M52742ASP MITSUBISHI, M52742ASP Datasheet

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M52742ASP

Manufacturer Part Number
M52742ASP
Description
Bus controlled 3-channel video preamp for CRT display monitor
Manufacturer
MITSUBISHI
Datasheet

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M52742ASP
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MITSUBISHI
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M52742ASP
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DESCRIPTION
M52742ASP is semiconductor integrated circuit for CRT display
monitor.
It includes OSD blanking, OSD mixing, retrace blanking, wide band
amplifer, brightness control, uniformity function.
Main/sub contrast and OSD adjust function can be controlled by I
bus.
FEATURES
STRUCTURE
Bipolar silicon monolithic 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
: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 5.5V (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)
GND 1(B)
INPUT(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)
M52742ASP
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
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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M52742ASP Summary of contents

Page 1

... BUS CONTROLLED 3-CHANNEL VIDEO PREAMP FOR CRT DISPLAY MONITOR DESCRIPTION M52742ASP is semiconductor integrated circuit for CRT display monitor. It includes OSD blanking, OSD mixing, retrace blanking, wide band amplifer, brightness control, uniformity function. Main/sub contrast and OSD adjust function can be controlled by I bus. ...

Page 2

... BUS CONTROLLED 3-CHANNEL VIDEO PREAMP FOR CRT DISPLAY MONITOR BLOCK DIAGRAM MITSUBISHI ICs (Monitor) M52742ASP 2 ...

Page 3

... FFH SG5 255 - - - - - - - - - 2.0 5.0 FFH SG5 255 - - - - - - - - - MITSUBISHI ICs (Monitor) M52742ASP Unit ° C ° 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. ...

Page 4

... Vari 5.0 5V able a Vari 5.0 able 5V MITSUBISHI ICs (Monitor) M52742ASP 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 ...

Page 5

... SG4 2.0 5.0 SG4 2.0 5.0 SG4 MITSUBISHI ICs (Monitor) M52742ASP 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

... C2 Measuring condition and procedure are the same as described ∆V Main contrast control relative characteristics2 C2 Measuring condition and procedure are the same as described in ∆ MITSUBISHI ICs (Monitor) M52742ASP 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 ∆V Brightness control relative characteristics3 B3 Measuring condition and procedure are the same as described in ∆ MITSUBISHI ICs (Monitor) M52742ASP ∆ABL1= VOUT (29)/VOUT (32), VOUT (32)/VOUT (35), VOUT (35)/VOUT (29) is calculated by the difference in the B1 ∆V = VOUT (29) -VOUT (32), B1 VOUT (32) -VOUT (35), VOUT (35) -VOUT (29) . ...

Page 8

... Measure the time needed for the input pulse to 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) M52742ASP VOUT (29, 32) C.T.2=20 log (dB) VOUT (35) VOUT (29, 32) C ...

Page 9

... VthRET Retrace BLK input threshold voltage 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) M52742ASP ...

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. Pedestal voltage (50%) moduration ratio UNI (UNI2) is calculated by the equation below; TDS-R OUT SG6 MITSUBISHI ICs (Monitor) M52742ASP IA UNI1 (UNI2)=100 • (VuniB/VuniA-1) (%) VuniB VuniA Pedestal voltage 5V (2 ...

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) M52742ASP =88H DATA BYTE A P STOP condition A05 A04 A03 A02 A15 A14 A13 A12 A25 A24 A23 A22 ...

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) M52742ASP 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 - µs - µ ...

Page 13

... BLK pulse 5µs 13 Signals (f=30kHz). Video width of 25µs. (75%) P-P 33µs 3µs 0.5µs 5V TTL 5µs MITSUBISHI ICs (Monitor) M52742ASP 0.7V P-P 0.7V P-P (Amplitude is variable.) Sine wave amplitude of 0.7V . P-P f=1MHz, 50MHz, 200MHz (variable) all white or all black 0.7V P-P variable. Sync’ ...

Page 14

... M52742ASP G SonG 12V osd gnd ( 0.01µ 3.3µ 3.3µ 1µ SW6 SW7 SW9 SW11 SG4 MITSUBISHI ICs (Monitor) M52742ASP 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 ...

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) M52742ASP 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 INPUT SYNC AMPLITUDE (V IN UNIFORMITY CHARACTERISTICS 0.5 0 0.5 ) INPUT AMPLITUDE (V P-P MITSUBISHI ICs (Monitor) M52742ASP 1.0 1.5 2.0 2.5 ) P-P 16 ...

Page 17

... TTL 5V TTL * INPUT S G INPUT ON (G) INPUT (B) MITSUBISHI ICs (Monitor) M52742ASP Cut Off Adj DAC OUTx4 5V TTL 0.01µ 0.01µ 0.01µ 0.01µ 0.01µ 33µ 47µ 1k 0.01µ ...

Page 18

... 0.37mA 2k 2.5 0.3mA 0.5mA GND 7 0.22mA 0.15mA MITSUBISHI ICs (Monitor) M52742ASP Description of function •Input pulses •Connected to GND if not 2.7V used. 0.37mA 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

... MITSUBISHI ICs (Monitor) M52742ASP Description of function 2.5V •ABL (Automatic Beam 20k Limiter) input pin. Recommended voltage range 5V. 30k 1.2k When ABL function is not used, set to 5V. 15 •Uniformity input pin. 200 Recommended amplitude range ...

Page 20

... V CC2 Peripheral circuit of pins 50k - 50k - 27 35k Variable Variable 12 MITSUBISHI ICs (Monitor) M52742ASP Description of function •SDA BUS (Serial data line) V =2. •D/A output pin. Output voltage range 5V, Min input current is 0.18mA when output pin is 1V. Max output current is 1.0mA. •Input pulses ...

Page 21

... IC output signal is 2V. 19 Power Amp R Feed back Black level MITSUBISHI ICs (Monitor) M52742ASP Description of function 35k •It is recommended that the IC be used between pedestal voltage 2V and 3V. 30 ...

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