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MITSUBISHI ICs (Monitor)
M52737SP
3-CHANNEL VIDEO PREAMPLIFIER WITH OSD MIXING, RETRACE BLANKING
1
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
Frequency band width: RGB................................150MHz (3V
OSD..............................................50MHz
Input
:RGB.............................................................0.7V
OSD...............................................3.0V
BLK (for OSD)...............................3.0V
Retrace BLK..................................3.0V
Output :RGB...........................................................4.5V
OSD...........................................................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.
P-P
)
P-P
(typ.)
P-P
P-P
P-P
min. (positive)
min. (positive)
min. (positive)
P-P
P-P
(max.)
(max.)
APPLICATION
Display monitor
RECOMMENDED OPERATING CONDITION
Supply voltage range....................................................11.5 to 12.5V
Rated supply voltage................................................................12.0V
PIN CONFIGURATION (TOP VIEW)
Outline 36P4E
36
33
34
35
1
4
3
2
32
5
31
6
28
9
27
10
26
11
25
12
13
14
24
23
7
8
30
29
15
22
16
21
17
20
18
19
OUTPUT (G)
V
CC2
(B)
HOLD (B)
OUTPUT (R)
OUTPUT (B)
GND2 (B)
V
CC2
(G)
INPUT (B)
V
CC1
(G)
SUB CONTRAST (B)
GND1 (G)
GND1 (B)
V
CC1
(B)
V
CC1
(R)
SUB CONTRAST (G)
BLK IN (FOR OSD)
OSD ADJUST
GND2 (G)
INPUT (G)
HOLD (G)
NC
GND2 (R)
HOLD (R)
GND1 (R)
MAIN CONTRAST
SUB CONTRAST (R)
INPUT (R)
V
CC2
(R)
M
CP IN
BRIGHTNESS
NC : NO CONNECTION
OSD IN (B)
OSD IN (G)
OSD IN (R)
BLK IN (FOR RETRACE)
NC
NC
BLOCK DIAGRAM
B
Hold
B OSD
Blanking
B
Contrast
G
G
G OSD
Blanking
G
R OSD
Blanking
B
AMP
B
Clamp
G
G
R
B
Brightness
Hold
Contrast
AMP
Clamp
Brightness
HR
CoR
AMP
ClR
BrigR
B
OSD Mix
G
R
OSD Mix
OSD Mix
3
5
4
6
7
11
10
12
14
13
8
9
2
1
15
16
18
17
34
32
33
31
30
26
27
25
23
24
29
28
35
22
21
19
20
36
OUTPUT (G)
V
CC2
(B)
HOLD (B)
OUTPUT (R)
OUTPUT (B)
GND2 (B)
V
CC2
(G)
INPUT (B)
V
CC1
(G)
SUB
GND1 (G)
GND1 (B)
V
CC1
(B)
V
CC1
(R)
SUB
BLK IN
(FOR OSD)
OSD ADJUST
GND2 (G)
INPUT (G)
HOLD (G)
NC GND2 (R)
HOLD (R)
GND1 (R)
MAIN
SUB
INPUT (R)
V
CC2
(R)
CP IN
BRIGHTNESS
OSD IN
(B)
OSD IN (G)
OSD IN (R)
BLK IN (FOR RETRACE)
NC
NC
CONTRAST(B)
CONTRAST(G)
CONTRAST(R)
CONTRAST
B-ch
BLK
G-ch
BLK
R-ch
BLK