MITSUBISHI M52746SP

MITSUBISHI< LINEAR IC >
M52746SP
BUS CONTROLLED 3CH VIDEO PRE-AMP FOR CRT DISPLAY MONITOR
DISCRIPTION
M52746SP is Semiconductor Integrated Circuit
for CRT Display Monitor.
It includes OSD Blanking,OSD Mixing,Retrace
Blanking,Wide Band Amplifre,Brightness Control.
Main/Sub Contrast and OSD AdjustFunction can be
controlled by I2C Bus.
FEATURES
Frequency Band Width: RGB 200 MHz (at -3dB)
OSD 80 MHz
Input
: RGB
0.7 Vp-p (Typ)
OSD light
4 Vp-p minimum (positive)
OSD harf
2.5Vp-p minimum (positive)
3.0Vp-p maximum (positive)
BLK(for OSD) 3 Vp-p minimum (positive)
Retrace BLK
3 Vp-p minimum (positive)
Output : RGB
5.5 Vp-p (maximum)
OSD
5 Vp-p (maximum)
PIN CONFIGURATION
Brightness
OSD IN (R)
OSD IN (B)
OSD IN (G)
OSD BLK IN
INPUT (R)
VCC 12V
NC
INPUT (B)
GND
INPUT (G)
VCC 12V
INPUT(SOG)
SOG Sep OUT
GND
Clamp Pulse IN
1
2
3
4
5
32
31
30
29
28
6
7
8
9
10
11
12
27
26
25
24
23
22
21
20
19
18
17
13
14
15
16
VCC 12V (R)
OUTPUT(R)
GND(R)
VCC 12V (B)
OUTPUT(B)
GND(B)
GND
VCC 12V (G)
OUTPUT(G)
GND(G)
Retrace BLK IN
SDA
SCL
GND
ABL IN
VCC 5V
Outside Package: 32P4B
Main Contrast and Sub Contrast can be controlled by I2C
Bus.
STRUCTURE
Bipola Silicon Monolisic IC
APPLICATION
32 pin plastic SDIP
CRT Display Monitor
RECOMMENDED OPERATING CONDITIONS
Supply Voltage Range
11.5V~12.5V(V7,V12,V25,V29,V32)
4.5V~4.4V(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
MITSUBISHI
1
25
MITSUBISHI< LINEAR IC >
M52746SP
BUS CONTROLLED 3CH VIDEO PRE-AMP FOR CRT DISPLAY MONITOR
Absolute Maximum Rating (Ambient temperature: 25 C)
Parameter
Symbol
Rating
Unit
Supply voltage 12
Vcc12
13.0
V
Supply voltage 5
Vcc 5
6.0
V
2358
mW
Power dissipation
Pd
Ambient temperature
Topr
-20~ +75
C
Storage temperature
Tstg
-40~ +150
C
Recommended supply 12
Vopr 12
12.0
V
Recommended supply
Vopr 5
5.0
V
5
voltage range 12
Vopr' 12
10.5~12.5 ( Typ 12.0V )
V
voltage range 5
Vopr' 5
4.5~5.5 ( Typ 5.0V )
V
Case temperature
C/W
28
jc
Thermal Derating Curve
2800
2400
2358
2000
1600
1415
1200
800
attached
board
400
-20
0
25
50
75
100
125
150
Ambient temperature Ta( C)
MITSUBISHI
2
25
MITSUBISHI< LINEAR IC >
M52746SP
BUS CONTROLLED 3CH VIDEO PRE-AMP FOR CRT DISPLAY MONITOR
Fig. 1
Block Diagram
MITSUBISHI
3
25
MITSUBISHI< LINEAR IC >
M52746SP
BUS CONTROLLED 3CH VIDEO PRE-AMP FOR CRT DISPLAY MONITOR
BUS CONTROL TABLE
(1) Slave address:
D7
D6
D5
D4
D3
D2
D1
R/W
1
0
0
0
1
0
0
0
=88H
(2) Each function's sub address:
NO.
1
2
3
4
5
function
Main contrast
Sub contrast R
Sub contrast G
Sub contrast B
OSD level
bit
8
8
8
8
4
Data Byte(up:bit information down:preset)
sub
add. D7
00H A07
01H
02H
03H
04H
D6
D5
D4
D3
D2
D1
D0
A06
A05
A04
A03
A02
A01
A00
0
1
0
0
0
0
0
0
A17
A16
A15
A14
A13
A12
A11
A10
1
0
0
0
0
0
0
0
A27
A26
A25
A24
A23
A22
A21
A20
1
0
0
0
0
0
0
0
A37
A36
A35
A34
A33
A32
A31
A30
1
0
0
0
0
0
0
0
-
-
-
-
A43
A42
A41
A40
0
0
0
0
1
0
0
0
MITSUBISHI
4
25
MITSUBISHI< LINEAR IC >
M52746SP
BUS CONTROLLED 3CH VIDEO PRE-AMP FOR CRT DISPLAY MONITOR
2
I C BUS CONTROL SECTION
SDA,SCL CHARACTERISTICS
symbol
parameter
MIN
MAX
unit
min. input LOW voltage.
VIL
-0.5
1.5
V
max. input HIGH voltage.
VIH
3.0
5.5
V
SCL clock frequency.
fSCL
0
100
KHz
Time the bus must be free before a new transmission can start.
tBUF
4.7
-
us
Hold time start condition.After this period the first clock pulse
is generated.
tHD:STA
4.0
-
us
The LOW period of the clock.
tLOW
4.7
-
us
The HIGH period of the clock.
tHIGH
4.0
-
us
Srt up time for start condition. (Only relevant for a repeated
start condition.)
tSU:STA
4.7
-
us
Hold time DATA.
tHD:DAT
0
-
us
Set-up time DATA.
tSU:DAT
250
-
ns
Rise time of both SDA and SCL lines.
tR
-
1000
ns
Fall time of both SDA and SCL lines.
tF
-
300
ns
Set-up time for stop condition.
tSU:STO
4.0
-
us
tR, tF
tBUF
VIL
SDA
VIH
tHD:STA
tHD:DAT
tSU:DAT
tSU:STA
tSU:ST
O
VIL
SCL
VIH
tLOW
S
tHIGH
S
MITSUBISHI
P
S
5
25
Gv
Maximum gain
Relative
maximum gain
4
5
6
16
Sub contrast
control relative
characteristics 2
Sub contrast
control
characteristics 2
Sub contrast
control relative
characteristics 1
14
15
Sub contrast
control
characteristics 1
Main contrast
control relative
characteristics3
13
12
Main contrast
control
characteristics 3
Main contrast
control relative
characteristics 2
10
11
Main contrast
control
characteristics 2
Main contrast
control relative
characteristics 1
9
8
VSC2
VSC2
VSC1
VSC1
VC3
VC3
VC2
VC2
VC1
VC1
Gv
Maximum input
3
Main contrast
control
characteristics 1
IN
OUT
Output dynamic
Vomax
range
Vimax
Circuit current2
2
7
OUT
Icc2
Circuit current1
1
-
OUT
-
OUT
-
OUT
-
OUT
-
OUT
-
OUT
IB
IA
Icc1
parameter
No
Symbol Test
Point(s)
a
a
a
b
SG5
b
SG5
b
SG5
a
-
b
SG1
-
b
SG1
-
b
SG1
-
b
SG1
-
b
AG1
-
B
SG1
Variable
b
SG2
b
SG2
a
-
a
-
a
-
a
-
a
-
a
-
a
a
a
a
a
-
a
-
a
-
a
-
a
-
a
-
a
a
a
a
a
-
b
SG5
-
b
SG5
-
b
SG5
-
b
SG5
-
b
SG5
-
b
SG5
b
SG5
-
a
-
a
-
a
-
a
-
a
-
a
a
-
a
-
a
-
a
-
a
-
a
-
a
a
a
a
a
13
5 2 3 4
SOG
OSD
ReT
RGB In BLK OSD In CP In BLK In
22
16
7 9 11
Input
-
2.0
-
2.0
-
2.0
-
2.0
-
2.0
-
2.0
2.0
Variable
4.0
4.0
FFH FFH FFH FFH 00H
Sub Sub Sub
Main cont cont cont OSD
cont R
G
B Adj
00H 01H 02H 03H 04H
BUS CTL ( H )
64H
-
-
-
-
-
-
-
-
FFH 64H 64H 64H
-
5.0 255 100 100 100
-
FFH C8H C8H C8H
-
14H
20
-
5.0 255 200 200 200
-
5.0
-
64H
-
5.0 100
-
C8H
-
5.0 200
-
FFH
5.0 255
5.0 100
5.0
5.0
5.0 255 255 255 255 0
Bright ABL
1
18
CTL voltage
Supplementary Table1 Electrical Characteristics (Vcc= 12V,5V; Ta= 25 C unless otherwise specified)
0.8
9.0
0.8
15.5
0.8
0.1
0.8
9.0
0.8
15.0
0.8
17.1
1.6
6.0
-
-
1.0
12.0
1.0
16.5
1.0
0.5
1.0
10.5
1.0
16.5
1.0
17.7
-
8.0
18
110
1.2
13.0
1.2
19.0
1.2
0.8
1.2
13.0
1.2
19.0
1.2
19.4
-
-
35
135
MIN TYP MAX
Standard
-
dB
-
dB
-
Vp-p
-
dB
-
dB
-
dB
Vp-p
Vp-p
mA
mA
Unit
Note16
Note15
Note14
Note13
Note12
Note11
Note10
Note9
Note8
Note7
Note6
Note5
Note4
Note3
Note2
Note1
Remark
parameter
ABL control
Main/sub contrast
control relative
characteristics
Main/sub
contrast control
characteristics
Sub contrast
control relative
characteristics 3
VMSC
VMSC
VSC3
VSC3
ABL control
ABL control
relative
characteristics 1
ABL1
Brightness
control
characteristics 2
Brightness
control relative
characteristics 2
27
28
Frequency
32
Frequency relative
characteristics 1
(f=50MHz)
(f=50MHz)
31 characteristics 1
30
Brightness
control
characteristics 3
Brightness
control relative
characteristics 3
Brightness
control relative
characteristics 1
26
29
VB1
Brightness
control
characteristics 1
25
FC1
FC1
VB3
VB3
VB2
VB2
VB1
ABL2
ABL control
relative
characteristics2
24
23 characteristics 2 ABL2
22
21 characteristics 1 ABL1
20
19
18
Sub contrast
control
17
characteristics 3
No
-
-
-
a
b
SG3
OUT
-
-
-
a
-
a
-
a
-
a
-
a
-
a
-
a
b
SG1
OUT
-
OUT
-
OUT
-
OUT
-
-
a
b
SG1
OUT
a
-
a
-
b
SG1
-
b
SG1
-
-
Input
16
22
-
a
-
a
-
a
-
a
-
a
-
a
-
a
-
a
-
a
5V
-
b
SG5
-
b
SG5
-
b
SG5
-
b
SG5
-
b
SG5
-
b
SG5
-
b
SG5
-
a
-
a
-
a
-
a
-
a
-
a
-
a
-
a
-
a
-
a
-
a
-
a
-
a
-
a
-
a
-
a
13
5 2 3 4
SOG
OSD
ReT
RGB In BLK OSD In CP In BLK In
7 9 11
-
OUT
-
OUT
Symbol Test
Point(s)
-
Variable
-
1.0
-
2.0
-
4.0
-
2.0
-
2.0
-
2.0
-
2.0
-
5.0
-
5.0
-
5.0
-
5.0
-
2.0
-
4.0
-
5.0
-
5.0
Bright ABL
1
18
CTL voltage
-
-
-
-
-
-
-
Vari
able
FFH FFH FFH FFH
255 255 255 255
-
C8H C8H C8H C8H
200 200 200 200
-
FFH 14H 14H 14H 00H
255 20 20 20 0
Sub Sub Sub
Main cont cont cont OSD
cont R
G
B Adj
00H 01H 02H 03H 04H
BUS CTL ( H )
-1.0
-2.0
-0.3
0.5
-0.3
1.5
-0.3
3.3
0.8
1.7
0.8
4.7
0.8
3.6
0.8
0.1
0
0
0
0.9
0
1.8
0
3.8
1.0
2.2
1.0
5.5
1.0
4.6
1.0
0.5
1.0
2.5
0.3
1.1
0.3
2.1
0.3
4.2
1.2
2.7
1.2
6.3
1.2
4.8
1.2
0.8
MIN TYP MAX
Standard
dB
dB
-
V
-
V
-
V
-
Vp-p
-
Vp-p
-
Vp-p
-
Vp-p
Unit
Note32
Note31
Note30
Note29
Note28
Note27
Note26
Note25
Note24
Note23
Note22
Note21
Note20
Note19
Note18
Note17
Remark
CT2'
CT3
Crosstalk 2
(f=200MHz)
Crosstalk 3
(f=50MHz)
40
41
Pulse
48
47
45
Pedestal voltage
temperature
characteristics 2
Pedestal voltage
temperature
characteristics 1
PDCL
PDCH
OUT
OUT
OUT
OUT
OUT
b
SG1
b
SG1
a
a
a
b
SG1
a
a
a
a
a
a
a
a
a
-
a
-
a
b
SG1
b
SG1
b
SG1
2a
OUT(32) 6 a
OUT(35) 11b SG3
2a
OUT(32) 6 a
OUT(35) 11b SG3
2a
OUT(29) 6 b SG3
OUT(35) 11a
2a
OUT(29) 6 b SG3
OUT(35) 11a
Clamp pulse
46 minimum width WCP
Tf
-
b
SG3
-
b
SG3
2 b SG3
OUT(29) 6 a
OUT(32) 11a
OUT
Clamp pulse
threshold
voltage
Pulse
characteristics 2
(4Vp-p)
Tr
Input
16
22
a
a
a
a
a
a
a
a
a
a
a
a
-
a
-
a
b
SG5
b
SG5
Variable
b
SG5
Variable
b
SG5
a
5V
a
a
a
a
a
a
a
5V
a
a
a
a
a
a
-
a
-
a
a
5V
a
5V
a
5V
a
5V
a
5V
a
5V
-
a
5V
-
a
5V
a
a
a
a
a
a
a
a
a
a
a
a
-
a
-
a
13
5 2 3 4
SOG
OSD
ReT
RGB In BLK OSD In CP In BLK In
7 9 11
2 b SG3
OUT(29) 6 a
OUT(32) 11a
-
OUT
-
OUT
VthCP
44
(4Vp-p)
43 characteristics 1
CT3'
CT2
Crosstalk 2
(f=50MHz)
39
Crosstalk 3
(f=200MHz)
CT1'
Crosstalk 1
(f=200MHz)
38
42
CT1
FC2
FC2
FC1'
FC1'
Crosstalk 1
(f=50MHz)
Frequency relative
characteristics 2
(f200MHz)
Frequency
characteristics
2 (f=200MHz)
Frequency relative
characteristics 1
(f=200MHz)
Frequency
characteristics
1 (f=200MHz)
parameter
37
36
35
34
33
No
Symbol Test
Point(s)
2.0
2.0
2.0
2.0
Variable
Variable
Variable
Variable
Variable
Variable
Variable
Variable
Variable
Variable
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
Bright ABL
1
18
CTL voltage
FFH
255
Varia
ble
Varia
ble
FFH
255
Varia FFH FFH FFH 00H
ble 255 255 255 0
Sub Sub Sub
Main cont cont cont OSD
cont R
G
B Adj
00H 01H 02H 03H 04H
BUS CTL ( H )
-3.0
-3.0
0.2
1.0
-
-
-
-
-
-
-
-
-1.0
-3.0
-1.0
-3.0
-
0
0
1.5
2.2
2.2
-20
-25
-20
-25
-20
-25
0
3.0
0
0
0.3
0.3
-
2.0
2.8
2.8
-15
-20
-15
-20
-15
-20
1.0
5.0
1.0
3.0
MIN TYP MAX
Standard
V
V
uS
V
nS
nS
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
Unit
Note48
Note47
Note46
Note45
Note44
Note43
Note42
Note41
Note40
Note39
Note38
Note37
Note36
Note35
Note34
Note33
Remark
OSD adjust
control
characteristics 2
OSD adjust
control relative
characteristics 2
64
63
62
61
VthOSD2
VthOSD1
Oaj3
Oaj3
Oaj2
Oaj2
Oaj1
Oaj1
Ohaj2
OUT
OUT
OUT
OUT
OUT
SOG minimum SS - SV
input voltage
S on G IN
Sync OUT
a
a
a
a
a
b
SG1
a
a
-
-
-
a
-
a
a
a
a
OUT
Input
16
22
a
a
a
b
SG6
b
SG6
Variable
b
SG6
b
SG6
b
SG6
-
b
SG6
-
b
SG6
-
b
SG6
a
a
a
a
a
b
SG6
3V
b
SG6
3V
a
Variable
b
SG6
Variable
b
SG6
-
b
SG6
-
b
SG6
-
b
SG6
b
SG6
b
SG6
a
a
a
a
a
-
a
-
a
-
a
a
a
a
a
a
a
b
SG4
a
a
a
a
a
a
-
a
-
a
-
a
a
a
Variable
b
SG4
Variable
b
b
SG7
SG5 Variable
b
SG5
b
SG5
b
SG5
b
SG5
b
SG5
-
b
SG5
-
b
SG5
-
b
SG5
b
SG5
b
SG5
13
5 2 3 4
SOG
OSD
ReT
RGB In BLK OSD In CP In BLK In
7 9 11
OUT
-
OUT
-
OUT
OUT
OUT
SOG input
maximum noize SS - NV S on G IN
Sync OUT
voltage
Retrace BLK i
nput threshold
VthRET
voltag
OSD half adjust
control
characteristics 2
Ohaj1
OSD BLK input
threshold
VthBLK
voltage
OSD input
threshold
voltage 2
OSD input
threshold
voltage 1
OSD half adjust
control
60 characteristics 1
59
58
57
55
OSD adjust
control
characteristics 3
OSD adjust
control relative
56 characteristics 3
54
53
52 characteristics 1
OSD adjust
control relative
OSD adjust
control
characteristics 1
OTf
OSD pulse
characteristics 2
50
51
OTr
49
parameter
OSD pulse
characteristics 1
No
Symbol Test
Point(s)
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
-
2.0
-
2.0
-
2.0
2.0
2.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
-
5.0
-
5.0
-
5.0
5.0
00H
0
08H
8
0FH
15
00H
0
08H
8
08H
8
-
00H
0
-
08H
8
-
0FH
15
08H
8
FFH FFH FFH FFH 08H
Sub Sub Sub
Main cont cont cont OSD
cont R
G
B Adj
00H 01H 02H 03H 04H
BUS CTL ( H )
5.0 255 255 255 255 8
Bright ABL
1
18
CTL voltage
0.2
-
1.0
1.9
3.7
2.2
1.5
3.1
0.8
0
0.8
3.4
0.8
5.6
-
-
-
-
1.5
2.5
4.3
2.7
2.0
3.5
1.0
0.7
1.0
4.0
1.0
6.4
3.0
3.0
-
0.03
2.0
3.0
4.9
3.2
2.5
3.9
1.2
1.2
1.2
4.6
1.2
7.2
6.0
6.0
MIN TYP MAX
Standard
Note50
Note49
Remark
Note52
Note54
Note60
Note59
Note58
Note57
Note56
Note62
Vp-p Note64
Vp-p Note63
V
Vp-p Note61
Vp-p
V
V
V
-
Vp-p Note55
-
Vp-p Note53
-
Vp-p Note51
ns
ns
Unit
Sync Output Lo
Level
66
Icc
(power save
mode)
Sync Output
Delay Time2
spot killer
70 function voltage
69
68
Sync Output
Delay Time1
Sync Output Hi
Level
65
67
parameter
No
skv
Iccps
TDS-R
TDS-F
VSL
VSH
Vcc
(12V)
Ips
Sync
OUT
Sync
OUT
Sync
OUT
Sync
OUT
Symbol Test
Point(s)
Input
16
22
b
SG
1
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
b
SG
5
b
SG
5
a
a
a
a
a
a
a
a
a
a
a
a
b
SG4
b
SG4
b
SG4
b
SG4
13
5 2 3 4
SOG
OSD
ReT
RGB In BLK OSD In CP In BLK In
7 9 11
2.0
4.0
2.0
2.0
2.0
2.0
FFH FFH FFH FFH 00H
Sub Sub Sub
Main cont cont cont OSD
cont R
G
B Adj
00H 01H 02H 03H 04H
BUS CTL ( H )
FFH FFH FFH FFH 00H
5.0 255 255 255 255 0
5.0 255 255 255 255 0
5.0
5.0
5.0
5.0
Bright ABL
1
18
CTL voltage
9.4
-
0
0
0
4.5
10.0
22
60
60
0.3
4.9
10.4
30
90
90
0.6
5.0
MIN TYP MAX
Standard
Note69
Note68
Note67
Note66
Note65
Remark
VDC Note70
mA
ns
ns
V
V
Unit
MITSUBISHI< LINEAR IC >
M52746SP
BUS CONTROLLED 3CH VIDEO PRE-AMP FOR CRT DISPLAY MONITOR
Note1)
Measuring conditions are as listed in supplementary Table. Measured with a current
meter at test point IA.
Note2)
Measuring conditions are as listed in supplementary Table. Measured with a current
meter at test point IB.
Note3)
Decrease V1 gradually, and measure the voltage when the bottom of waveform output is
distorted. The voltage is called VCL.
Next, increase V1 gradually, and measure the voltage when the top of waveform output is
distorted. The voltage is called VOH.
Voltagr Vomax is calculated by the equation below:
Vomax = VOH - VOL
(V)
VOH
5.0
Waveform output
VOL
0.0
Note4)
Increase the input signal(SG2) amplitude gradually, starting from 700mVp-p. Measure the
amplitude of the input signal when the output signal starts becoming distorted.
Note5)
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:
VOUT
GV=20 LOG
(dB)
0.7
Note6)
Relative maximum gain GV is calculated by the equation below:
GV=VOUT(24)/VOUT(18), VOUT(28)/VOUT(31), VOUT(31)/VOUT(24)
Note7)
Measuring the amplitude output at OUT(24,28,31). The measured value is called
VOUT(24,28,31).
Main contrast conrol characteristics VC1 is calculated by the equation below:
VOUT
VC1=20 LOG
(dB)
0.7
Note8)
Relative characteristics VC1 is calculated by the equation below:
VC1=VOUT(24)/VOUT(28) , VOUT(28)/VOUT(31) , VOUT(31)/VOUT(24)
Note9) Measuring condition and procedure are the same as described in Note7.
Note10) Measuring condition and procedure are the same as described in Note8.
Note11) Measuring condition and procedure are the same as described in Note7.
Note12) Measuring condition and procedure are the same as described in Note8.
MITSUBISHI
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MITSUBISHI< LINEAR IC >
M52746SP
BUS CONTROLLED 3CH VIDEO PRE-AMP FOR CRT DISPLAY MONITOR
Note13) Measure the amplitude output at OUT(24,28,31). The measured value is called
VOUT(24,28,31).
Sub contrast conrol characteristics VSC1 is calculated by the equation below:
VOUT
VSC1=20 LOG
(dB)
0.7
Note14) Relative characteristics VSC1 is calculated by the equation below:
VSC1=VOUT(24)/VOUT(28) , VOUT(28)/VOUT(31) , VOUT(31)/VOUT(24)
Note15) Measuring condition and procedure are the same as described in Note13.
Note16) Measuring condition and procedure are the same as described in Note14.
Note17) Measuring condition and procedure are the same as described in Note13.
Note18) Measuring condition and procedure are the same as described in Note14.
Note19) Measure the amplitude output at OUT(24,28,31). The measured value is called
VOUT(24,28,31).
Main/Sub contrast conrol characteristics VMSC1 is calculated by the equation below:
VOUT
VMSC1=20 LOG
(dB)
0.7
Note20) Relative characteristics VMSC1 is calculated by the equation below:
VMSC=VOUT(24)/VOUT(28) , VOUT(28)/VOUT(31) , VOUT(31)/VOUT(24)
Note21) Measure the amplitude output at OUT(24,28,31). The measured value is called
VOUT(24,28,31), and is ttreated as ABL1.
Note22) Relative characteristics ABL1 is calculated by the equation below:
ABL1=VOUT(24)/VOUT(28) , VOUT(28)/VOUT(31) , VOUT(31)/VOUT(24)
Note23) Measuring condition and procedure are the same as described in Note21.
Note24) Measuring condition and procedure are the same as described in Note22.
Note25) Measure the DC voltage at OUT(24,28,31) with a voltmeter. The measured value is called
VOUT(24,28,31), and is ttreated as VB1.
Note26) Relative characteristics VB1 is calculated by the difference in the output between the
channels.
VB1=VOUT(24)-VOUT(28) , VOUT(28)-VOUT(31) , VOUT(31)-VOUT(24)
Note27) Measuring condition and procedure are the same as described in Note25.
Note28) Measuring condition and procedure are the same as described in Note26.
Note29) Measuring condition and procedure are the same as described in Note25.
Note30) Measuring condition and procedure are the same as described in Note26.
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MITSUBISHI< LINEAR IC >
M52746SP
BUS CONTROLLED 3CH VIDEO PRE-AMP FOR CRT DISPLAY MONITOR
Note31) 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 bottom 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:
FC1=20 LOG
Note32) Relative characteristics
VOUT Vp-p
output amplitude when inputed SG3(1MHz) : 4.0Vp-p
(dB)
FC1 is calculated by the difference in the output between the channels.
Note33) Measuring condition and procedure are the same as described in Note31,expect SG3 to 200MHz.
Note34) Relative characteristics
FC1' is calculated by the difference in the output between the channels.
Note35) SG3 to 1MHz is as input signal. Control the main contrast in order that the amplitude of sine wave
output is 1.0Vp-p.
By the same way, measure the output amplitude when SG3 to200MHz is as input signal.
The measured value is called VOUT(24,28,31).
Frequency characteristics FC2(24,28,31) is calculated by the equation below:
FC2=20 LOG
Note36) Relative characteristics
VOUT Vp-p
output amplitude when inputed SG3(1MHz) : 4.0Vp-p
(dB)
FC2 is calculated by the difference in the output between the channels.
Note37) Input SG3 (50MHz) to pin2 only, and then measure the waveform amplitude output at
OUT(24,28,31).The measured value is called VOUT(24,28,31).
Crosstalk CT1 is calculated by the equation below:
CT1=20 LOG
VOUT(24,28)
VOUT(31)
(dB)
Note38) Measuring condition and procedure are the same as described in Note37,expect SG3 to 200MHz.
Note39) 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 CT2 is calculated by the equation below:
CT2=20 LOG
VOUT(24,31)
VOUT(28)
(dB)
Note40) Measuring condition and procedure are the same as described in Note39,expect SG3 to 200MHz.
Note41) 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 CT2 is calculated by the equation below:
VOUT(28,31)
CT3=20 LOG
VOUT(24)
(dB)
Note42) Measuring condition and procedure are the same as described in Note41,expect SG3 to 200MHz.
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MITSUBISHI< LINEAR IC >
M52746SP
BUS CONTROLLED 3CH VIDEO PRE-AMP FOR CRT DISPLAY MONITOR
Note43) Control the main contrast (00H) in order that the amplitude of output signal is 4.0Vp-p.
Control the brightness (V1) 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 =
2
(Tr2) - (Tr1)
2
(nsec)
Note44) 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 :
2
Tf =
(Tf2) - (Tf1)
2
(nsec)
100%
90%
10%
0%
Tr1
or
Tr2
Tf1
or
Tf2
Note45) Turn down the SG5 input level gradually from 5.0Vp-p, monitoring the waveform output.
Measure the top level of input pulse when the output pedestal voltage turn decrease with
unstable.
Note46) Decrease the SG5 pulse width gradually from 0.5us, monitoring the output. Measure the
SG5 pulse width (a point of 1.5V) when the output pedestal voltage turn decrease with
unstable.
Note47) 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:
PDCH=PDC1-PDC2
Note48) 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:
PDCL=PDC1-PDC3
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MITSUBISHI< LINEAR IC >
M52746SP
BUS CONTROLLED 3CH VIDEO PRE-AMP FOR CRT DISPLAY MONITOR
Note49) Measure the time needed for the output pulse to rise from 10% to 90%(OTR) with an active prove.
Note50) Measure the time needed for the output pulse to fall from 90% to 10% (OTF) with an active prove.
Note51) Measure the amplitude output at OUT(24,28,31). The measured value is called VOUT(24,28,31),
and is treated as Oaj1.
Note52) Relative characteristics Oaj1 is calculated by the equation below:
Oaj1=VOUT(24)/VOUT(28), VOUT(28)/VOUT(31), VOUT(31)/VOUT(24)
Note53) Measuring condition and procedure are the same as described in Note51.
Note54) Measuring condition and procedure are the same as described in Note52.
Note55) Measuring condition and procedure are the same as described in Note51.
Note56) Measuring condition and procedure are the same as described in Note52.
Note57) Reduce the SG6 input level gradually, monitoring output.
Measure the SG6 level when the output reaches 65~75% of first voltage. The measured value is
called VthOSD1.
Note58) Reduce the SG6 input level gradually, monitoring output.
Measure the SG6 level when the output reaches 0V. The measured value is called VthOSD2.
Note59) 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.
Note60) Measure the amplitude output at OUT(24,28,31). The measured value is called VOUT(24,28,31),
and is treated as Ohaj1.
Note61) Measure the amplitude output at OUT(24,28,31). The measured value is called VOUT(24,28,31),
and is treated as Ohaj2.
Note62) 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.
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MITSUBISHI< LINEAR IC >
M52746SP
BUS CONTROLLED 3CH VIDEO PRE-AMP FOR CRT DISPLAY MONITOR
Note63) The sync's amplitude of SG4 be changed all white into all black, increase from 0Vp-p to 0.03Vp-p.
No pulse output permitted.
Note64) 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.
Note65) Measure the high voltage at SyncOUT. The measured value is treated as VSH.
Note66) Measure the low voltage at SyncOUT. The measured value is treated as VSL.
Note67) SyncOUT becomes High with sink part of SG4.
Measure the time needed for the rear edge of SG4 sink 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.
Note68) Measure the time needed for the rear edge of SG4 sink 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
sync (50%)
SyncOUT
TDS-F
(50%)
TDS-R
Note69) No input at the Vcc of 12V when same condition by Note2 . Measure the AC current at Vcc(5V).
The measured value is treated as Iccps.
Note70) The Vcc of 12V be changed all white into all black, increase from 12V to 0V.
Measure the DC voltage at the Vcc When no output signal at R, G and Bout.
The measured value is treated as skv.
MITSUBISHI
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MITSUBISHI< LINEAR IC >
M52746SP
BUS CONTROLLED 3CH VIDEO PRE-AMP FOR CRT DISPLAY MONITOR
SG No.
INPUT SIGNAL
Pulse with amplirude of
0.7Vp-p (f=30KHz).
Video width of 25us. (75 % )
33us
SG1
8us
Video signal
(all white)
0.7VPP
SG2
0.7VP-P
(Amplitude is partially variable.)
Video signal
(step wave)
SG3
Sine wave
Sine wave amplitude of 0.7Vp-p.
f=1MHz,50MHz,200MHz(variable)
(for freq. char.)
Video width of 25us. (75 % )
SG4
all white or all black
variable.
0.7VP-P
Videosignal
0.3VPP
3us
(all white,all black)
Sync's amplitude
is variable.
Pulse width and
amplitude are variable.
0.5us
SG5
5VTTL
Clamp
pulse
SG6
5VTTL
OSD pulse
Amplitude is partially
variable.
5us
SG7
5VTTL
BLK pulse
Amplitude is partially variable.
5us
*)f=30KHz
MITSUBISHI
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MITSUBISHI< LINEAR IC >
M52746SP
BUS CONTROLLED 3CH VIDEO PRE-AMP FOR CRT DISPLAY MONITOR
TEST CIRCUIT
+
+
+
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MITSUBISHI< LINEAR IC >
M52746SP
BUS CONTROLLED 3CH VIDEO PRE-AMP FOR CRT DISPLAY MONITOR
Terminal Description
No.
Name
DC
Voltage
(V)
peripheral Circuit
Remark
It is recommended that the
IC be used between pedestal
35K
voltage 2V and 3V.
1
Main Brightness
1
Input pulses
2
4.0~5V(light)
2.5~3V(half)
OSD IN (R)
1K
1.5V~GND
3
OSD IN (B)
Connected to GND if
not used.
4
OSD IN (G)
2.0V
3.5V
0.5mA
Input pulses
R
3.7~5V
G
5
OSD BLK IN
5
1.7V~GND
B
Connected to GND if
0.4mA
not used.
2.7V
Clamped to about 2.5 V
2K
due to clamp pulses
2K
from pin 19.
6
INPUT (R)
Input at low impedance.
9
INPUT (B)
11
INPUT (G)
2.5
2.5V
CP
0.3mA
7
12
VCC
Vcc
12
MITSUBISHI
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MITSUBISHI< LINEAR IC >
M52746SP
BUS CONTROLLED 3CH VIDEO PRE-AMP FOR CRT DISPLAY MONITOR
No.
Name
8
NC
10
15
19
26
GND
13
INPUT (S on G)
DC
Voltage
(V)
peripheral Circuit
Remark
GND
When
open
~
~ 2.5V
500
1K
3.2V
SYNC ON VIDEO input pin.
Sync is negative.
input signal at Pin7, compare
with the reference voltage
of internal circuit in order to
separate sync signal from
Sync on Green signal.
7
Sync signal output pin,
Being of open collector output
type.
18
14
S on G Sep OUT
Input pulses
41K
2.5~5V
16
Clamp Pulse IN
0.5V
maximum
19
Input at low impedance.
2.2V
0.15mA
17
VCC (5V)
MITSUBISHI
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MITSUBISHI< LINEAR IC >
M52746SP
BUS CONTROLLED 3CH VIDEO PRE-AMP FOR CRT DISPLAY MONITOR
No.
Name
DC
Voltage
(V)
peripheral Circuit
Remark
ABL(Automatic Beam Limitter)
input pin.
Recommended voltage range
is 0 to 5V.
When ABL function is not used,
set to 5V.
2.5V
20K
18
ABL IN
When
open
2.5V
1.2K
1.2K
30K
0.5mA
15
2
SCL of I C BUS
(Serial clock line)
50K
20
SCL
VTH=2.3V
20
2K
3V
2
SDA of I C BUS
(Serial data line)
50K
VTH=2.3V
21
SDA
21
2K
3V
Input pulses
50K
R
2.5~5V
G
0.5V
maximum
B
22
Retrace BLK IN
22
Connected to GND if not
used.
2.25V
MITSUBISHI
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MITSUBISHI< LINEAR IC >
M52746SP
BUS CONTROLLED 3CH VIDEO PRE-AMP FOR CRT DISPLAY MONITOR
No.
Name
23
GND (B)
27
GND (G)
30
GND (R)
DC
Voltage
(V)
peripheral Circuit
GND of Rch, Gch and Bch
0
A resistor is needed on the GND
50
24
OUTPUT (B)
28
OUTPUT (G)
31
OUTPUT (R)
Remark
side.
Set discretionally to maximum
Variable
50
driving capacity.
Used to supply power to
25
output emitter follower only.
12
29
32
15 mA, depending on the required
VCC 2
Impre
ssed
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MITSUBISHI< LINEAR IC >
M52746SP
BUS CONTROLLED 3CH VIDEO PRE-AMP FOR CRT DISPLAY MONITOR
Electrical Chracteristics
Main Contrast Control Characteristics
Sub Contrast Control Characteristics
6
6
4
4
2
2
Sub Contrast : MAX
000H
Main Contrast : MAX
000H
FFH
Main Contrast Control Data
OSD Adjust Control Characteristics
Sub Contrast Control Data
ABL Characteristics
FFH
6
4
2
Main Contrast : MAX
Sub Contrast : MAX
0 0H
6
OSD Adjust Control Data
Brightness Control Characteristics
0
FH
12
ABL Control Voltage(VDC)
5
Sync separate input min sync width
(Video Duty=75 % )
8
4
Sync separate
normal operating range
4
7 100K
2
1u
00
Brightness Control Voltage(VDC)
5
IN
0
MITSUBISHI
input amplitude(Vp-p)
23
0.5
25
MITSUBISHI< LINEAR IC >
M52746SP
BUS CONTROLLED 3CH VIDEO PRE-AMP FOR CRT DISPLAY MONITOR
Application Method for M52746SP
CLAMP PULSE INPUT
Clamp pulse width is recommended
above 15 KHz, 1.0 usec
above 30 KHz, 0.5 usec
above 64 KHz, 0.3 usec .
19
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.
~
Notice of application
Make the nearest distance between output pin and pull down resister.
Recommended pedestal voltage of IC output signal is 2V.
MITSUBISHI
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MITSUBISHI< LINEAR IC >
M52746SP
BUS CONTROLLED 3CH VIDEO PRE-AMP FOR CRT DISPLAY MONITOR
APPLICATION
110V EXAMPLE
CRT
Cut Off Adjj
DAC IC
5VTTL
BLK IN
(for retrace)
SDA
4.7u
0.01u
4.7u
4.7u
0.01u
1K
0.01u
1K
SCL
1K
0 ~ 5V
32
31
30
29
28
27
26
25
24
23
22
21
20
12
13
ABL IN
19
18
17
14
15
16
M52746SP
1
2
3
4
5
6
7
8
10
9
11
0.01u
NC
0.01uu
100K
1K
1u
3.3u
3.3u
0.01u
Sync Sep
OUT
47u
47u
0~5V
3.3u
0.01u
0.01u
75
75
ClampPulse
IN
75
5VTTL
BLK IN
(for OSD)
OSD IN (G)
5VTTL
2.5VTTL
5VTTL
2.5VTTL
5VTTL
OSD IN (B)
2.5VTTL
OSD IN (R)
12V
0.01u
47u
5V
INPUT
(R)
INPUT
(B)
INPUT
(G)
SONG
INPUT
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