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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.
PIN CONFIGURATION
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) Main Contrast and Sub Contrast can be controlled by I2C Bus.
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 6 7 8 9 10 11 12 13 14 15 16
32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17
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
STRUCTURE
Bipola Silicon Monolisic IC
APPLICATION
CRT Display Monitor
32 pin plastic SDIP
RECOMMENDED OPERATING CONDITIONS
Supply Voltage Range Rated Supply Voltage 11.5V~12.5V(V7,V12,V25,V29,V32) 4.5V~4.4V(V17) 12.0V(V7,V12,V25,V29,V32) 5.0V(V17)
MAJOR SPECIFICATION
Bus Controlled 3ch Video Pre-Amp with OSD Mixing Function
MITSUBISHI
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MITSUBISHI< LINEAR IC >
M52746SP
BUS CONTROLLED 3CH VIDEO PRE-AMP FOR CRT DISPLAY MONITOR
Absolute Maximum Rating (Ambient temperature: 25 C)
Parameter Supply voltage 12 Supply voltage 5 Power dissipation Ambient temperature Storage temperature
Recommended supply 12 Recommended supply voltage range 12 voltage range 5 5
Symbol Vcc12 Vcc 5 Pd Topr Tstg Vopr 12 Vopr 5 Vopr' 12 Vopr' 5 jc
Rating 13.0 6.0 2358 -20~ +75 -40~ +150 12.0 5.0 10.5~12.5 ( Typ 12.0V ) 4.5~5.5 ( Typ 5.0V ) 28
Unit V V mW C C V V V V C/W
Case temperature
Thermal Derating Curve
2800
2400 2358
2000
1600 1415 1200
800
400
attached board
-20
0
25
50
75
100
125
150
Ambient temperature Ta( C)
MITSUBISHI
2
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MITSUBISHI< LINEAR IC >
M52746SP
BUS CONTROLLED 3CH VIDEO PRE-AMP FOR CRT DISPLAY MONITOR
Fig. 1 Block Diagram
MITSUBISHI
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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
sub
Data Byte(up:bit information down:preset) D6 A06 1 A16 0 A26 0 A36 0 0 D5 A05 0 A15 0 A25 0 A35 0 0 D4 A04 0 A14 0 A24 0 A34 0 0 D3 A03 0 A13 0 A23 0 A33 0 A43 1 D2 A02 0 A12 0 A22 0 A32 0 A42 0 D1 A01 0 A11 0 A21 0 A31 0 A41 0 D0 A00 0 A10 0 A20 0 A30 0 A40 0
add. D7 00H A07 0 01H 02H 03H 04H A17 1 A27 1 A37 1 0
MITSUBISHI
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MITSUBISHI< LINEAR IC >
M52746SP
BUS CONTROLLED 3CH VIDEO PRE-AMP FOR CRT DISPLAY MONITOR
2
I C BUS CONTROL SECTION SDA,SCL CHARACTERISTICS
parameter symbol MIN -0.5 3.0 0 4.7 4.0 MAX 1.5 5.5 100 unit V V KHz us us
min. input LOW voltage. max. input HIGH voltage. SCL clock frequency.
Time the bus must be free before a new transmission can start.
VIL VIH fSCL tBUF tHD:STA tLOW tHIGH tSU:STA tHD:DAT tSU:DAT tR tF tSU:STO
Hold time start condition.After this period the first clock pulse is generated. The LOW period of the clock. The HIGH period of the clock.
Srt up time for start condition. (Only relevant for a repeated start condition.)
4.7 4.0 4.7 0 250 4.0
1000 300 -
us us us us ns ns ns us
Hold time DATA. Set-up time DATA. Rise time of both SDA and SCL lines. Fall time of both SDA and SCL lines. Set-up time for stop condition.
tR, tF tBUF VIL
SDA
VIH
tHD:STA VIL
SCL
tSU:DAT
tHD:DAT
tSU:STA
tSU:ST
O
VIH tLOW
S
tHIGH
S
P
S
MITSUBISHI
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Supplementary Table1 Electrical Characteristics (Vcc= 12V,5V; Ta= 25 C unless otherwise specified) Input
CTL voltage
BUS CTL ( H )
Standard MIN TYP MAX
135 110 mA
Note1 00H 01H 02H 03H 04H
No
Unit
Bright ABL 4.0
FFH FFH FFH FFH 00H
Sub Sub Sub Main cont cont cont OSD cont R G B Adj
parameter
Symbol Test Point(s) 16
13 5 234 SOG OSD ReT RGB In BLK OSD In CP In BLK In
a 5.0 255 255 255 255 0 a b SG5 a a b SG5 a 4.0 Variable
7 9 11
22
1
18
Remark
1
Circuit current1
Icc1
IA
a
2 a 5.0 35 a a
Circuit current2
Icc2
IB
a
18
mA
Note2
3 a
64H
Output dynamic Vomax range
OUT
a 5.0 6.0 8.0
b SG5 a a b SG5 a 5.0 100
FFH
-
Vp-p
Note3
4
Maximum input
Vimax
IN OUT a 1.6 a a 2.0 a 5.0 255 C8H
b SG2 b SG2 -
-
Vp-p
Note4
Variable
5
Maximum gain
Gv
OUT
B SG1 a b SG5 a a 2.0 -
17.1
17.7
19.4
dB
Note5
6
Relative maximum gain
Gv
-
-
0.8
1.0
1.2
-
Note6
7
Main contrast control characteristics 1
VC1 2.0 5.0 200 64H
OUT
b AG1 a a b SG5 a a -
15.0
16.5
19.0
dB
Note7
8
Main contrast control relative characteristics 1
VC1
-
-
0.8
1.0
1.2
-
Note8
9 a a a a 2.0 5.0 100
Main contrast control characteristics 2
VC2
OUT
b SG1 b SG5 -
9.0
10.5
13.0
dB
Note9
10
Main contrast control relative characteristics 2
VC2
-
-
0.8
1.0
1.2
-
Note10
11 2.0
Main contrast control characteristics 3
VC3
OUT
b SG1 a a b SG5 a a 5.0 -
14H 20
0.1
0.5
0.8
Vp-p
Note11
12 a a a a
Main contrast control relative characteristics3
VC3
-
-
FFH C8H C8H C8H
0.8
1.0
1.2
-
Note12
13
Sub contrast control characteristics 1
VSC1
OUT
b SG1 b SG5 -
2.0
5.0 255 200 200 200 -
15.5
16.5
19.0
dB
Note13
14
Sub contrast control relative characteristics 1
VSC1
-
-
-
-
-
FFH 64H 64H 64H
0.8
1.0
1.2
-
Note14
15 a a
Sub contrast control characteristics 2
VSC2
OUT
b SG1 -
b SG5
a -
a -
2.0
5.0 255 100 100 100 -
9.0
12.0
13.0
dB
Note15
16
Sub contrast control relative characteristics 2
VSC2
-
-
-
-
-
-
0.8
1.0
1.2
-
Note16
Input
CTL voltage
BUS CTL ( H )
Standard MIN TYP MAX
0.1 0.5 0.8 Vp-p
Note17 00H 01H 02H 03H 04H
No
Unit
Bright ABL 2.0 5.0
FFH 14H 14H 14H 00H 255 20 20 20 0
Sub Sub Sub Main cont cont cont OSD cont R G B Adj
parameter
Symbol Test Point(s) 16
13 5 234 SOG OSD ReT RGB In BLK OSD In CP In BLK In
a a a a b SG5 0.8 1.0 1.2 a 2.0 3.6 4.6 5.0 a -
7 9 11
22
1
18
Remark
Sub contrast control 17 characteristics 3
VSC3
OUT
b SG1 a a -
18
Sub contrast control relative characteristics 3
VSC3
-
-
Note18
19
Main/sub contrast control characteristics
VMSC
OUT
b SG1 b SG5
C8H C8H C8H C8H 200 200 200 200
4.8
Vp-p
Note19
20 a a 2.0 4.0 a a b SG5 FFH FFH FFH FFH 255 255 255 255
Main/sub contrast control relative characteristics
VMSC 4.7
0.8 -
-
-
-
-
-
-
1.0 5.5
1.2 6.3
-
Note20
21 characteristics 1 ABL1 -
ABL control
OUT
b SG1
Vp-p
Note21
22
ABL control relative characteristics 1
ABL1
-
-
0.8
1.0
1.2
-
Note22
23 characteristics 2 ABL2 2.0 -
ABL control
OUT
b SG1 a a 2.0 a a b SG5
1.7
2.2
2.7
Vp-p
Note23
24
ABL control relative characteristics2
ABL2
-
-
0.8
1.0
1.2
-
Note24
25 a a a a
Brightness control characteristics 1
VB1
OUT
a 4.0 5.0
b SG5 a a 2.0 5.0 -
3.3
3.8
4.2
V
Note25
26 a a -
Brightness control relative characteristics 1
VB1
-
-
-0.3
0
0.3
-
Note26
27
Brightness control characteristics 2
VB2
OUT
a
b SG5 -
1.5
1.8
2.1
V
Note27
28 -
Brightness control relative characteristics 2
VB2
-
-
-0.3
0
0.3
-
Note28
29
VB3
OUT
a a a a a
b SG5 -
1.0
5.0
0.5
0.9
1.1
V
Note29
30
Brightness control characteristics 3 Brightness control relative characteristics 3
VB3
-
-
-
-
-
-
-0.3
0
0.3
-
Note30
Frequency
31 characteristics 1 a a
(f=50MHz)
FC1
OUT
b SG3 -
a 5V
a -
a -
Variable
5.0
Vari able
-2.0
0
2.5
dB
Note31
32
Frequency relative characteristics 1 (f=50MHz)
FC1
-
-
-
-
-
-1.0
0
1.0
dB
Note32
Input
CTL voltage
BUS CTL ( H )
Standard MIN TYP MAX
-3.0 0 3.0 dB
Note33 00H 01H 02H 03H 04H
No
Unit
Bright ABL
Variable Sub Sub Sub Main cont cont cont OSD cont R G B Adj Varia FFH FFH FFH 00H ble 255 255 255 0
parameter
Symbol Test Point(s) 16
13 5 234 SOG OSD ReT RGB In BLK OSD In CP In BLK In
a a 5.0 a a a 5V -1.0
Variable
7 9 11
22
1
18
Remark
33
Frequency characteristics 1 (f=200MHz)
FC1'
OUT
b SG3 0 1.0 a 5.0 -3.0 3.0 a a a dB
34
Frequency relative characteristics 1 (f=200MHz)
FC1'
-
-
Note34
35 -1.0 -
Frequency characteristics 2 (f=200MHz)
FC2
OUT
b SG3 a 5V 0
5.0
dB
Note35
36
Frequency relative characteristics 2 (f200MHz)
FC2
-
-
1.0
dB
Note36
37
Variable
Crosstalk 1 (f=50MHz) a a 5.0 a a a 5V a 5V a
Variable
CT1 a 5.0 a a
2 b SG3 OUT(29) 6 a OUT(32) 11a FFH 255
-
-25
-20
dB
Note37
38
Crosstalk 1 (f=200MHz) a
Variable
CT1'
2 b SG3 OUT(29) 6 a OUT(32) 11a
-
-20
-15
dB
Note38
39 a a a
Crosstalk 2 (f=50MHz) 5.0 a
Variable
CT2
2a OUT(29) 6 b SG3 OUT(35) 11a
a 5V a 5V a 5.0 a a 5V a
Variable
-
-25
-20
dB
Note39
40
Crosstalk 2 (f=200MHz) a a 5.0 a a
CT2'
2a OUT(29) 6 b SG3 OUT(35) 11a
-
-20
-15
dB
Note40
41
Crosstalk 3 (f=50MHz) a
Variable
CT3 a 5.0 a a
2a OUT(32) 6 a OUT(35) 11b SG3
-
-25
-20
dB
Note41
42
Crosstalk 3 (f=200MHz) a 5V a 5V a
Variable
CT3' a a a
2a OUT(32) 6 a OUT(35) 11b SG3
-
-20
-15
dB
Note42
Pulse
43 characteristics 1
(4Vp-p)
Tr
OUT
b SG1 5.0 a a a 5V a a b SG5 a a
Variable Variable
Varia ble
2.2
2.8
nS
Note43
44
Pulse characteristics 2 (4Vp-p)
Tf
OUT
b SG1 a a
5.0
Varia ble
-
2.2
2.8
nS
Note44
45
Clamp pulse threshold voltage
VthCP
OUT
b SG1 a
Variable
2.0
5.0
FFH 255
1.0
1.5
2.0
V
Note45
Clamp pulse 46 minimum width WCP a a a a b SG5 b SG5 a a
OUT
b SG1 b SG5
a
2.0
5.0
0.2
-
-
uS
Note46
47
Pedestal voltage temperature characteristics 1
PDCH
OUT
b SG1 a
a
2.0
5.0
-3.0
0
0.3
V
Note47
48
Pedestal voltage temperature characteristics 2
PDCL
OUT
b SG1
a
a
2.0
5.0
-3.0
0
0.3
V
Note48
Input
CTL voltage
BUS CTL ( H )
Standard MIN TYP MAX
3.0 6.0 ns
Note49 00H 01H 02H 03H 04H
No
Unit
Bright ABL 2.0 5.0 255 255 255 255 8
FFH FFH FFH FFH 08H
Sub Sub Sub Main cont cont cont OSD cont R G B Adj
parameter
Symbol Test Point(s) 16
13 5 234 SOG OSD ReT RGB In BLK OSD In CP In BLK In
a b SG6 a a b SG6 a a 2.0 5.0 3.0 6.0 b SG6 a a 2.0 5.0 5.6 6.4 0.8 1.0 b SG5
0FH 15
7 9 11
22
1
18
Remark
49
OSD pulse characteristics 1
OTr
OUT
a
b SG5 b SG5 7.2
08H 8
50 a
OSD pulse characteristics 2
OTf
OUT
a
ns
Note50
51
OSD adjust control characteristics 1
Oaj1
OUT
a
b SG6 -
Vp-p Note51
52 characteristics 1 b SG6 a a 2.0 5.0
08H 8
OSD adjust control relative
Oaj1
-
-
1.2
-
Note52
53
Oaj2
OUT
a
b SG6 a 2.0 5.0 -
b SG5
3.4
4.0
4.6
Vp-p Note53
54
OSD adjust control characteristics 2 OSD adjust control relative characteristics 2
Oaj2 -
-
-
0.8
1.0
1.2
-
Note54
55 -
Oaj3 a
OUT
a
b SG6 b SG6
b SG5
00H 0
0
0.7
1.2
Vp-p Note55
OSD adjust control characteristics 3 OSD adjust control relative 56 characteristics 3
Oaj3
-
-
0.8
1.0
1.2
-
Note56
57
Variable
OSD input threshold voltage 1
VthOSD1
OUT
a b SG6
Variable
b SG6 a a 2.0 5.0 b SG5 a a 2.0 5.0 b SG5 a a 2.0 5.0 b SG5 a a b SG5 a a b b SG7 SG5 Variable a a a 2.0 5.0
b SG6 b SG5
08H 8
3.1
3.5
3.9
V
Note57
58
OSD input threshold voltage 2
VthOSD2
OUT
a
08H 8
1.5
2.0
2.5
V
Note58
59
Variable
OSD BLK input threshold VthBLK voltage
OUT a
b SG6 3V
b SG1 b SG6 b SG6 a a
b SG6 3V
b SG6 b SG6
00H 0
2.2
2.7
3.2
V
Note59
OSD half adjust control 60 characteristics 1
Ohaj1
OUT
a
0FH 15
3.7
4.3
4.9
Vp-p
Note60
61
OSD half adjust control characteristics 2
Ohaj2
OUT
a
2.0
5.0
08H 8
1.9
2.5
3.0
Vp-p Note61
62
Retrace BLK i nput threshold VthRET voltag
OUT
a
2.0
5.0
00H 0
1.0
1.5
2.0
V
Note62
63
SOG input maximum noize SS - NV S on G IN Sync OUT voltage
a
a
a
b SG4
Variable
2.0
5.0
-
-
0.03
Vp-p Note63
64
SOG minimum SS - SV input voltage a a
S on G IN Sync OUT
a
a
a
b SG4
Variable
2.0
5.0
0.2
-
-
Vp-p Note64
Input
CTL voltage
BUS CTL ( H )
Standard MIN TYP MAX
4.5 4.9 5.0 V
Note65 00H 01H 02H 03H 04H
No
Unit
Bright ABL 2.0 5.0
Sub Sub Sub Main cont cont cont OSD cont R G B Adj
parameter
Symbol Test Point(s) 16
13 5 234 SOG OSD ReT RGB In BLK OSD In CP In BLK In
a a a a b SG4 b SG4 2.0 5.0 0 0.3 0.6 b SG4 2.0 5.0 0 60 b SG4 2.0
FFH FFH FFH FFH 00H
7 9 11
22
1
18
Remark
65
Sync Output Hi Level a a a a V
VSH
Sync OUT
a
66
Sync Output Lo Level a a a a 90
VSL
Sync OUT
a
Note66
67
Sync Output Delay Time1 a 5.0 a a a 0 60
TDS-F
Sync OUT
a
ns
Note67
68
Sync Output Delay Time2 a
FFH FFH FFH FFH 00H
TDS-R
Sync OUT a
b SG 5
a
90
ns
Note68
69
Icc (power save mode)
Iccps
Ips
a
a
a 4.0 5.0 255 255 255 255 0
-
22
30
mA
Note69
spot killer 70 function voltage a a a a 2.0 5.0 255 255 255 255 0
skv
Vcc (12V)
b SG 1
b SG 5
9.4
10.0
10.4
VDC Note70
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. Measuring conditions are as listed in supplementary Table. Measured with a current meter at test point IB. 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)
Note2)
Note3)
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. 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 0.7 (dB)
Note5)
Note6)
Relative maximum gain GV is calculated by the equation below: GV=VOUT(24)/VOUT(18), VOUT(28)/VOUT(31), VOUT(31)/VOUT(24) 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
Note7)
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.
MITSUBISHI
12
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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 VOUT Vp-p output amplitude when inputed SG3(1MHz) : 4.0Vp-p (dB)
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,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 VOUT Vp-p output amplitude when inputed SG3(1MHz) : 4.0Vp-p (dB)
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(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 = (Tr2) - (Tr1)
2 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 :
Tf = (Tf2) - (Tf1)
2
(nsec)
2
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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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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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%) (50%)
SyncOUT
TDS-F
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.
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M52746SP
BUS CONTROLLED 3CH VIDEO PRE-AMP FOR CRT DISPLAY MONITOR
SG No.
INPUT SIGNAL
33us
SG1 Video signal (all white) SG2 Video signal (step wave) SG3 Sine wave
(for freq. char.)
8us
Pulse with amplirude of 0.7Vp-p (f=30KHz). Video width of 25us. (75 % )
0.7VPP
0.7VP-P (Amplitude is partially variable.)
Sine wave amplitude of 0.7Vp-p. f=1MHz,50MHz,200MHz(variable)
Video width of 25us. (75 % )
SG4 Videosignal
(all white,all black) 3us 0.5us
0.7VP-P
all white or all black variable. 0.3VPP
Sync's amplitude
is variable.
Pulse width and amplitude are variable.
5VTTL
SG5 Clamp pulse SG6 OSD pulse
5us
5VTTL
Amplitude is partially variable.
SG7 BLK pulse
5us
5VTTL
Amplitude is partially variable.
*)f=30KHz
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MITSUBISHI< LINEAR IC >
M52746SP
BUS CONTROLLED 3CH VIDEO PRE-AMP FOR CRT DISPLAY MONITOR
TEST CIRCUIT
+
+
+
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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
35K
IC be used between pedestal voltage 2V and 3V.
1
Main Brightness
1
Input pulses
2
OSD IN (R)
1K
4.0~5V(light) 2.5~3V(half) 1.5V~GND
3
OSD IN (B)
Connected to GND if not used.
4
OSD IN (G)
0.5mA
3.5V
2.0V
Input pulses
R G
3.7~5V 1.7V~GND Connected to GND if
5
OSD BLK IN
5
B
0.4mA
2.7V
not used.
Clamped to about 2.5 V 2K 2K due to clamp pulses from pin 19.
6 9 11
INPUT (R)
Input at low impedance.
INPUT (B) INPUT (G)
2.5
2.5V
CP
0.3mA
7
12
VCC
12
Vcc
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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
8 10 15 19 26
NC
GND
GND
13
INPUT (S on G)
When open ~ 2.5V ~
3.2V
1K
500
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 18
Sync signal output pin, Being of open collector output type.
14
S on G Sep OUT
Input pulses 41K 2.5~5V 0.5V maximum Input at low impedance. 2.2V 0.15mA
16
Clamp Pulse IN
19
17
VCC (5V)
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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
SCL of I C BUS (Serial clock line) 50K VTH=2.3V
2
20
SCL
20
2K 3V
50K
SDA of I C BUS (Serial data line) VTH=2.3V
2
21
SDA
21
2K 3V
Input pulses 50K
R G B
2.5~5V 0.5V maximum Connected to GND if not used.
22
Retrace BLK IN
22
2.25V
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MITSUBISHI< LINEAR IC >
M52746SP
BUS CONTROLLED 3CH VIDEO PRE-AMP FOR CRT DISPLAY MONITOR
No. 23 27 30
Name GND (B) GND (G) GND (R)
DC Voltage (V)
peripheral Circuit
Remark
GND of Rch, Gch and Bch
0
50
A resistor is needed on the GND side. Set discretionally to maximum
24 28 31 25
OUTPUT (B) OUTPUT (G) OUTPUT (R)
Variable
50
15 mA, depending on the required driving capacity.
Used to supply power to
12 29 32 VCC 2 Impre ssed
output emitter follower only.
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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 FFH Main Contrast Control Data OSD Adjust Control Characteristics 000H
Main Contrast : MAX 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
FH
0 12
ABL Control Voltage(VDC)
Sync separate input min sync width
5
(Video Duty=75 % )
4
8 Sync separate normal operating range
2
1u
4 7 100K
00
Brightness Control Voltage(VDC)
5
IN
0
input amplitude(Vp-p)
0.5
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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.
~
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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
1K
0.01u
4.7u
1K
0.01u
1K
0 ~ 5V
SCL ABL IN
17
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
M52746SP
1 2 3 4 5 6 7 8 9 10 11
0.01u 1u 47u 3.3u 0.01u 75 5VTTL 5VTTL 5VTTL 5VTTL 2.5VTTL 2.5VTTL 2.5VTTL 3.3u 0.01u 75 75 0.01u
12
13
14
100K
15
16
1K
NC
0.01uu 3.3u 47u 0~5V
Sync Sep OUT ClampPulse IN BLK IN (for OSD) OSD IN (G) OSD IN (B) OSD IN (R)
12V
0.01u
47u
5V INPUT (R) INPUT (B) INPUT (G) SONG INPUT
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