at SyncOUT. The measured value is
treated as VSL.
DNL D/A nonlinearity
The difference of differential non-linearity of D/AOUT must be less
than ±1.0LSB.
TDS-F Sync output delay time1
SyncOUT becomes High with sync part of SG4.
UNI1 Uniformity characteristics1
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.
UNI1 Uniformity characteristics2
VuniA is amplitude output at OUT (24, 28, 31), when SG6 is low
voltage. VuniB is amplitude output at OUT (24, 28, 31), when SG6
is high voltage.
TDS-R Sync output delay time2
moduration ratio UNI (UNI2) is calculated by the equation below;
UNI1 (UNI2)=100 • (VuniB/VuniA-1) (%)
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.
SG4
Pedestal voltage
VuniB
VuniA
OUT
sync (50%)
TDS-F
(50%)
Pedestal
voltage
SyncOUT
TDS-R
5VP-P (2.5VP-P)
SG6
10
MITSUBISHI ICs (Monitor)
M52745SP
BUS CONTROLLED 3-CHANNEL VIDEO PREAMP FOR CRT DISPLAY MONITOR
I2C-BUS PROTOCOL
(1) Slave address
D7
1
D6
D5
0
D4
0
D3
1
D2
0
D1
0
R/W
0
=88H
0
(2) Slave receiver format
S
SLAVE ADDRESS
SUB ADDRESS
DATA BYTE
A
A
A
P
START condition
acknowledge
STOP condition
(3) Sub address byte and data byte format
Function
Data byte (top:byte format under:start condition)
sub
add.
bit
D7
A07
0
D6
A06
1
D5
A05
0
D4
A04
0
D3
A03
0
D2
A02
0
D1
A01
0
D0
A00
0
Main contrast
8
8
8
8
4
1
00H
A17
1
A16
0
A15
0
A14
0
A13
0
A12
0
A11
0
A10
0
Sub contrast R
01H
02H
03H
04H
05H
A27
1
A26
0
A25
0
A24
0
A23
0
A22
0
A21
0
A20
0
Sub contrast G
A37
1
A36
0
A35
0
A34
0
A33
0
A32
0
A31
0
A30
0
Sub contrast B
-
-
-
-
A43
1
A42
A41
A40
0
OSD level
0
0
0
0
0
-
0
-
-
-
-
-
-
A50
0
Pedestal clamp INT/EXT SW
0
0
0
0
0
0
0
Notes) pedestal level INT/EXT SW
0
INT
1
EXT
11
MITSUBISHI ICs (Monitor)
M52745SP
BUS CONTROLLED 3-CHANNEL VIDEO PREAMP FOR CRT DISPLAY MONITOR
TIMING REQUIREMENT OF I2C
Symbol
Parameter
Min.
-0.5
3.0
0
Max.
Unit
V
VIL
Input voltage LOW
Input voltage HIGH
SCL clock frequency
1.5
VIH
5.5
V
fSCL
100
kHz
µs
µs
µs
µs
µs
µs
ns
ns
ns
µs
tBUF
Time the bus must be free before a new transmission can start
Hold time start condition. After this period the first clock pulse is generated
The LOW period of the clock
4.7
4.0
4.7
4.0
4.7
0
-
tHD:STA
tLOW
tHIGH
tSU:STA
tHD:DAT
tSU:DAT
tr
-
-
The HIGH period of the clock
-
Set up time for start condition (Only relevant for a repeated start condition)
Hold time for I2C devices
-
-
-
Set-up time DATA
250
-
Rise time of both SDA and SCL
1000
300
-
tf
Fall time of both SDA and SCL
-
tSU:STO
Set-up time for stop condition
4.0
TIMING DIAGRAM
tBUF
tr, tf
VIH
SDA
VIL
tSU:STA
tSU:STO
tHD:STA
tSU:DAT
tHD:DAT
VIH
SCL
VIL
tLOW
tHIGH
S
S
P
S
12
MITSUBISHI ICs (Monitor)
M52745SP
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)
8µs
0.7VP-P
SG2
Video signal
(step wave)
0.7VP-P
(Amplitude is variable.)
SG3
Sine wave
(for freq. char.)
Sine wave amplitude of 0.7VP-P.
f=1MHz, 50MHz, 200MHz (variable)
Video width of 25µs. (75%)
SG4
all white or all black
variable.
0.7VP-P
Video signal
(all white,
all black)
Sync’s amplitude
0.3VP-P
3µs
is variable.
Pulse width and amplitude are variable.
0.5µs
SG5
Clamp
pulse
5VTTL
SG6
OSD pulse
Amplitude is variable.
or
5VTTL
3VTTL
5µs
SG7
BLK pulse
5VTTL
Amplitude is variable.
5µs
) f=30kHz
*
13
MITSUBISHI ICs (Monitor)
M52745SP
BUS CONTROLLED 3-CHANNEL VIDEO PREAMP FOR CRT DISPLAY MONITOR
TEST CIRCUIT
A
IB
SG7
2K
SCL
SDA
OUT (31)
1K
OUT (28)
1K
OUT (24)
1K
V18
2K
2K
0 to 5V
b
a
SW22
47µ
32
31
30
f/b
27
25
19
18
17
29
28
26
23
f/b
22
21
20
scl
24
R
G
sda
gnd
B
12V
12V
f/b
gnd
12V
blk
abl
5V
out
out
out
M52745SP
osd
B
osd
G
osd
blk
osd
R
SonG
13
R
6
gnd
10
12V
12
sync
14
gnd
15
c/p
16
blk
1
12V
7
B
9
NC
8
G
2
3
4
5
11
100K
2K
SonG
IN
IN (6)
1K
IN (11)
3.3µ
IN (9)
0.01µ
0 to 5V
V1
3.3µ
0.01µ
SYNC
OUT
C/P
IN
0.01µ
2K3.3µ
1µ
2K
SW3
a
b
SW2
a
SW4 SW5 SW6
SW11
a
SW13
a
SW16
b
SW9
a
a
a
a
a
b
b
b
b
b
b
b
IA
SG5
A
47µ
12V
SG1
SG2
SG3
SG6
SG4
: MEASURE POINT
Capacitor : 0.01µF (unless otherwise specified.)
*
Units Resistance : ‰
Capacitance : F
14
MITSUBISHI ICs (Monitor)
M52745SP
BUS CONTROLLED 3-CHANNEL VIDEO PREAMP FOR CRT DISPLAY MONITOR
TYPICAL CHARACTERISTICS
THERMAL DERATING
MAIN CONTRAST CONTROL CHARACTERISTICS
2800
6
2400
2358
5
4
3
2
2000
1600
1200
800
400
0
1226
1
Sub contrast: Max
0
00H
-20
0
25
50 75
100 125 150
85
FFH
AMBIENT TEMPERATURE Ta ( °C)
MAIN CONTRAST CONTROL DATA
SUB CONTRAST CONTROL CHARACTERISTICS
BRIGHTNESS CONTROL CHARACTERISTICS
6
6
5
4
3
2
5
4
3
2
1
0
1
Main contrast: Max
0
00H
0
2
4
FFH
SUB CONTRAST CONTROL DATA
BRIGHTNESS CONTROL VOLTAGE (VDC)
OSD ADJUST CONTROL CHARACTERISTICS
ABL CHARACTERISTICS
6
6
5
4
3
2
1
0
5
4
3
2
1
0
Main contrast: Max
Sub contrast : Max
0H
FH
0
5
OSD ADJUST CONTROL DATA
ABL CONTROL VOLTAGE (VDC)
15
MITSUBISHI ICs (Monitor)
M52745SP
BUS CONTROLLED 3-CHANNEL VIDEO PREAMP FOR CRT DISPLAY MONITOR
SYNC ON GREEN INPUT MIN. PULSE WIDTH
12
(Video duty=75%)
10
8
Sync separate
normal operating range
6
4
2
7
100k
0
1m
0
0.5
INPUT SYNC AMPLITUDE (VP-P)
IN
16
MITSUBISHI ICs (Monitor)
M52745SP
BUS CONTROLLED 3-CHANNEL VIDEO PREAMP FOR CRT DISPLAY MONITOR
APPLICATION EXAMPLE
CRT
110V
Cut Off Adj
DAC IC
5VTTL
BLK IN
(for retrace)
1K
1K
27
1K
23
SDA
0.01µ
0.01µ
4.7µ
4.7µ
0.01µ
4.7µ
SCL
0 to 5V
ABL IN
32
31
30
29
28
26
25
24
22
21
20
19
18
17
M52745SP
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
100K
NC
1k
0.01µ
0.01µ
Sync Sep
1µ
OUT
4.7µ
4.7µ
0 to 5V
Clamp Pulse
IN
3.3µ
3.3µ
3.3µ
0.01µ
0.01µ
0.01µ
75
75
75
5VTTL
5VTTL
BLK IN
5VTTL
(for OSD)
2.5VTTL
OSD IN (G)
5VTTL
2.5VTTL
OSD IN (B)
OSD IN (G)
2.5VTTL
0.01µ
4.7µ
12V
•FEED BACK IS
INTERNAL FEED BACK
INPUT
(B)
INPUT
(R)
INPUT
(G)
5V
SON
INPUT
G
Units Resistance : ‰
Capacitance : F
17
MITSUBISHI ICs (Monitor)
M52745SP
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
R
G
•Input pulses
3.7 to 5V
5
5
OSD BLK IN
-
B
GND to1.7V
0.4mA
•Connected to GND if not
used.
2.7V
2k
2k
•Clamped to about 2.5V
due to clamp pulses
from pin 16.
6
9
11
INPUT (R)
INPUT (B)
INPUT (G)
2.5
•Input at low impedance.
2.5V
CP
0.3mA
•Apply equivalent
voltage to 3 channels.
7
12
12
-
VCC
•Input pulses
1k
4.0 to 5V
2.5 to 3V
2
3
4
OSD IN (R)
OSD IN (B)
OSD IN (G)
-
GND to 1.5V
•Connected to GND if not
used.
2.0V
3.5V
1mA
10
15
19
26
GND
-
GND
17
•SYNC ON GREEN
input pin for sync
separation.
Sync is negative.
input signal at Pin7,
compare with the
reference voltage of
internal circuit in order to
separate sync signal.
•When not used, set to
OPEN.
INPUT
(S on G)
500
13
When open¯2.5V
1k
3.2V
13
18
MITSUBISHI ICs (Monitor)
M52745SP
BUS CONTROLLED 3-CHANNEL VIDEO PREAMP FOR CRT DISPLAY MONITOR
DESCRIPTION OF PIN (cont.)
Pin No.
Name
DC voltage (V )
When open 2.5V
Peripheral circuit of pins
Description of function
2.5V
20k
30k
•ABL (Automatic Beam
Limiter) input pin.
Recommended voltage
range is 0 to 5V.
When ABL function is not
used, set to 5V.
18
ABL IN
1.2k
1.2k
0.5mA
18
17
14
VCC (5V)
5
-
-
14
•Sync signal output pin,
Being of open collector
output type.
S on G Sep
OUT
41k
•Input pulses
2.5 to 5V
-
16
Clamp Pulse
IN
GND to 0.5V
16
•Input at low impedance.
2.2V
0.15mA
17
50k
•SCL of I2C BUS
(Serial clock line)
VTH=2.3V
20
SCL
-
20
2k
3V
19
MITSUBISHI ICs (Monitor)
M52745SP
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
17
50k
2
•SDA of I
C BUS
SDA
-
(Serial data line)
VTH=2.3V
21
21
2k
3V
•Input pulses
50k
R
G
B
2.5 to 5V
Retrace BLK
IN
22
-
GND to 0.5V
22
•Connected to GND if not
used.
2.25V
35k
EXT Feed
Back (G)
EXT Feed
Back (B)
EXT Feed
Back (R)
23
27
30
Variable
•A resistor is needed on
the GND side.
Set discretionally to
maximum 15mA,
depending on the
required driving capacity.
24
28
31
OUTPUT (G)
OUTPUT (B)
OUTPUT (R)
50
Variable
50
25
29
32
•Used to supply power to
output emitter follower
only.
VCC2
12
20
MITSUBISHI ICs (Monitor)
M52745SP
BUS CONTROLLED 3-CHANNEL VIDEO PREAMP FOR CRT DISPLAY MONITOR
DESCRIPTION OF PIN (cont.)
Pin No.
Name
DC voltage (V )
Peripheral circuit of pins
35k
Description of function
•It is recommended that
the IC be used between
pedestal voltage 2V and
3V.
1
-
Brightness
1
APPLICATION METHOD FOR M52745SP
NOTICE OF APPLICATION
•Make the nearest distance between output pin and pull down
resistor.
CLAMP PULSE INPUT
Clamp pulse width is recommended
•Recommended pedestal voltage of IC output signal is 2V.
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.
16
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.
Power Amp
MAIN BRIGHTNESS
DC:1 to 5V
Power Amp OUT
Pre Amp
INPUT R
R OUT PUT
Black level 1 to 5V
R1
R Feed back
Black level 1 to 5V
R2
EXT-FEED BACK APPLICATION CIRCUIT
21
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