M52742SP MITSUBISHI, M52742SP Datasheet

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M52742SP

Manufacturer Part Number
M52742SP
Description
3-channel video preamp for CRT display monitor
Manufacturer
MITSUBISHI
Datasheet

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DESCRIPTION
M52742SP is semiconductor integrated circuit for CRT display
monitor.
It includes OSD blanking, OSD mixing, retrace blanking, wide band
amplifre, brightness control, uniformity function.
Main/sub contrast and OSD adjust function can be controlled by I
bus.
FEATURES
STRUCTURE
Bipola silicon monolisic IC
APPLICATION
CRT display monitor
RECOMMENDED OPERATING CONDITION
Supply voltage range......................11.5 to 12.5V (V3, V8, V12, V36)
Rated supply voltage..................................12.0V (V3, V8, V12, V36)
MAJOR SPECIFICATION
Bus controlled 3ch video pre-amp with OSD mixing function and
retrace blanking function
1
Frequency band width: RGB.............................200MHz (at -3dB)
Input
Output :RGB..........................................................5.5V
Main contrast and sub contrast can be controlled by I
Include internal and external pedestal clamp circuit
PRELIMINARY
Notice:This is not a final specification.
Some parametric limits are subject to change.
:RGB.............................................................0.7V
OSD..........................................3V
BLK (for OSD)..........................3V
Retrace BLK.............................3V
OSD..............................................................5V
OSD..............................................80MHz
BUS CONTROLLED 3-CHANNEL VIDEO PREAMP FOR CRT DISPLAY MONITOR
P-P
P-P
P-P
minimum (positive)
minimum (positive)
minimum (positive)
4.5 to 4.4V (V17)
2
C bus.
5.0V (V17)
P-P
P-P
P-P
(max.)
(max.)
(typ.)
2
C
PIN CONFIGURATION (TOP VIEW)
UNIFORMITY IN
SOG SEP OUT
INPUT(SOG)
OSD BLK IN
OSD IN(G)
OSD IN(R)
OSD IN(B)
GND 1(R)
INPUT(G)
GND 1(G)
INPUT(R)
INPUT(B)
GND 1(B)
V
V
V
V
ABL IN
CC1
CC1
CC
CC1
=5V
(G)
(R)
(B)
10
11
12
13
14
15
16
17
18
1
2
3
4
5
6
7
8
9
Outline 36P4E
MITSUBISHI ICs (Monitor)
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
M52742SP
V
OUTPUT(R)
EXT FEED BACK(R)
GND2
OUTPUT(G)
EXT FEED BACK(G)
MAIN BRIGHTNESS
OUTPUT(B)
EXT FEED BACK(B)
RETRACE BLK IN
D/A OUT1
D/A OUT2
D/A OUT3
D/A OUT4
GND(5V)
SDA
SCL
CLAMP PULSE IN
CC2

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M52742SP Summary of contents

Page 1

... Notice:This is not a final specification. Some parametric limits are subject to change. BUS CONTROLLED 3-CHANNEL VIDEO PREAMP FOR CRT DISPLAY MONITOR DESCRIPTION M52742SP is semiconductor integrated circuit for CRT display monitor. It includes OSD blanking, OSD mixing, retrace blanking, wide band amplifre, brightness control, uniformity function. ...

Page 2

... PRELIMINARY Notice:This is not a final specification. Some parametric limits are subject to change. BUS CONTROLLED 3-CHANNEL VIDEO PREAMP FOR CRT DISPLAY MONITOR BLOCK DIAGRAM MITSUBISHI ICs (Monitor) M52742SP 2 ...

Page 3

... SG5 255 b FFH 2.0 5.0 SG5 255 2.0 5.0 FFH SG5 255 MITSUBISHI ICs (Monitor) M52742SP Unit BUS CTL (H) Limits 01H 02H 03H 04H 05H 06H 07H 08H 09H 0BH INT Sub Sub Sub OSD BLK D/A D/A D/A D/A Min ...

Page 4

... Vari able 5 Vari able 5 Vari able 5.0 5V MITSUBISHI ICs (Monitor) M52742SP BUS CTL (H) 01H 02H 03H 04H 05H 06H 07H 08H 09H 0BH INT Sub Sub Sub OSD BLK D/A D/A D/A D/A Min. Typ. Max. EXT cont cont cont cont ...

Page 5

... SG4 2.0 5.0 SG4 2.0 5.0 SG4 MITSUBISHI ICs (Monitor) M52742SP BUS CTL (H) Limits 01H 02H 03H 04H 05H 06H 07H 08H 09H 0BH INT Sub Sub Sub OSD BLK D/A D/A D/A D/A Min. Typ. Max. EXT cont ...

Page 6

... Main contrast control characteristics2 C2 Measuring condition and procedure are the same as described Main contrast control relative characteristics2 C2 Measuring condition and procedure are the same as described MITSUBISHI ICs (Monitor) M52742SP BUS CTL (H) Limits 01H 02H 03H 04H 05H 06H 07H 08H 09H 0BH INT ...

Page 7

... Measuring condition and procedure are the same as described (dB) V Brightness control relative characteristics3 B3 Measuring condition and procedure are the same as described MITSUBISHI ICs (Monitor) M52742SP ABL1= VOUT (29)/VOUT (32), VOUT (32)/VOUT (35), VOUT (35)/VOUT (29) is calculated by the difference in the VOUT (29)/VOUT (32), B1 VOUT (32)/VOUT (35), VOUT (35)/VOUT (29 ...

Page 8

... 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. (dB) Pulse characteristics TF is calculated by the equations below : MITSUBISHI ICs (Monitor) M52742SP VOUT (29, 32) C.T.2=20 log (dB) VOUT (35) VOUT (29, 32) C ...

Page 9

... 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. MITSUBISHI ICs (Monitor) M52742SP Oaj1= VOUT (29)/VOUT (32), VOUT (32)/VOUT (35), VOUT (35)/VOUT (29) ...

Page 10

... VuniA is amplitude output at OUT (29, 32, 35), when SG6 is low voltage. VuniB is amplitude output at OUT (29, 32, 35), when SG6 is high voltage. moduration ratio UNI (UNI2) is calculated by the equation below; OUT Pedestal voltage (50%) SG6 TDS-R MITSUBISHI ICs (Monitor) M52742SP UNI1 (UNI2)=100 (VuniB/VuniA-1) (%) VuniB VuniA Pedestal voltage 5V (2.5V ) P-P ...

Page 11

... A67 A66 8 06H 1 0 A77 A76 8 07H 1 0 A87 A86 8 08H 1 0 A97 A96 8 09H 0BH 0 0 MITSUBISHI ICs (Monitor) M52742SP =DCH DATA BYTE A P STOP condition A05 A04 A03 A02 A15 A14 A13 A12 A25 A24 A23 A22 0 0 ...

Page 12

... Set-up time for stop condition SU:STO TIMING DIAGRAM V IH SDA HD:STA V IH SCL LOW S Parameter SU:STA t t SU:DAT HD:DAT t HIGH MITSUBISHI ICs (Monitor) M52742SP Min. -0.5 3.0 0 4.7 4.0 4.7 4.0 4.7 0 250 4.0 t BUF t SU:STO S P Max. Unit 1.5 V 5.5 V 100 kHz ...

Page 13

... OSD pulse SG7 BLK pulse Signals (f=30kHz). Video width (75 TTL 5 s MITSUBISHI ICs (Monitor) M52742SP 0.7V P-P 0.7V P-P (Amplitude is partially variable.) Sine wave amplitude of 0.7V . P-P f=1MHz, 50MHz, 150MHz (variable) all white or all black 0.7V P-P variable. Sync’s amplitude ...

Page 14

... M52742SP G SonG 12V osd gnd 100k IN ( 0.01 3.3 3.3 1 SW6 SW7 SW9 SW11 SG4 MITSUBISHI ICs (Monitor) M52742SP D/A D/A D/A D/A SDA OUT1 OUT2 OUT3 OUT4 dac dac dac dac gnd sda B 12V osd gnd abl UNI (11) 0.01 ...

Page 15

... ABL CONTROL VOLTAGE (V 15 MAIN CONTRAST CONTROL CHARACTERISTICS 1442 75 100 125 150 Main contrast: Max FFH Main contrast: Max Sub contrast : Max MITSUBISHI ICs (Monitor) M52742SP Sub contrast: Max 0 00H MAIN CONTRAST CONTROL DATA BRIGHTNESS CONTROL CHARACTERISTICS BRIGHTNESS CONTROL VOLTAGE (V OSD ADJUST CONTROL CHARACTERISTICS ...

Page 16

... BUS CONTROLLED 3-CHANNEL VIDEO PREAMP FOR CRT DISPLAY MONITOR SYNC ON GREEN INPUT MIN. PULSE WIDTH 12 (Video duty=75 Sync separate normal operating range 100k INPUT SYNC AMPLITUDE (V IN UNIFORMITY CHARACTERISTICS 0.5 0 0.5 ) INPUT AMPLITUDE (V P-P MITSUBISHI ICs (Monitor) M52742SP 1.0 1.5 2.0 2.5 ) P-P 16 ...

Page 17

... M52742SP 0.01 100k 1 47 0.01 3.3 3 TTL 5V TTL INPUT S G INPUT ON (G) INPUT (B) MITSUBISHI ICs (Monitor) M52742SP Cut Off Adj DAC OUT 4 5V TTL 0.01 0.01 0.01 0. 0. TTL 47 0.01 FEED BACK IS INTERNAL FEED BACK Units Resistance : BLK IN (for retrace) ...

Page 18

... 0.8mA 2k 2.5 2 0.3mA 0.5mA GND 1k 3.2V MITSUBISHI ICs (Monitor) M52742SP Description of function Input pulses Connected to GND if not 2.7V used. 2k Clamped to about 2.5V due to clamp pulses from pin 19. Input at low impedance. 2.5V CP Apply equivalent voltage to 3 channels. Input pulses Connected to GND if not used ...

Page 19

... Peripheral circuit of pins 1.2k 0.5mA 5.75 7.25V 16 5 41k 19 2.2V 50k 20 2k MITSUBISHI ICs (Monitor) M52742SP Description of function 2.5V ABL (Automatic Beam 20k Limitter) input pin. Recommended voltage range 5V. 30k 1.2k When ABL function is not used, set to 5V. 15 Uniformity input pin. ...

Page 20

... OUTPUT (B) 32 OUTPUT (G) 35 OUTPUT ( CC2 Peripheral circuit of pins 50k 21 2k 50k 27 Variable Variable 12 Impressed MITSUBISHI ICs (Monitor) M52742SP Description of function SDA BUS (Serial data line) V =2. D/A output pin. Output voltage range 5V, Max output 23 current is 0.4mA. Input pulses 2.25V Connected to GND if not used ...

Page 21

... DESCRIPTION OF PIN (cont.) Pin No. Name Main 30 Brightness APPLICATION METHOD FOR M52742SP CLAMP PULSE INPUT Clamp pulse width is recommended above 15kHz, 1.0 sec above 30kHz, 0.5 sec above 64kHz, 0.3 sec. The clamp pulse circuit in ordinary set is a long round about way, and beside high voltage, sometimes connected to external terminal very easy affected by large surge ...

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