m52737sp Mitsumi Electronics, Corp., m52737sp Datasheet

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m52737sp

Manufacturer Part Number
m52737sp
Description
3-channel Video Preamplifier With Osd Mixing, Retrace Blanking
Manufacturer
Mitsumi Electronics, Corp.
Datasheet

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DESCRIPTION
The M52737SP is a semiconductor integrated circuit amplifies
video signals, having a 3-channel amplifier with a band width of
150MHz. The circuit also features the OSD mixing function.
The circuit is most useful with high-resolution displays that have
OSD, and its function are available for each channel, including OSD
blanking, OSD mixing, retrace blanking, wide-band amplification,
contrast control (main and sub), and brightness control.
FEATURES
APPLICATION
Display monitor
RECOMMENDED OPERATING CONDITION
Supply voltage range....................................................11.5 to 12.5V
Rated supply voltage................................................................12.0V
1
BLOCK DIAGRAM
Frequency band width: RGB................................150MHz (3V
Input
Output :RGB...........................................................4.5V
To adjust contrast and OSD Adj, for each, two types of controls
are provided, main and sub. With the main control, the contrast or
OSD Adj of the 3-channels can be changed simultaneously. Sub
controls are used to adjust the contrast of a given channel
individually. The control terminals can be controlled by applying a
voltage of 0 to 5V.
The DC power remains stable at the IC output terminal because
a feedback circuit is built in.
OSD ADJUST
(FOR OSD)
BLK IN
:RGB.............................................................0.7V
OSD...............................................3.0V
BLK (for OSD)...............................3.0V
Retrace BLK..................................3.0V
OSD...........................................................4.5V
36
1
OUTPUT (B)
V
CC1
35
OSD Mix
2
(B)
AMP
Clamp
B-ch
BLK
INPUT (B)
B
B
V
B
CC2
34
3
CONTRAST(B)
OSD..............................................50MHz
(B)
HOLD (B)
SUB
3-CHANNEL VIDEO PREAMPLIFIER WITH OSD MIXING, RETRACE BLANKING
33
4
Brightness
Blanking
Contrast
B OSD
OSD IN
Hold
B
B
B
NC
(B)
32
5
GND1 (B)
GND2 (B)
31
6
OUTPUT (G)
V
P-P
P-P
P-P
CC1
30
OSD Mix
7
min. (positive)
min. (positive)
min. (positive)
(G)
INPUT (G)
G-ch
AMP
Clamp
BLK
G
G
G
V
P-P
P-P
CC2
P-P
29
8
CONTRAST(G)
(max.)
(max.)
(G)
(typ.)
HOLD (G)
P-P
SUB
28
9
)
Brightness
Blanking
Contrast
OSD IN (G)
G OSD
Hold
G
G
G
NC
27
10
PIN CONFIGURATION (TOP VIEW)
GND2 (G)
GND1 (G)
SUB CONTRAST (G)
SUB CONTRAST (R)
SUB CONTRAST (B)
26
11
BLK IN (FOR OSD)
MAIN CONTRAST
OUTPUT (R)
V
CC1
12
25
OSD Mix
OSD IN (G)
OSD IN (R)
OSD IN (B)
INPUT (G)
INPUT (B)
INPUT (R)
(R)
GND1 (G)
GND1 (R)
GND1 (B)
AMP
Clamp
R-ch
BLK
INPUT (R)
V
V
V
R
R
R
CC1
CC1
V
CC1
CP IN
CC2
13
24
CONTRAST(R)
(G)
(B)
(R)
(R)
HOLD (R)
10
11
12
13
14
15
16
17
18
SUB
1
2
3
4
5
6
7
8
9
Outline 36P4E
14
23
MITSUBISHI ICs (Monitor)
Brightness
OSD IN (R)
Blanking
Contrast
R OSD
Hold
R
R
R
NC GND2 (R)
15
22
BLK IN (FOR RETRACE)
GND1 (R)
M52737SP
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
21
16
CONTRAST
OSD ADJUST
OUTPUT (B)
V
HOLD (B)
NC
GND2 (B)
OUTPUT (G)
V
HOLD (G)
NC
GND2 (G)
OUTPUT (R)
V
HOLD (R)
NC
GND2 (R)
BLK IN (FOR RETRACE)
BRIGHTNESS
NC : NO CONNECTION
CC2
CC2
CC2
MAIN
20
17
(B)
(G)
(R)
BRIGHTNESS
CP IN
19
18

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m52737sp Summary of contents

Page 1

... VIDEO PREAMPLIFIER WITH OSD MIXING, RETRACE BLANKING DESCRIPTION The M52737SP is a semiconductor integrated circuit amplifies video signals, having a 3-channel amplifier with a band width of 150MHz. The circuit also features the OSD mixing function. The circuit is most useful with high-resolution displays that have OSD, and its function are available for each channel, including OSD blanking, OSD mixing, retrace blanking, wide-band amplifi ...

Page 2

... SG4 Relative to measured values above SG5 SG5 SG5 SG4 Relative to measured values above SG4 Relative to measured values above MITSUBISHI ICs (Monitor) M52737SP Limits Unit SW1, Min. Typ. Max. 5, 10, SW20 115 6.2 7.7 9.2 V P-P a ...

Page 3

... SG4 SG5 SG5 SG5 SG4 SG5 SG5 SG5 SG4 SG5 SG5 SG5 SG4 MITSUBISHI ICs (Monitor) M52737SP Limits Unit SW1, Min. Typ. Max. 5, 10, SW20 1.2 1.8 2.4 V -0 0.3 0.7 1.1 V -0 2.5 ...

Page 4

... T.P25 (30 or 35) is distorted. The voltage is called V 3. Voltage V is calculated by the equation below: OMAX V =V OMAX OHR (V) 5.0 0 Waveform Output at T.P25 OLR OLG (Identical to output at T.P30 and T.P35.) MITSUBISHI ICs (Monitor) M52737SP Limits Unit SW1, Min. Typ. Max. 5, 10, SW20 -0 SW1...a a other ...

Page 5

... OR7' OG7 OR7' =V OG7' =V OB7 P P-P /V OR4 MITSUBISHI ICs (Monitor) M52737SP ( and is treated OR5 OG5 OB5 SCR2 are calculated by the equation SCR2 / OR5 OG5 OG5 OB5 OB5/ OR5 ...

Page 6

... Measure the time needed for the output pulse to rise from 10 P-P to 90% (Tr2) and to fall from 90% to 10% (Tf2) with an active [V ] P-P prove. are equal to the C1' 4. Pulse characteristics Tr and Tf are calculated by the equation below: Tr (nsec)= (Tr2) Tf (nsec)= (Tf2) . P-P MITSUBISHI ICs (Monitor) M52737SP , V and or V respectively P-P [dB ...

Page 7

... 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. ), and the OSD LBA - HGA LGA HBA LBA /V ORA MITSUBISHI ICs (Monitor) M52737SP ...

Page 8

... Pulses which are synchronous with standard video step waveform’s video portions: amplitude, 4.0V SG7 Retrace BLK signals Pulses which are synchronous with standard video step waveform’s video portions: amplitude, 4.0V Signals (f=1MHz) P-P (f=50MHz) P-P (f=150MHz) P-P 2.5V P-P 0.5 s (f=30kHz, amplitude sometimes variable) P MITSUBISHI ICs (Monitor) M52737SP 0.7V P-P 0.7V P-P 0 and pulse width P and pulse width P-P 8 ...

Page 9

... VIDEO PREAMPLIFIER WITH OSD MIXING, RETRACE BLANKING APLLICATION METHOD FOR M52737SP 1) CLAMP PULSE INPUT Input positive pulse. The calculating of clamp pulse threshold voltage is by the method as shown right. The voltage more than 2.2V is limited. Recommended clamp pulse voltage is as the Fig. shown right. ...

Page 10

... Make the terminals of OSD adjust open or GND, when OSD function is not used OSD adjust Voltage (V) Notice of application Make the nearest distance between output pin and pull down resister. Recommended pedestal voltage of IC output signal is 2V MITSUBISHI ICs (Monitor) M52737SP 10 ...

Page 11

... V NC GND CC M52737SP V GND 0.01 V9 SW10 SW8 100 125 150 MITSUBISHI ICs (Monitor) M52737SP SG7 a b 560 2.2 SW20 GND CC GND 0.01 V14 V17 SW18 SW13 SW15 a a ...

Page 12

... INPUT (B) (B) (for OSD) CRT 560 560 0.01 2 M52737SP 0.01 0.01 0.1 47 0.01 47 OSD IN INPUT INPUT (G) (G) (R) MITSUBISHI ICs (Monitor) M52737SP DC CLAMP BLK IN (for retrace) 2.2V 0.01 2.2 0 0.1 0 0.01 OSD IN CLAMP (R) Units Resistance : Capacitance : F 12 ...

Page 13

... OSD IN (R) 13 Peripheral circuit of pins B-ch G-ch 1 0.9mA 2.5 CP 0.24mA 1.5k 2.5 23.5k 1.1mA MITSUBISHI ICs (Monitor) M52737SP Description of function V CC Input pulses of minimum 3.5V. 3 maximum Connected to GND if not 2.5V used. GND Apply equivalent voltage to 3 channels Clamped to about 2.5V due to clamp pulses from pin 18. ...

Page 14

... Brightness BLK IN 20 (for retrace) Peripheral circuit of pins GND 11k 2.5 41k 17 41k 18 B-ch G-ch 19 B-ch G-ch 20 0.25mA MITSUBISHI ICs (Monitor) M52737SP Description of function V CC Use at maximum 5V for 2.5V stable operation. GND V CC Input pulses of minimum 2.5V. 2.5V minimum 0.5V maximum 2.2V Input at low impedance. GND V CC 20.3k GND ...

Page 15

... V (B) CC2 25 OUTPUT (R) 30 OUTPUT (G) Variable 35 OUTPUT (B) 36 OSD adjust at open 5.5V 15 MITSUBISHI ICs (Monitor) M52737SP Peripheral circuit of pins Description of function capacity is needed on the GND side. 0.2mA GND Used to supply power to output emitter follower Pin 24 only. Pin 29 Pin 34 Apply equivalent voltage to 3 channels ...

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