DESCRIPTION
The M52738P is semiconductor integrated circuit for CRT display
monitor.
It includes OSD blanking function, OSD mixing, Wide-band
amplifier, Main and sub contrast controls, Brightness control
function.
FEATURES
•
•
STRUCTURE
Bipolar silicon monolithic IC
APPLICATION
CRT display monitor
RECOMMENDED OPERATING CONDITION
Supply voltage range....................................................11.4 to 12.6V
Rated supply voltage................................................................12.0V
1
BLOCK DIAGRAM
Frequency Band Width : RGB............................130MHz (at -3dB)
Input
Output :RGB...............................................................4V
Contrast and brightness can be controlled with a main control.
The Main control changes contrast or brightness of 3-channels
simultaneously. The sub control changes contrast of each
channel independently.
PRELIMINARY
Notice:This is not a final specification.
Some parametric limits are subject to change.
:RGB.............................................................0.7V
CONTRAST (R)
OSD.......................................1.6V
OSD BLK...............................1.6V
Retrace BLK........................1.2V
OSD...............................................................4V
OSD IN (R)
SUB
28
1
CONTRAST (G)
OSD IN (G)
SUB
27
2
CONTRAST (B)
OSD.............................................80MHz
OSD IN (B)
3-CHANNEL VIDEO PREAMPLIFIER WITH OSD MIXING, RETRACE BLANKING
SUB
26
3
CONTRAST
CONTRAST
BRIGHTNESS
OSD MIX
OSD BLK IN
R AMP
R SUB
R
R
25
4
P-P
P-P
P-P
INPUT (R)
HOLD (R)
maximum (negative)
minimum (positive)
minimum (positive)
24
5
OUTPUT (R)
V
23
CC1
6
P-P
P-P
P-P
(min.)
(min.)
(typ.)
V
GND
22
CONTRAST
CONTRAST
CC2
7
OSD MIX
G AMP
G SUB
INPUT (G)
G
G
GND
21
8
PIN CONFIGURATION (TOP VIEW)
OUTPUT (G)
V
20
MAIN CONTRAST
CC1
9
HOLD (G)
OSD BLK IN
OSD IN (G)
OSD IN (R)
OSD IN (B)
GND
INPUT (G)
INPUT (R)
INPUT (B)
OSD ADJ
19
10
OUTPUT (B)
CONTRAST
CONTRAST
GND
GND
V
V
V
INPUT (B)
OSD MIX
CC1
CC1
REF
B AMP
B SUB
18
11
B
B
10
11
12
13
14
1
2
3
4
5
6
7
8
9
Outline 28P4
MITSUBISHI ICs (Monitor)
HOLD (B)
V
12
17
REF
MAIN CONTRAST
BLK IN
13
16
28
27
26
25
24
23
22
21
20
19
18
17
16
15
M52738P
SUB CONTRAST (R)
SUB CONTRAST (G)
SUB CONTRAST (B)
BRIGHTNESS
HOLD (R)
OUTPUT (R)
V
GND
OUTPUT (G)
HOLD (G)
OUTPUT (B)
HOLD (B)
BLK IN
CP IN
OSD ADJ
CC2
CP IN
14
15