Datasheet M52746SP Datasheet (Mitsubishi)

DISCRIPTION

PIN CONFIGURATION

NC

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)

MITSUBISHI< LINEAR IC >

M52746SP

BUS CONTROLLED 3CH VIDEO PRE-AMP FOR CRT DISPLAY MONITOR

Brightness
OSD IN (R)
OSD IN (B)
OSD IN (G)

OSD BLK IN

INPUT (R)

VCC 12V

INPUT (B)

GND

INPUT (G)

VCC 12V

INPUT(SOG)

SOG Sep OUT

Clamp Pulse IN

1 32
2 31
3 30
4 29
5
6
7
8

9 24
10 23
11
12

13 20
14 19
15
16

Outside Package: 32P4B

VCC 12V (R)
OUTPUT(R)
GND(R)
VCC 12V (B)

28

OUTPUT(B)

27

GND(B)

26

GND

25

VCC 12V (G)
OUTPUT(G)
GND(G)

22

Retrace BLK IN

21

SDA
SCL
GND

18

ABL IN

17

VCC 5V

Main Contrast and Sub Contrast can be controlled by I2C

Bus.

STRUCTURE

Bipola Silicon Monolisic IC

APPLICATION

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

32 pin plastic SDIP

MITSUBISHI

1

25

MITSUBISHI< LINEAR IC >

BUS CONTROLLED 3CH VIDEO PRE-AMP FOR CRT DISPLAY MONITOR

Absolute Maximum Rating (Ambient temperature: 25 C)

Parameter Symbol Rating Unit

M52746SP

Supply voltage 12

Supply voltage 5

Power dissipation

Ambient temperature

Storage temperature

Recommended supply 12
Recommended supply 5

voltage range 12

voltage range 5

Case temperature

Thermal Derating Curve

2800

Vcc12

Vcc 5

Pd
Topr
Tstg

Vopr 12
Vopr 5

Vopr' 12
Vopr' 5

jc

13.0

6.0 V

2358

-20~ +75

-40~ +150

12.0

5.0

10.5~12.5 ( Typ 12.0V )

4.5~5.5 ( Typ 5.0V )
28

V

mW

C
C
V

V
V

V

C/W

2400

2358

2000

1600

1200

800

400

-20

1415

attached
board

0

25 50

75

100 125 150

Ambient temperature Ta( C)

MITSUBISHI

2

25

Fig. 1
Block Diagram

MITSUBISHI< LINEAR IC >

M52746SP

BUS CONTROLLED 3CH VIDEO PRE-AMP FOR CRT DISPLAY MONITOR

MITSUBISHI

3

25

BUS CONTROL TABLE

(1) Slave address:

D7 D6 D5 D4 D3 D2 D1 R/W

0

1

0

(2) Each function's sub address:

0 1 0

MITSUBISHI< LINEAR IC >

M52746SP

BUS CONTROLLED 3CH VIDEO PRE-AMP FOR CRT DISPLAY MONITOR

0 0

=88H

NO.

1

2

3

4

5

function bit sub

add. D7 D6 D5 D4 D3 D2 D1 D0

Main contrast 8

Sub contrast R 8

Sub contrast G 8

Sub contrast B 8

OSD level 4 - - - - A43 A42 A41 A40

00H

01H

02H

03H

04H

Data Byte(up:bit information down:preset)

A07 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

0 0 0 0 1 0 0 0

MITSUBISHI

4

25

I C BUS CONTROL SECTION

2

SDA,SCL CHARACTERISTICS

MITSUBISHI< LINEAR IC >

M52746SP

BUS CONTROLLED 3CH VIDEO PRE-AMP FOR CRT DISPLAY MONITOR

parameter

min. input LOW voltage.
max. input HIGH voltage.
SCL clock frequency.

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.
The HIGH period of the clock.

Srt up time for start condition. (Only relevant for a repeated
start condition.)

Hold time DATA.
Set-up time DATA.

Rise time of both SDA and SCL lines.

symbol

VIL
VIH
fSCL

tBUF

tHD:STA

tLOW
tHIGH
tSU:STA

tHD:DAT
tSU:DAT
tR

MIN MAX

-0.5 1.5

3.0

0 100 KHz

4.7

4.0

4.7

4.0

4.7

0

250

-

5.5 V

-

-

-

-

-

-

-

1000

unit

V

us

us

us
us

us

us

ns

ns

Fall time of both SDA and SCL lines.

Set-up time for stop condition.

tR, tF

VIL

SDA

VIH

tHD:STA

tSU:DAT

VIL

SCL

VIH

tLOW

S S P S

tHIGH

tHD:DAT

tSU:STA

tF
tSU:STO

4.0

-

tSU:ST

O

300

tBUF

ns

-

us

MITSUBISHI

5

25

MAX

22

00H

cont

01H

02H

03H

04H

R

G

B

Adj

Re-

Circuit current1

Variable

255

255

255

255

0

100

255

200

100

20

255

100

100

100

200

200

200

17.1

17.7

16.5

10.5

16.5

12.0

255

Circuit current2

range
Maximum input

Maximum gain

maximum gain

characteristics 1

characteristics 1

characteristics 1

characteristics 1

characteristics 2

characteristics 2

characteristics 3

characteristics3

characteristics 2

characteristics 2

Note1

Note2

Note3

Note4

Note5

Note6

Note7

Note8

Note9

Note10

Note11

Note13

Note15

Note12

Note14

Note16

mark

Unit

Standard

MIN TYP

OSD

BUS CTL ( H )

Sub

cont

Sub

cont

Sub

cont

Main

18

ABL

1

CTL voltage

Bright

mA

00H
FFH
FFH
FFH
FFH

5.0

4.0

135

110

-

mA

35

18

-

5.0

4.0

Vp-p

-

6.0 8.0

5.0

Variable

64H

Vp-p

-

-

1.6

5.0

2.0

dB

FFH

19.4

5.0

2.0

-

0.8 1.0 1.2

-

-

-

dB

C8H

19.0

15.0

5.0

2.0

-

0.8 1.0 1.2

-

-

-

64H

dB

13.0

9.0

5.0

2.0

-

0.8 1.0 1.2

-

-

-

14H

Vp-p

0.1 0.5 0.8

5.0

2.0

-

-

-

-

0.8 1.0 1.2

C8H
C8H
C8H
FFH

dB

19.0

15.5

5.0

2.0

-

0.8 1.0 1.2

-

-

-

-

-

-

64H
64H

64H

FFH

dB

13.0

9.0

2.0 5.0

-

0.8 1.0 1.2

-

-

-

-

-

-

In

13

SOG

a a

16

ReT

CP In

BLK

b

SG5

a a

b

Input

2 3 4

OSD In

a a

a

IA

Icc1

a a

a

IB

Icc2

5

OSD

7 9 11

Test

Point(s)

Symbol

BLK

RGB In

parameter

Supplementary Table1 Electrical Characteristics (Vcc= 12V,5V; Ta= 25 C unless otherwise specified)

No

1

2

a a

a a

a a

SG5bSG5bSG5bSG5

a

a

a a

a a

b

b

SG2

OUT

Vomax

Output dynamic

3

SG2

IN

OUT

Vimax

4

B

SG1

OUT

Gv

5

-

-

-

-

-

-

-

Gv

Relative

6

aa

b

SG5

aa

b

AG1

OUT

VC1

control

Main contrast

Main contrast

7

-

-

a a

-

b

SG5

-

-

a a

-

b

SG1

­OUT

VC1

VC2

control

Main contrast

control relative

8

9

-

-

-

b

-

-

-

b

-

VC2

Main contrast

Main contrast

control relative

10

SG5

a a a a

SG1

OUT

VC3

control

11

-

-

-

b

-

-

-

b

-

VC3

Sub contrast

Main contrast

control relative

12

SG5

a a a a

SG1

OUT

VSC1

control

13

-

-

-

-

-

-

-

VSC1

Sub contrast

Sub contrast

control relative

14

b

a a a a

b

OUT

VSC2

control

15

SG5

SG1

Sub contrast

-

-

-

-

-

-

-

VSC2

control relative

16

MAX

22

00H

cont

01H

02H

03H

04H

R

G

B

Adj

Re-

characteristics 1

ABL1

ABL1

255

20

20

20

0

200

200

200

200

255

255

255

255

Note17

Note18

Note19

Note20

Note21

Note22

Note23

Note24

Note25

Note26

Note27

Note29

Note31

Note28

Note30

Note32

characteristics 3

characteristics 3

characteristics

characteristics 1

characteristics2

characteristics 2

characteristics 1

characteristics 1

characteristics 2

characteristics 2

characteristics 3

characteristics 3

(f=50MHz)

(f=50MHz)
able

mark

Unit

Standard

MIN TYP

OSD

BUS CTL ( H )

Sub

cont

Sub

cont

Sub

cont

Main

18

ABL

1

CTL voltage

Bright

00H
14H
14H
14H
FFH

0.1 0.5 0.8 Vp-p

2.0 5.0

-

0.8 1.0 1.2

-

-

-

-

-

C8H
C8H

C8H
C8H

Vp-p

4.63.6 4.8

2.0 5.0OUT

-

-

-

-

-

-

-

0.8 1.0 1.2

FFH
FFH
FFH
FFH

Vp-p

4.7 5.5 6.3

2.0 4.0OUT

-

0.8 1.0 1.2

-

-

Vp-p

1.7 2.2 2.7

2.0

2.0

-

0.8 1.0 1.2

-

-

V

3.3 3.8 4.2

4.0 5.0OUT

-

-0.3 0 0.3

-

-

V

1.5 1.8 2.1

2.0 5.0OUT

-

-0.3 0 0.3

-

-

V

0.5 0.9 1.1

1.0 5.0OUT

-

-0.3 0 0.3

-

-

Vari

dB

2.5

0

-2.0

5.0OUT

-1.0 0 1.0 dB

-

-

-

13

16

Input

7 9 11

Test

In

SOG

ReT

BLK

CP In

2 3 4

OSD In

5

OSD

BLK

RGB In

Point(s)

Symbol

Sub contrast

parameter

No

a

a

b

a a

b

OUT

VSC3

control

17

SG5

SG1

Sub contrast

-

-

a a

- -

b

SG5

- -

a a

b

SG1

- -

VSC3

VMSC

Main/sub

control relative

contrast control

18

19

a a

b

SG5

- -- - - --

a a

b

SG1

VMSC

ABL control

control relative

characteristics

Main/sub contrast

20

21

- -- - - --

relative

ABL control

22

a a

b

SG5

a a

b

SG1

OUT

ABL2

ABL control

ABL control

23

- -- - - --

ABL2

relative

24

a

a

b

SG5

a a

a

VB1

control

Brightness

25

- -- - - --

VB1

Brightness

Brightness

control relative

26

a a

b

a a

a

VB2

control

27

SG5

Brightness

a a

b

SG5

a a

- -- - - --

a

VB2

VB3

control

Brightness

control relative

28

29

- -- - - --

VB3

Brightness

control relative

30

a

a

a

5V

a a

b

SG3

FC1

Frequency

characteristics 1

Frequency relative

31

- -- - - --

FC1

characteristics 1

32

MAX

22

00H

cont

01H

02H

03H

04H

R

G

B

Adj

Re-

0

255

255

255

OUT(32)

11a

11a

11b SG3

11a

OUT(35)

11a

OUT(35)

11b SG3

Variable

255

255

Variable

OUT(32)

OUT(35)

OUT(35)

1 (f=200MHz)

2 (f=200MHz)

voltage

characteristics 1

characteristics 2

Note33

Note34

Note35

Note36

Note37

Note38

Note39

Note40

Note41

Note42

Note43

Note44

Note45

Note46

Note47

Note48

Variable

ble

ble

ble

mark

Unit

Standard

MIN TYP

OSD

BUS CTL ( H )

Sub

cont

Sub

cont

Sub

cont

Main

00H
FFH
FFH
FFH

-3.0 0 3.0 dB

-1.0 0 1.0 dB

-3.0 3.0 5.0 dB

-1.0 0 1.0 dB

FFH

-25 -20 dB

-

-20 -15 dB

-

-25 -20 dB

-

-20 -15 dB

-

-25 -20 dB

-

-20 -15 dB

-

nS

2.8

2.2

-

nS

2.8

2.2

-

FFH

V

V

-

1.0 1.5 2.0 V

0.2 - uS

-3.0 0 0.3

-3.0 0 0.3

18

1

13

Bright

SOG

CTL voltage

ReT

16

Input

2 3 4
5

OSD

7 9 11

Test

Point(s)

Symbol

ABL

a

In

a

BLK

a

CP In

OSD In

a a

BLK

b

RGB In

5.0

5V

SG3

OUT

FC1'

--

-

- - --

FC1'

5.0OUT

Variable

a a

a

a a

b

FC2

5V

SG3

- - -- - --

FC2

5.0

Variablea a

a a

a

5V

2 b SG3

6 a

OUT(29)

CT1

5.0

Variable

a

5V

a a a a

2 b SG3

6 a

OUT(29)

CT1'

5.0

Variablea a a a

a

2 a

6 b SG3

OUT(29)

CT2

5V

5.0

Variablea a a a

a

2 a

6 b SG3

OUT(29)

CT2'

5V

5.0

Variablea a a a

a

2 a

6 a

OUT(32)

CT3

5V

5.0

Variablea a a a

a

5V

2 a

6 a

OUT(32)

CT3'

5.0OUT

5.0OUT

2.0 5.0OUT

2.0 5.0OUT

2.0 5.0OUT

Variablea a a a

Variablea a a a

a

a

a

a

SG5

b

b

a

5V

b

a

5V

SG5

a

a a

a

b

b

b

SG1

VthCP

b

SG1bSG1

WCP

Tr

SG1

SG1

Tf

2.0 5.0OUT

a

a

a

a

SG5bSG5

a

a a

a

b

PDCL

PDCH

SG1

Frequency

parameter

No

Frequency relative

33

characteristics 1

34

characteristics

(f=200MHz)

Frequency

characteristics

characteristics 2

Frequency relative

35

(f200MHz)

Crosstalk 1

36

(f=50MHz)

Crosstalk 1

37

Crosstalk 2

(f=200MHz)

38

39

(f=50MHz)

Crosstalk 2

(f=200MHz)

40

(f=50MHz)

Crosstalk 3

Crosstalk 3

41

Pulse

(f=200MHz)

characteristics 1

42

43

Pulse

(4Vp-p)

characteristics 2

44

(4Vp-p)

Clamp pulse

threshold

45

Clamp pulse

temperature

Pedestal voltage

minimum width

46

Pedestal voltage

47

temperature

48

MAX

22

00H

cont

01H

02H

03H

04H

R

G

B

Adj

Re-

VthOSD1

8

255

255

255

255

Sync OUT

15

8

0

8

0

Variable
Variable

Variable

8
characteristics 1

characteristics 2

characteristics 2

voltage 1

Variable

voltage

voltage
Note49

Note50

Note51

Note52

Note53

Note54

Note55

Note56

Note57

Note58

Note59

Note60

Note61

Note62

Note63

Note64

Variable

VthOSD2

8

Variable

voltage 2

15

3V

0

3V

8

characteristics 2

mark

Unit

Standard

MIN TYP

OSD

BUS CTL ( H )

Sub

cont

Sub

cont

Sub

cont

Main

18

ABL

1

CTL voltage

Bright

08H
FFH
FFH
FFH
FFH

ns

3.0 6.0

-

2.0 5.0

08H

3.0 6.0 ns

-

2.0 5.0OUT

0FH

7.2 Vp-p

6.4

5.6

2.0 5.0

-

0.8 1.0 1.2

-

- -

08H

3.4 4.0 4.6 Vp-p

2.0 5.0OUT a a

-

0.8 1.0 1.2

-

- -

00H

Vp-p

1.2

0.7

0

2.0 5.0

-

0.8 1.0 1.2

-

08H

3.1 3.5 3.9 V

2.0 5.0OUT

08H

1.5 2.0 2.5 Vaa

2.0 5.0OUT

2.2 2.7 3.2 Va

00H

2.0 5.0

0FH

3.7 4.3 4.9 Vp-p

2.0 5.0

08H

00H

1.0 1.5 2.0 V

2.0 5.0

Vp-p

0.03

-

-

2.0 5.0

Vp-p-

-

0.2

2.0 5.0

13

16

Input

7 9 11

Test

In

SOG

ReT

BLK

CP In

2 3 4

OSD In

5

OSD

BLK

RGB In

Point(s)

Symbol

parameter

OSD pulse

No

a a

a a

b

SG5bSG5bSG5

b

SG6bSG6bSG6

a

a

a

a

OUT

OTf

OTr

OSD pulse

OSD adjust

49

50

a

- -

a

-

b

control

- -

SG6

-

a

-

OUT

Oaj1

Oaj1

OSD adjust

control relative

characteristics 1

51

52

b

SG5

b

SG6

b

SG6

a

Oaj2

control

OSD adjust

OSD adjust

characteristics 1

characteristics 2

53

a

a

- -

b

-

b

b

- -

a

-

-

OUT

Oaj2

Oaj3

control

OSD adjust

control relative

54

55

SG5

SG6

SG6

b

- -- - - -- - -

Oaj3

OSD input

OSD adjust

control relative

characteristics 3

characteristics 3

56

aa

b

SG5

SG6

b

SG6

a

threshold

57

b

SG5

b

SG6

b

SG6

a

threshold

OSD input

58

a

b

b

SG5

a

b

SG6

b

b

SG6

SG1

b

OUT

control

threshold

OSD BLK input

OSD half adjust

59

a

a

b

SG5

SG5

b

SG6

b

SG6

SG6

a 1.9 2.5 3.0 Vp-p

a

OUT

Ohaj2 2.0 5.0OUT a a

Ohaj1

control

OSD half adjust

characteristics 1

60

61

a

b

b

SG7

b

SG5

a

a

a

OUT

VthRET

voltag

SOG input

Retrace BLK i

nput threshold

62

b

SG4

SG4

a

a

a

a

a

a a

a

a

a

S on G IN

S on G IN

Sync OUT

SS - SV

maximum noize

63

input voltage

SOG minimum

64

MAX

22

00H

cont

01H

02H

03H

04H

R

G

B

Adj

Re-

VSL

Ips

255

255

255

255

0

10.0

10.4

1

5

mode)
Note65

Note66

Note67

Note68

Note69

Note70

5

255

255

255

255

0

Unit

mark

mA

VDC

Standard

MIN TYP

OSD

BUS CTL ( H )

Sub

cont

Sub

cont

Sub

cont

Main

18

ABL

1

13

Bright

SOG

CTL voltage

ReT

16

In

BLK

CP In

0 0.3 0.6 V

2.0 5.0

a

a

SG4

0 60 90 ns

2.0 5.0

b

SG4bSG4

a

a

4.5 4.9 5.0 V

2.0 5.0

b

b

SG4

a

a

0 60 90 ns

2.0 5.0

a

a

b

00H
FFH
FFH
FFH
FFH

SG

- 22 30

4.0 5.0

a

a

9.4

00H
FFH
FFH
FFH
FFH

2.0 5.0

a

a

b

SG

Input

7 9 11

Test

2 3 4

OSD In

5

OSD

BLK

RGB In

Point(s)

Symbol

parameter

Sync Output Hi

No

a

a

a

Sync

VSH

Level

65

OUT

a

a

a

Sync

Level

66

OUT

Sync

Sync Output

a

a

a

a

a

a

OUT

Sync

TDS-F

TDS-R

Delay Time1

Sync Output

67

68

a

a

a

OUT

Iccps

Icc

(power save

Delay Time2

69

a

a

b

SG

Vcc

(12V)

skv

spot killer

70

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)

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:

VC1=20 LOG

0.7

VOUT

(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.

11

MITSUBISHI

25

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:

VSC1=20 LOG (dB)

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:

VMSC1=20 LOG (dB)

VOUT

0.7

VOUT

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

25

MITSUBISHI< LINEAR IC >

Note31) First, SG3 to 1MHz is as input signal. Input a resister that is about 2K to offer the voltage at input

M52746SP

BUS CONTROLLED 3CH VIDEO PRE-AMP FOR CRT DISPLAY MONITOR

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

output amplitude when inputed SG3(1MHz) : 4.0Vp-p

VOUT Vp-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,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

output amplitude when inputed SG3(1MHz) : 4.0Vp-p

VOUT Vp-p

(dB)

(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:

CT3=20 LOG

VOUT(28,31)

VOUT(24)

(dB)

Note42) Measuring condition and procedure are the same as described in Note41,expect SG3 to 200MHz.

13

25

MITSUBISHI

MITSUBISHI< LINEAR IC >

pulse to rise from 10 % to 90 % (Tr2) with an active prove.

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 characteristics Tr is calculated by the equations below :

Tr = (Tr2) - (Tr1) (nsec)

2 2

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) (nsec)

100%

0%

2 2

Tr1
or
Tr2

90%

10%

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

14

25

MITSUBISHI

MITSUBISHI< LINEAR IC >

Measure the SG6 level when the output reaches 0V. The measured value is called VthOSD2.

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.

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.

15

25

MITSUBISHI

MITSUBISHI< LINEAR IC >

Note63) The sync's amplitude of SG4 be changed all white into all black, increase from 0Vp-p to 0.03Vp-p.

Measure the time needed for the rear edge of SG4 sink to fall from 50 % and for SyncOUT to rise

M52746SP

BUS CONTROLLED 3CH VIDEO PRE-AMP FOR CRT DISPLAY MONITOR

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.

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

sync (50%)

SyncOUT

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.

TDS-F

(50%)

TDS-R

Pedestal voltage

16

25

MITSUBISHI

MITSUBISHI< LINEAR IC >

SG No.

INPUT SIGNAL

SG1

(all white)

SG2

(step wave)

SG3

SG4

SG5

pulse

SG6

OSD pulse

SG7

BLK pulse

M52746SP

BUS CONTROLLED 3CH VIDEO PRE-AMP FOR CRT DISPLAY MONITOR

Video signal

Video signal

Sine wave

(for freq. char.)

8us

33us

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 % )

0.7VP-P

all white or all black
variable.

Videosignal

(all white,all black)

Clamp

5us

3us

0.5us

5us

5VTTL

0.3VPP

Amplitude is partially
variable.

Amplitude is partially variable.

Sync's amplitude

is variable.

Pulse width and
amplitude are variable.

5VTTL

5VTTL

MITSUBISHI

*)f=30KHz

17

25

TEST CIRCUIT

+

MITSUBISHI< LINEAR IC >

M52746SP

BUS CONTROLLED 3CH VIDEO PRE-AMP FOR CRT DISPLAY MONITOR

+

+

MITSUBISHI

18

25

OSD IN (R)

OSD IN (B)

OSD IN (G)

Terminal Description

2.5

2.5V

INPUT (R)

INPUT (B)

INPUT (G)

Input at low impedance.

Input pulses

Main Brightness

1

OSD BLK IN

RGB

Input pulses

12

VCC

No.

1

Name

DC
Voltage

(V)

MITSUBISHI< LINEAR IC >

M52746SP

BUS CONTROLLED 3CH VIDEO PRE-AMP FOR CRT DISPLAY MONITOR

peripheral Circuit

35K

It is recommended that the
IC be used between pedestal
voltage 2V and 3V.

Remark

2

1K

3

2.0V

2K

3.5V

2.7V

2K

4

5

0.5mA

5

0.4mA

Connected to GND if

not used.

Connected to GND if
not used.

Clamped to about 2.5 V
due to clamp pulses
from pin 19.

4.0~5V(light)

2.5~3V(half)

1.5V~GND

3.7~5V

1.7V~GND

6

9

11

7

12

CP

0.3mA

MITSUBISHI

Vcc

19

25

MITSUBISHI< LINEAR IC >

NC

18

INPUT (S on G)

7

GND

GND

16

Clamp Pulse IN

Input pulses

Input at low impedance.

17

VCC (5V)

M52746SP

BUS CONTROLLED 3CH VIDEO PRE-AMP FOR CRT DISPLAY MONITOR

No.

8

10
15
19
26

13

Name

DC
Voltage

(V)

When
open

~

2.5V

~

peripheral Circuit

1K

3.2V

500

Remark

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.

Sync signal output pin,

Being of open collector output
type.

14

S on G Sep OUT

41K

2.5~5V

0.5V

19

2.2V

0.15mA

maximum

MITSUBISHI

20

25

20

20

SCL

21

21

SDA

2

2

No.

ABL IN

15

18

22

2.25V

R

G

B

Input pulses

0.5V

Name

DC

Voltage

(V)

When
open

2.5V

0.5mA

MITSUBISHI< LINEAR IC >

M52746SP

BUS CONTROLLED 3CH VIDEO PRE-AMP FOR CRT DISPLAY MONITOR

peripheral Circuit

20K

1.2K1.2K 30K

50K

2.5V

ABL(Automatic Beam Limitter)
input pin.
Recommended voltage range
is 0 to 5V.
When ABL function is not used,
set to 5V.

SCL of I C BUS

(Serial clock line)

VTH=2.3V

Remark

Retrace BLK IN

2K

3V

SDA of I C BUS

50K

2K

3V

50K

22

(Serial data line)

VTH=2.3V

2.5~5V

maximum

Connected to GND if not

used.

MITSUBISHI

21

25

No.

2550VCC 2

12

ssed

28

OUTPUT (G)

31

OUTPUT (R)

24

OUTPUT (B)

27

GND (G)

30

GND (R)

23

GND (B)

0

29

32

Name

DC

Voltage

(V)

MITSUBISHI< LINEAR IC >

M52746SP

BUS CONTROLLED 3CH VIDEO PRE-AMP FOR CRT DISPLAY MONITOR

peripheral Circuit

GND of Rch, Gch and Bch

Remark

Variable

Impre

-

50

A resistor is needed on the GND
side.
Set discretionally to maximum
15 mA, depending on the required
driving capacity.

Used to supply power to

output emitter follower only.

MITSUBISHI

22

25

MITSUBISHI< LINEAR IC >

Electrical Chracteristics

M52746SP

BUS CONTROLLED 3CH VIDEO PRE-AMP FOR CRT DISPLAY MONITOR

Main Contrast Control Characteristics

6

4

2

Sub Contrast : MAX

0

00H

Main Contrast Control Data

OSD Adjust Control Characteristics

6

FFH

Sub Contrast Control Characteristics

6

4

2

Main Contrast : MAX

0

00H

Sub Contrast Control Data

ABL Characteristics

FFH

4

2

0

0H

OSD Adjust Control Data

Brightness Control Characteristics

6

4

2

FH

1u

7

100K

12

Main Contrast : MAX
Sub Contrast : MAX

0

ABL Control Voltage(VDC)

Sync separate input min sync width

5

(Video Duty=75 % )

8

Sync separate
normal operating range

4

0

0

Brightness Control Voltage(VDC)

5

IN

0

MITSUBISHI

input amplitude(Vp-p)

23

0.5

25

CLAMP PULSE INPUT

Application Method for M52746SP

Clamp pulse width is recommended
above 15 KHz, 1.0 usec
above 30 KHz, 0.5 usec
above 64 KHz, 0.3 usec .

MITSUBISHI< LINEAR IC >

M52746SP

BUS CONTROLLED 3CH VIDEO PRE-AMP FOR CRT DISPLAY MONITOR

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

24

25

APPLICATION

EXAMPLE

110V

12345678910111213141516171832313029282726252423222120

19

M52746SP

3.3u

1K

0.01u

0.01u

3.3u

75

100K

0.01u

47u

0.01u

47u

0.01uu

3.3u

0.01u

75

47u

5V

5V

5V

5V

0~5V

Cut Off Adjj

1K1K1K

1u

75NC4.7u

0.01u

4.7u

0.01u

4.7u

0.01u

2.5V

2.5V

2.5V

MITSUBISHI< LINEAR IC >

M52746SP

BUS CONTROLLED 3CH VIDEO PRE-AMP FOR CRT DISPLAY MONITOR

CRT

DAC IC

TTL

BLK IN
(for retrace)

5VTTL

SDA

0 ~ 5V

SCL
ABL IN

Sync Sep
OUT

ClampPulse

TTL

TTL

TTL

TTL

TTL

TTL

IN

BLK IN
(for OSD)
OSD IN (G)

OSD IN (B)
OSD IN (R)

12V

5V

INPUT
(R)

INPUT
(B)

INPUT
(G)

MITSUBISHI

SONG
INPUT

25

25