M52737SP Datasheet, PDF (1/15 Pages) Mitsubishi Electric Semiconductor – 3-CHANNEL VIDEO PREAMPLIFIER WITH OSD MIXING, RETRACE BLANKING

MITSUBISHI ICs (Monitor)
M52737SP
3-CHANNEL 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 amplification,
contrast control (main and sub), and brightness control.
FEATURES
• Frequency band width: RGB................................150MHz (3VP-P)
OSD..............................................50MHz
Input :RGB.............................................................0.7VP-P (typ.)
OSD...............................................3.0VP-P min. (positive)
BLK (for OSD)...............................3.0VP-P min. (positive)
Retrace BLK..................................3.0VP-P min. (positive)
Output :RGB...........................................................4.5VP-P (max.)
OSD...........................................................4.5VP-P (max.)
• 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.
APPLICATION
Display monitor
RECOMMENDED OPERATING CONDITION
Supply voltage range....................................................11.5 to 12.5V
Rated supply voltage................................................................12.0V
PIN CONFIGURATION (TOP VIEW)
BLK IN (FOR OSD) 1
VCC1 (B) 2
INPUT (B) 3
SUB CONTRAST (B) 4
OSD IN (B) 5
GND1 (B) 6
VCC1 (G) 7
INPUT (G) 8
SUB CONTRAST (G) 9
OSD IN (G) 10
GND1 (G) 11
VCC1 (R) 12
INPUT (R) 13
SUB CONTRAST (R) 14
OSD IN (R) 15
GND1 (R) 16
MAIN CONTRAST 17
CP IN 18
36 OSD ADJUST
35 OUTPUT (B)
34 VCC2 (B)
33 HOLD (B)
32 NC
31 GND2 (B)
30 OUTPUT (G)
29 VCC2 (G)
28 HOLD (G)
27 NC
26 GND2 (G)
25 OUTPUT (R)
24 VCC2 (R)
23 HOLD (R)
22 NC
21 GND2 (R)
20 BLK IN (FOR RETRACE)
19 BRIGHTNESS
Outline 36P4E
NC : NO CONNECTION
BLOCK DIAGRAM
OUTPUT (B) HOLD (B) GND2 (B)
VCC2 (G)
NC
OUTPUT (R) HOLD (R) BLK IN (FOR RETRACE)
OSD ADJUST VCC2 (B)
NC
OUTPUT (G) HOLD (G) GND2 (G)
VCC2 (R)
NC GND2 (R) BRIGHTNESS
36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19
B-ch
BLK
B
Brightness
G-ch
BLK
G
Brightness
R-ch
BLK
R
Brightness
B
AMP
B
OSD Mix
B
Hold
B OSD
Blanking
G
AMP
G
OSD Mix
G
Hold
G OSD
Blanking
R
AMP
R
OSD Mix
R
Hold
R OSD
Blanking
B
Clamp
B
Contrast
G
Clamp
G
Contrast
R
Clamp
R
Contrast
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15 16 17 18
BLK IN
INPUT (B) OSD IN
VCC1 (G)
SUB
GND1 (G) INPUT (R) OSD IN (R)
MAIN
(FOR OSD)
SUB ^(B)
CONTRAST(G)
SUB
CONTRAST
VCC1 (B) CONTRAST(B) GND1 (B) INPUT (G)
OSD IN (G) VCC1 (R) CONTRAST(R) GND1 (R)
CP IN
1