BUS CONTROLLED 3CH VIDEO PRE-AMP FOR CRT DISPLAY MONITOR
DISCRIPTION
M52749FP is Semiconductor Integrated Circuit
for CRT Display Monitor.
It includes OSD Blanking,OSD Mixing,Retrace
Blanking,Wide Band Amplifier,Brightness Control.
Main/Sub Contrast and OSD AdjustFunction .
BUS CONTROLLED 3CH VIDEO PRE-AMP FOR CRT DISPLAY MONITOR
Note22
Note23
Note24
-
-
Vp-p
Note25
V
Note26
V
Note27
V
Note28
V
Note29
V
Note30
V
Note31
dB
Note32
MAX
MIN TYP
0AH
D/A
OUT5
09H
D/A
OUT4
08H
D/A
OUT3
07H
D/A
OUT2
D/A
OUT1
04H06H
OSD
BUS CTL (H )
Sub
cont
03H
Sub
cont
02H
Sub
cont
01H
00H
Main
17
CTL voltage
FFH
FFH
FFH
FFH
FFH
Adj
00H
3
14H
2
14H
1
14H
cont
FFH
Bright
0.71.21.5Vp-p
255
255
255
255
255
0
20
20
20
255
5.0
2.0
1.2
0.81.0
-
-
-
-
-
-
C8H
C8H
C8H
C8H
4.03.44.6
200
200
200
200
5.0OUT
2.0
1.2
0.81.0
-
-
-
-
-
-
FFH
FFH
FFH
FFH
4.65.46.2Vp-p
255
255
255
255
2.04.0
1.2
0.81.0
-
-
2.32.83.3
2.0
2.0
1.2
0.81.0
-
-
3.64.04.4
5.0OUT
4.0
-0.300.3
-
-
1.82.12.4
5.0OUT
2.0
-0.300.3
-
-
0.91.11.3
5.0OUT
1.0
-0.300.3
-
-
2.5
0
-2.0
Vari
able
5.0OUT
Variable
-1.001.0dB
-
-
-
7
SOG
3034
ReT
21
13
InputStandard
9
OSD
1114
2 6
Test
Point(s)
Symbol
parameter
No
In
a
a
BLK
b
CP In
a
a
BLKABL
b
RGB InOSD In
OUT
VSC3
control
Sub contrast
17
SG5
-------
SG1
VSC3
Sub contrast
control relative
characteristics 3
18
a
a
b
SG5
a
a
b
SG1
VMSC
control
characteristics
characteristics 3
Main/sub contrast
19
a
a
b
-------
a
a
b
OUT
ABL1
VMSC
ABL control
characteristics
control relative
Main/sub contrast
20
21
SG5
-------
SG1
ABL1
characteristics 1
characteristics 1
ABL control relative
22
a
a
b
SG5
a
a
b
SG1
OUT
ABL2
ABL control
characteristics 2
23
a
a
b
SG5
-------
a
a
a
VB1
ABL2
characteristics2
characteristics 1
Brightness control
ABL control relative
24
25
a
a
b
SG5
-------
a
a
a
VB2
VB1
relative
characteristics 1
Brightness control
26
Brightness control
27
-------
VB2
relative
characteristics 2
characteristics 2
Brightness control
28
a
a
b
SG5
-------
aa
a
VB3
VB3
relative
characteristics 3
Brightness control
Brightness control
29
30
a
a
a
5V
aa
b
SG3
FC1
Frequency
(f=50MHz)
characteristics 3
characteristics 1
31
--
-
--
--
FC1
(f=50MHz)
characteristics 1
Frequency relative
32
MITSUBISHI
257
Page 8
Re-
mark
Note33
Note34
Note35
Note36
Note37
MITSUBISHI< LINEAR IC >
M52749FP
BUS CONTROLLED 3CH VIDEO PRE-AMP FOR CRT DISPLAY MONITOR
Note38
Note39
Note40
Note41
Note42
Note43
Note44
Note45
Note46
Unit
MAX
Standard
MIN TYP
0AH
D/A
OUT5
09H
D/A
OUT4
08H
D/A
OUT3
07H
D/A
OUT2
D/A
OUT1
04H06H
OSD
BUS CTL (H )
Sub
cont
3
03H
Sub
cont
2
02H
Sub
cont
1
01H
00H
Main
17
CTL voltage
FFH
FFH
FFH
FFH
FFH
00H
Adj
FFH
FFH
FFH
Vari
cont
Bright
dB
-3.003.0
255
255
255
255
255
0
255
255
255
able
5.0
Variable
dB
-1.001.0dB-3.03.05.0dB-1.001.0
-
5.0
-
Variable
--
dB
-25-20
-
255
FFH
5.0
Variable
dB
-20-15
-
5.0
Variable
dB
-25-20
-
5.0
Variable
dB
-20-15
-
5.0
Variable
dB
-25-20dB-20-15
-
-
5.0
5.0
Variable
Variable
nS
2.8
2.0
-
Vari
able
5.0
Variable
nS
2.8
2.0
-
Vari
able
5.0
Variable
1.01.52.0
FFH
V
255
5.0
2.0
uS
-
-
0.2
5.0
2.0
7
3034
21
13
Input
9
1114
2 6
Test
Symbol
parameter
No
In
SOG
ReT
BLK
a
CP In
BLKABL
OSD
b
RGB InOSD In
Point(s)
Frequency
-
a
-
a
-
5V
--
aa
-
SG3
-
OUT
FC1'
FC1'
(f=180MHz)
characteristics 1
characteristics 1
Frequency relative
33
34
a
a
a
aa
b
OUT
FC2
Frequency
(f=180MHz)
characteristics 2
35
5V
SG3
(f=180MHz)
characteristics 2
Frequency relative
-
-
-
--
-
-
FC2
(f=180MHz)
36
a
a
a
a
a
5Va5Va5Va5Va5Va5V
a
a
aa
2 b SG3
6 a
11a
OUT(33)
OUT(38)
CT1
(f=50MHz)
Crosstalk 1
37
2 b SG3
6 a
11a
OUT(33)
OUT(38)
CT1'
Crosstalk 1
(f=180MHz)
38
2 a
6 b SG3
OUT(33)
Crosstalk 2
a
a
aa
11a
OUT(41)
CT2
(f=50MHz)
39
a
a
a
a
2 a
6 b SG3
11a
OUT(33)
OUT(41)
CT2'
Crosstalk 2
(f=180MHz)
40
a
a
aa
2 a
6 a
11b SG3
OUT(38)
OUT(41)
CT3
(f=50MHz)
Crosstalk 3
41
a
a
a
a
2 a
6 a
11b SG3
OUT(38)
OUT(41)
CT3'
Crosstalk 3
(f=180MHz)
42
a
a
b
SG5bSG5
aa
b
SG1
OUT
Tr
Pulse
(3Vp-p)
characteristics 1
43
a
a
a
a
b
SG1
OUT
Tf
Pulse
(3Vp-p)
characteristics 2
44
a
a
b
SG5
Variable
aa
b
SG1bSG1
OUT
VthCP
Clamp pulse
threshold voltage
45
a
a
b
SG5
Variable
a
a
OUT
WCP
Clamp pulse
minimum width
46
MITSUBISHI
258
Page 9
Re-
Unit
mark
Note47
ns
Note48
ns
Note49
Vp-p
Note50
-
Note51
MITSUBISHI< LINEAR IC >
M52749FP
BUS CONTROLLED 3CH VIDEO PRE-AMP FOR CRT DISPLAY MONITOR
Note53
Note52
Vp-p
Note54
-
Note55
Note56
V
Note57
V
Note60
V
Note61
Vp-p
Note62
Vp-p-
MAX
MIN TYP
0AH
D/A
OUT5
09H
D/A
OUT4
08H
D/A
OUT3
07H
D/A
OUT2
D/A
OUT1
04H06H
OSD
03H
02H
01H
00H
17
Sub
Sub
Sub
Main
cont
cont
cont
Adj
cont
Bright
BUS CTL (H )
CTL voltage
0.03
--
2.05.0
-
0.2
2.05.0
3.5
3.06.0
3.06.0
-
-
255
FFH
255
FFH
255
FFH
255
FFH
255
FFH
8
08H
08H
3
255
FFH
2
255
FFH
1
255
FFH
255
FFH
2.05.0
8
2.05.0
0FH
2.84.2
15
2.05.0OUT
0.81.01.2
-
-
-
2.8Vp-p
2.253.35
08H
2.05.0
1.5
0.81.01.2
1.21.8
0
-
8
00H
-
-
2.05.0OUT
0.81.01.2
-
-
-
2.22.73.2V2.22.73.2
8
08H
2.05.0
00H
0
2.05.0
0.3
-0.6
2.05.0OUT
1.01.52.0
2.05.0
7
SOG
3034
ReT
21
13
InputStandard
9
OSD
1114
2 6
Test
Point(s)
Symbol
parameter
No
In
aa
BLK
b
SG5bSG5bSG5
b
SG6bSG6bSG6
a
BLKABL
a
RGB InOSD In CP In
OUT
OTr
OSD pulse
characteristics 1
47
aa
b
a
a
OUT
OTf
OSD pulse
characteristics 2
48
-
a
-
a
-
--
SG6
-
a
-
Oaj1
Oaj1
relative
characteristics 1
OSD adjust control
49
characteristics 1
OSD adjust control
50
-
-
aa
b
b
b
OSD adjust control
-
SG5
-
SG6
-
SG6
-
a
-
OUT
Oaj2
Oaj2
relative
characteristics 2
OSD adjust control
51
52
a
a
b
SG5
b
SG6
b
SG6
a
Oaj3
characteristics 2
characteristics 3
OSD adjust control
53
-
a
-
a
-
b
SG5
-
b
SG6
-
b
SG6
-
a
OUT
Oaj3
VthOSD
relative
OSD input
characteristics 3
OSD adjust control
54
55
aa
b
SG5
a
Variable
b
SG6
Variable
b
SG1
OUT
VthBLK
OSD BLK input
threshold voltage
threshold voltage
56
a
b
SG7
b
SG5
aa
a
HBLK1
Retrace BLK
characteristics 1
57
a
b
b
SG7
Variable
b
SG5
a
a
a
OUT
SS -NVSS -
VthRET
SOG input
threshold voltag
Retrace BLK input
60
b
SG4
SG4
Variable
a
a
a
a
a
a
aa
a
a
SonG IN
SonG IN
SyncOUT
voltage
SOG minimum
maximum noise
61
62
Variable
SyncOUT
SV
input voltage
MITSUBISHI
259
Page 10
Re-
Unit
mark
MAX
Note63
Note64
Note65
Note66
Note67
VDC
MITSUBISHI< LINEAR IC >
M52749FP
BUS CONTROLLED 3CH VIDEO PRE-AMP FOR CRT DISPLAY MONITOR
Note68
VDC
Note69
mA
-
-
Note69a
mA
1.0
-
Note70
LSB
-
Standard
MIN TYP
D/A
OUT5
0AH
09H
D/A
OUT4
08H
D/A
OUT3
07H
D/A
OUT2
D/A
OUT1
04H06H
OSD
BUS CTL (H )
Sub
cont
03H
Sub
cont
02H
Sub
cont
01H
00H
Main
17
CTL voltage
7
SOG
3034
ReT
Adj
3
2
1
cont
Bright
In
BLK
b
4.54.95.0V
2.05.0
SG4
a
4.55.05.5
255
255
255
255
255
0
255
255
255
255
2.05.0
a
a
00H
00H
00H
00H
00H
00.51.0
0
0
0
0
0
2.05.0
a
a
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00.30.6V
2.05.0
b
b
SG4
a
06090ns
06090ns
2.05.0
2.05.0
SG4bSG4
a
a
FFH
FFH
FFH
FFH
FFH
00H
FFH
FFH
FFH
FFH
0.18
0
0
0
0
0
0
0
0
0
0
2.05.0
a
a
-
2.05.0
-1.01.0
Vari
Vari
Vari
Vari
Vari
00H
FFH
FFH
FFH
FFH
able
able
able
able
able
0
255
255
255
255
2.05.0
a
a
21
13
Input
9
1114
2 6
Test
Symbol
parameter
No
CP In
OSD
BLKABL
RGB InOSD In
Point(s)
a
a
a
a
a
a
a
a
OUT
Sync
Sync
VSH
Level
Sync Output Hi
Sync Output Lo
63
64
OUT
VSL
Level
a
a
a
a
a
a
a
a
OUT
Sync
Time1
Sync Output Delay
OUT
TDS-R
Time2
66
Sync
TDS-F
Sync Output Delay
65
a
a
a
a
a
D/AOUT
VOH
voltage
D/A H output
67
D/A L output
a
a
a
D/AOUT
VOL
voltage
68
a
a
a
a
D/AOUT
IA-
D/AOUT
input current
69
MITSUBISHI
aaaaaa
D/AOUT
IA+
D/AOUT
output current
69a
a
a
a
a
D/AOUT
DNL
D/A nonlinearity
70
2510
Page 11
MITSUBISHI< LINEAR IC >
M52749FP
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 V34 gradually, and measure the voltage when the bottom of waveform output is
distorted. The voltage is called VOL.
Next, increase V34 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(33,38,41). The amplitude is called
VOUT(33,38,41).Maximum gain GV is calculated by the equation below:
VOUT
GV=20 LOG(dB)
Note6) Relative maximum gain GV is calculated by the equation below:
GV=VOUT(33)/VOUT(38), VOUT(38)/VOUT(41), VOUT(41)/VOUT(33)
Note7) Measuring the amplitude output at OUT(33,38,41). The measured value is called VOUT(33,38,41).
Main contrast conrol characteristics VC1 is calculated by the equation below:
VC1=20 LOG(dB)
Note8) Relative characteristics VC1 is calculated by the equation below:
VC1=VOUT(33)/VOUT(38) , VOUT(38)/VOUT(41) , VOUT(41)/VOUT(33)
Note9) Measuring condition and procedure are the same as described in Note7.
Note10) Measuring condition and procedure are the same as described in Note8.
0.7
VOUT
0.7
Note11) Measuring the amplitude output at OUT(33,38,41). The measured value is called VOUT(33,38,41).
Note12) Measuring condition and procedure are the same as described in Note8.
MITSUBISHI
2511
Page 12
MITSUBISHI< LINEAR IC >
M52749FP
BUS CONTROLLED 3CH VIDEO PRE-AMP FOR CRT DISPLAY MONITOR
Note13) Measure the amplitude output at OUT(33,38,41). The measured value is called VOUT(33,38,41).
Sub contrast conrol characteristics VSC1 is calculated by the equation below:
VOUT
VSC1=20 LOG(dB)
Note14) Relative characteristics VSC1 is calculated by the equation below:
VSC1=VOUT(33)/VOUT(38) , VOUT(38)/VOUT(41) , VOUT(41)/VOUT(33)
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) Measure the amplitude output at OUT(33,38,41). The measured value is called VOUT(33,38,41).
Note18) Measuring condition and procedure are the same as described in Note14.
Note19) Measure the amplitude output at OUT(33,38,41). The measured value is called VMSC.
Note20) Relative characteristics VMSC is calculated by the equation below:
Note21) Measure the amplitude output at OUT(33,38,41). The measured value is called VOUT(33,38,41),
and is treated as ABL1.
Note22) Relative characteristics ABL1 is calculated by the equation below:
ABL1=VOUT(33)/VOUT(38) , VOUT(38)/VOUT(41) , VOUT(41)/VOUT(33)
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(33,38,41) with a voltmeter. The measured value is called
VOUT(33,38,41), and is treated as VB1.
Note26) Relative characteristics VB1 is calculated by the difference in the output between the channels.
VB1=VOUT(33)Å|VOUT(38) , VOUT(38)Å|VOUT(41) , VOUT(41)Å|VOUT(33)
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.
MITSUBISHI
2512
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MITSUBISHI< LINEAR IC >
M52749FP
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 2KOhm 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 4.0Vp-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(33,38,41).
Frequency characteristics FC1(33,38,41) is calculated by the equation below:
VOUT Vp-p
FC1=20 LOG(dB)
output amplitude when inputted SG3(1MHz) : 4.0Vp-p
Note32) Relative characteristics FC1 is calculated by the difference in the output between the channels.
Note33) Measuring condition and procedure are the same as described in Note31,except SG3 to 180MHz.
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 to 150MHz is as input signal.
The measured value is called VOUT(33,38,41).
Frequency characteristics FC2(33,38,41) is calculated by the equation below:
VOUT Vp-p
FC2=20 LOG(dB)
output amplitude when inputted SG3(1MHz) : 4.0Vp-p
Note36) Relative characteristics 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(33,38,41).The measured value is called VOUT(33,38,41).
Crosstalk CT1 is calculated by the equation below:
CT1=20 LOG(dB)
Note38) Measuring condition and procedure are the same as described in Note37,except SG3 to 180MHz.
Note39) Input SG3 (50MHz) to pin6 only, and then measure the waveform amplitude output at
OUT(33,38,41).The measured value is called VOUT(33,38,41).
Crosstalk CT2 is calculated by the equation below:
CT2=20 LOG
Note40) Measuring condition and procedure are the same as described in Note39,except SG3 to 180MHz.
Note41) Input SG3 (50MHz) to pin11 only, and then measure the waveform amplitude output at
OUT(33,38,41).The measured value is called VOUT(33,38,41).
Crosstalk CT2 is calculated by the equation below:
CT3=20 LOG
Note42) Measuring condition and procedure are the same as described in Note41,except SG3 to 180MHz.
VOUT(33,38)
VOUT(41)
VOUT(33,41)
(dB)
VOUT(38)
VOUT(38,41)
(dB)
VOUT(33)
MITSUBISHI
2513
Page 14
MITSUBISHI< LINEAR IC >
M52749FP
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 3.0Vp-p.
Control the brightness (V34) 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 probe.
Pulse characteristics Tr is calculated by the equations below :
Tr= (Tr2)-(Tr1) (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 probe.
Pulse characteristics Tf is calculated by the equations below :
Tr= (Tf2)-(Tf1) (nsec)
100%
0%
Note45) Turn down the SG5 input level gradually from 5.0Vp-p, monitoring the waveform output.
Measure thetop level of input pulse when the output pedestal voltage turn decrease with unstable.
22
22
Tr1
or
Tr2
90%
10%
Tf1
or
Tf2
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 turndecrease with unstable.
MITSUBISHI
2514
Page 15
MITSUBISHI< LINEAR IC >
Measure the SG6 level when the output reaches 0V. The measured value is called VthOSD.
Note56) 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.
Note57) Measure the amplitude output is blanked by the SG7 at OUT(33,38,41). The measured value is
called VOUT(33,38,41), and is treated as HBLK1.
Note60) 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.
M52749FP
BUS CONTROLLED 3CH VIDEO PRE-AMP FOR CRT DISPLAY MONITOR
Note47) Measure the time needed for the output pulse to rise from 10% to 90% (OTr) with an active probe.
Note48) Measure the time needed for the output pulse to fall from 90% to 10% (OTf) with an active probe.
Note49) Measure the amplitude output at OUT(33,38,41). The measured value is called VOUT(33,38,41),
and is treated as Oaj1.
Note50) Relative characteristics Oaj1 is calculated by the equation below:
Oaj1=VOUT(33)/VOUT(38)ÅAVOUT(38)/VOUT(41)ÅAVOUT(41)/VOUT(33)
Note51) Measuring condition and procedure are the same as described in Note49.
Note52) Measuring condition and procedure are the same as described in Note50.
Note53) Measuring condition and procedure are the same as described in Note49.
Note54) Measuring condition and procedure are the same as described in Note50.
Note55) Reduce the SG6 input level gradually, monitoring output.
MITSUBISHI
2515
Page 16
MITSUBISHI< LINEAR IC >
M52749FP
BUS CONTROLLED 3CH VIDEO PRE-AMP FOR CRT DISPLAY MONITOR
Note61) 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.
Note62) 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.
Note63) Measure the high voltage at SyncOUT. The measured value is treated as VSH.
Note64) Measure the low voltage at SyncOUT. The measured value is treated as VSL.
Note65) 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.
Note66) 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
Note67) Measure the DC voltage at D/AOUT. The measured value is treated as VOH.
Note68) Measure the DC voltage at D/AOUT. The measured value is treated as VOL.
Note69) IA- is minimum input-current when input 1VDC to D/AOUT.
IA-
D/A OUT
Note69a) IA+ is maximum output-current from D/AOUT.
Note70) The difference of differential non- linearity of D/AOUT must be less than 1.0LSB.
A
1VDC
(50%)
TDS-RTDS-F
+
MITSUBISHI
2516
Page 17
BUS CONTROLLED 3CH VIDEO PRE-AMP FOR CRT DISPLAY MONITOR
SG No.INPUT SIGNAL
MITSUBISHI< LINEAR IC >
M52749FP
SG1
Video signal
(all white)
SG2
Video signal
(step wave)
SG3
Sine wave
(for freq. char.)
SG4
8us
33us
Pulse with amplirude of
0.7Vp-p (f=30KHz).
Video width of 25us. (75%)
0.7VPP
0.7VP-P
(Amplitude is variable.)
Sine wave amplitude of 0.7Vp-p.
f=1MHz,50MHz,180MHz(variable)
Video width of 25us. (75%)
0.7VPP
all white or all black
variable.
Videosignal
(all white,all black)
SG5
Clamp
pulse
SG6
OSD pulse
SG7
BLK pulse
5us
3us
0.5us
5us
5VTTL
Sync's amplitude
0.3VPP
is variable.
Pulse width and
amplitude are variable.
5VTTL
Amplitude is variable.
5VTTL
Amplitude is variable.
MITSUBISHI
f=30KHz
17
25
Page 18
TEST CIRCUIT
SCL
SDA
22
23
gnddacdacdacdac
MITSUBISHI< LINEAR IC >
M52749FP
BUS CONTROLLED 3CH VIDEO PRE-AMP FOR CRT DISPLAY MONITOR
c/p
sync
5V
21
20
19
C/P IN
47u
SW
SYNC
OUT
21
1K
a
SG5
b
IB
5V
A
SG7
D/A
D/A
D/A
D/A
D/A
V34
OUT5
OUT4
OUT3
OUT2
OUT1
0~5V
252436
26
27
dac
NCgnd
abl
NC
V17
0~5V
: MEASURE POINT
Capacitor:0.01uF(unless otherwise specified.)
29
b
30
SW
a
1K
1K
2.2u
30
3128
32
33
3534
37
3839
blksclsda
C/CC/R
gndgnd
brt
NC
Bosd
osdSonGgnd12V
12VG
gnd12V
100K
IN(11)
SONG
IN
IN(6)
0.01u
+
3.3u
0.01u3.3u
+
1u
SW13
SW11
SW9
SW7
SW6
SW4
a
b
a
b
a
b
a
b
a
b
a
b
SG4
OUT(41)OUT(38)OUT(33)
100
1K
100uH
4140
42
NC
Rosdgnd
12Voutgndoutout
blk
MITSUBISHI
123456789101112131415171816
IN(2)
0.01u
+
3.3u
SW1SW2
SG1
SG2
b
a
b
a
IA
A
47u
+
18
SG3
SG6
12V
25
Page 19
Terminal Description
MITSUBISHI< LINEAR IC >
M52749FP
BUS CONTROLLED 3CH VIDEO PRE-AMP FOR CRT DISPLAY MONITOR
No.
1
2
6
11
Name
OSD BLK IN
INPUT (R)
INPUT (G)
INPUT (B)
DC
Voltage
(V)
2.5
peripheral Circuit
2K
1
2K2K
0.3mA
Remark
Input pulses
R
G
B
Connected to GND if
2.7V
0.46mA
2.5V
CP
not used.
Clamped to about 2.5 V
due to clamp pulses
from pin 21.
Input at low impedance.
3.7~5V
1.7V~GND
12
13
5
10
14
16
24
32
36
39
3
8
4
9
VCC 1(R)
VCC 1(G)
VCC 1(B)
OSD IN (R)
OSD IN (G)
OSD IN (B)
GND1(R)
GND1(G)
GND
GND1(B)
GND(5V)
GND
GND
GND 2
12
GND
1K
2K
0.5mA
Apply equivalent
voltage to 3 channels.
Input pulses
3.7~5V
1.7V~GND
Connected to GND if
not used.
2.7V
MITSUBISHI
2519
Page 20
MITSUBISHI< LINEAR IC >
M52749FP
BUS CONTROLLED 3CH VIDEO PRE-AMP FOR CRT DISPLAY MONITOR
No.
7
17
Name
INPUT (S on G)
ABL IN
DC
Voltage
(V)
When
open
2.5V
When
open
2.5V
peripheral Circuit
19
7
0.22mA0.15mA0.22mA
20K
1.2K1.2K30K
0.5mA
17
500
2.5V
Remark
SYNC ON VIDEO input pin .
Sync is negative .
input signal at Pin7, compare
with the reference voltage
of internal circuit in order to
3.33V
separate sync signal from
Sync on Green signal .
ABL(AutomaticBeamLimiter)
input pin.
Recommended voltage range
is 0 to 5V.
When ABL function is not used,
set to 5V.
15
18
37
40
19
NC
5VCC(5V)
Sync signal output pin,
20
Being of open collector output
type.
SonG Sep OUT20
MITSUBISHI
2520
Page 21
MITSUBISHI< LINEAR IC >
M52749FP
BUS CONTROLLED 3CH VIDEO PRE-AMP FOR CRT DISPLAY MONITOR
No.
21
22
Nameperipheral Circuit
Voltage
(V)
DC
Clamp Pulse IN
SCL
21
50K
22
2K
41K
2.2V
0.15mA
19
3V
Remark
Input pulses
2.5~5V
0.5V~GND
Input at low impedance.
2
SCL of I CBUS
(Serialclockline)
VTH=2.3V
23
25
26
27
28
29
SDA
D/]A OUT
19
50K
23
2K
3V
SDA of I CBUS
(Serialdataline)
VTH=2.3V
2
D/A output pin.
Output voltage range is 0~5V.
Min input current is 0.18mA
when D/A output pin is 1V.
Max output current is 1.0mA.
MITSUBISHI
2521
Page 22
MITSUBISHI< LINEAR IC >
M52749FP
BUS CONTROLLED 3CH VIDEO PRE-AMP FOR CRT DISPLAY MONITOR
No.
30Retrace BLK IN
31
35
Nameperipheral Circuit
Main Contrast Cont
Main Contrast Ref
DC
Voltage
(V)
3.5~5.5
4.5
30K
15K
30
15K
15K
50K
31
80K
2.25V
Remark
Input pulses
R
G
B
Connected to GND
if not used.
Non-polar capacitance is
1919
10K
35
required between pin31 and
pin35.
2.5~5V
0.5V~GND
33OUTPUT (B)
38
41
42
34
OUTPUT (G)
OUTPUT (R)
VCC 212
Main Brightness
Variable
A resistor is needed on
42
50
50
35K
34
the GND side.
Set discretionally to maximum
15 mA, depending on the
required driving capacity.
Used to supply power to
output emitter follower
only.
It is recommended that the
IC be used between pedestal
voltage 2V and 3V.
MITSUBISHI
2522
Page 23
Electrical Chracteristics
MITSUBISHI< LINEAR IC >
M52749FP
BUS CONTROLLED 3CH VIDEO PRE-AMP FOR CRT DISPLAY MONITOR
Main Contrast Control Characteristics
6
4
2
Output Amplitude (Vp-p)
Sub Contrast : MAX
0
00H
Main Contrast Control Data
Brightness Control Characteristics
6
4
FFH
Sub Contrast Control Characteristics
6
4
2
Output Amplitude (Vp-p)
0
00H
Sub Contrast Control Data
Main Contrast : MAX
ABL Characteristics
6
4
FFH
2
Output DC Voltage (VDC)
0
0
Brightness Control Voltage (VDC)
OSD Adjust Control Characteristics
6
4
2
Output Amplitude (Vp-p)
0
0H
OSD Adjust Control Data
FH
2
Output Amplitude (Vp-p)
Main Contrast : MAX
Sub Contrast : MAX
0
5
12
0
ABL Control Voltage (VDC)
Sync separate input min sync width
5
(Video Duty=75%)
8
Sync separate
normal operating range
Duty of sync width (%)
4
7
1u
IN
input amplitude (Vp-p)
0.50
MITSUBISHI
23
25
Page 24
BUS CONTROLLED 3CH VIDEO PRE-AMP FOR CRT DISPLAY MONITOR
Application Method for M52749SP
CLAMP PULSE INPUT
Clamp pulse width is recommended
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.
21
MITSUBISHI
24
25
Page 25
APPLICATION EXAMPLE
110V
MITSUBISHI< LINEAR IC >
M52749FP
BUS CONTROLLED 3CH VIDEO PRE-AMP FOR CRT DISPLAY MONITOR
CRT
CutOffAdj
DAC OUT X5
0~5V
0.01u
100
100uH
424140393837363534333231302928272625242322
NCNC
2.2u
1K1K1K
0.01u
0.01u0.01u0.01u
M52749FP
123456789101112131415161718192021
100K
0.01u
+
47u
5VTTL
3.3u
0.01u
+
0.01u
+
47u
75
NC
5VTTL
NC
0.01u
5VTTL
3.3u
0.01u
75
0.01u
+
47u
5VTTL
3.3u
++
0.01u
75
+
1u
0.01u
BLK IN
(for retrace)
SDA SCL
1K
OSD IN (B)
OSD IN (G)
OSD IN (R)
BLK IN
(for OSD)
5VTTL
ClampPulse
IN
ABL IN
0~5V
SyncSep
OUT
12V
5V
INPUT
(R)
INPUT
(G)
+
SONG
INPUT
MITSUBISHI
INPUT
(B)
0.01u
25
+
47u
25
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