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PDF M52737SP Data sheet ( Hoja de datos )
| Número de pieza | M52737SP | |
| Descripción | 3-CHANNEL VIDEO PREAMPLIFIER WITH OSD MIXING/ RETRACE BLANKING | |
| Fabricantes | Mitsubishi | |
| Logotipo |  |
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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
1 page  
MITSUBISHI ICs (Monitor)
M52737SP
3-CHANNEL VIDEO PREAMPLIFIER WITH OSD MIXING, RETRACE BLANKING
Vimax Maximum input
Voltage V17 is changed to 2.5V, and increase the input signal
amplitude gradually, starting from 700mVP-P.
Measure the amplitude when the output signal starts becoming
distorted.
Gv Maximum gain
∆Gv Relative maximum gain
1. Input SG5 to pin 13 (8 or 3), and read the amplitude at output
T.P25 (30 or 35). The amplitude is called VOR1 (VOG1 or VOB1) .
2. Maximum gain GV is calculated by the equation below:
VOR1 (VOG1, VOB1) [VP-P]
GV=20LOG
0.7
[VP-P]
3. Relative maximum gain ∆G is calculated by the equation below:
∆GV=VOR1/VOG1, VOG1/VOB1, VOB1/VOR1
VCR1 Contrast control characteristics (typical)
∆VCR1 Contrast control relative characteristics (typical)
1. Measuring conditions are as given in Supplementary Table.
The setting of V17 is changed to 4V.
2. Measure the amplitude output at T.P25 (30 or 35). The measured
value is called VOR2 (VOG2 or VOB2).
3. Contrast control characteristics VCR1 and relative characteristics
∆VCR1 are calculated, respectively, by the equations below:
VOR2 (VOG2, VOB2) [VP-P]
VCR1=20LOG 0.7 [VP-P]
∆VCR1=VOR2/VOG2, VOG2/VOB2, VOB2/VOR2
VCR2 Contrast control characteristics (minimum)
∆VCR2 Contrast control relative characteristics (minimum)
1. Set V17 to 1.0V. Other conditions are as given in Supplementary
Table.
2. Measure the amplitude output at T.P25 (30or 35). The measured
value is called VOR3 (VOG3 or VOB3), and is treated as VCR2.
3. Contrast control relative characteristics ∆VCR2 are calculated by
the equation below:
∆VOR2=VOR3/VOG3, VOG3/VOB3, VOB3/VOR3
VSCR1 Sub contrast control characteristics (typical)
∆VSCR1 Sub contrast control relative characteristics (typical)
1. Set V4, V9 and V14 to 4.0V. Other conditions are as given in
Supplementary Table.
2. Measure the amplitude output at T.P25 (30 or 35). The measured
value is called VOR4 (VOG4 or VOB4).
3. Sub contrast control characteristics VSCR1 and relative
characteristics ∆VSCR1 are calculated, respectively, by the
equations below:
VOR4 (VOG4, VOB4) [VP-P]
VSCR1=20LOG
0.7
[VP-P]
∆VSCR1=VOR4/VOG4, VOG4/VOB4, VOB4/VOR4
VSCR2 Sub contrast control characteristics (minimum)
∆VSCR2 Sub contrast control relative characteristics (minimum)
1. Set V4, V9 and V14 to 1.0V. Other conditions are as given in
Supplementary Table.
2. Measure the amplitude output at T.P25 (30 or 35). The measured
value is called VOR5 (VOG5 or VOB5), and is treated as VSCR2.
3. Relative characteristics ∆VSCR2 are calculated by the equation
below:
∆VSCR2=VOR5/VOG5, VOG5/VOB5, VOB5/VOR5
VSCR3 Contrast/sub contrast control characteristics (typical)
∆VSCR3 Contrast/sub contrast control relative
characteristics (typical)
1. Set V4, V9, V14 and V17 to 3.0V. Other conditions are as given
in Supplementary Table.
2. Measure the amplitude at T.P25 (30 or 35). The measured value
is called VOR6 (VOG6 or VOB6). and is treated as VSCR3.
3. Relative sub contrast control characteristics ∆VSCR3 is
∆VSCR3=VOR6/VOG6, VOG6/VOB6, VOB6/VOR6
VB1 Brightness control characteristics (maximum)
∆VB1 Brightness control relative characteristics (maximum)
1. Measuring conditions are as given in Supplementary Table.
2. Measure the output at T.P25 (30 or 35) with a voltmeter.
The measured value is called VOR7 (VOG7 or VOB7), and is treated
as VB1.
3. To obtain brightness control relative characteristics, calculate the
difference in the output between the channels, using VOR7, VOG7
and VOB7.
∆VB1 =VOR7-VOG7
=VOG7-VOB7
=VOB7-VOR7
[V]
VB2 Brightness control characteristics (typical)
∆VB2 Brightness control relative characteristics (typical)
1. Measuring conditions are as given in Supplementary Table.
2. Measure the output at T.P25 (30 or 35) with a voltmeter.
The measured value is called VOR7' (VOG7' or VOB7'), and is
treated as VB2.
3. To obtain brightness control relative characteristics (∆VB2),
calculate the difference in the output between the channels,
using VOR7', VOG7', and VOB7'.
∆VB2 =VOR7'-VOG7'
=VOG7'-VOB7'
=VOB7'-VOR7'
[V]
5
5 Page 
MITSUBISHI ICs (Monitor)
M52737SP
3-CHANNEL VIDEO PREAMPLIFIER WITH OSD MIXING, RETRACE BLANKING
TEST CIRCUIT
SG7
V36 560
2.2µ
560
2.2µ
560
2.2µ
ab
SW20
V19
36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19
VCC
NC GND
VCC
NC GND
VCC
NC GND
M52737SP
VCC
GND VCC
GND VCC
GND
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
SW1
ab
SG6
47µ 0.01µ V4
SW3
b
a
SW5
a
b
47µ 0.01µ
V9
SW8
b
SW10
a ab
47µ 0.01µ
V14
SW13
SW15
ba
ab
V17
SW18
a
b
c
A 100µ
ab
0.01µ
SWA
12V
SGA
SG1
SG2
SG3
SG5
SG6
SG4
Units Resistance : Ω
Capacitance : F
TYPICAL CHARACTERISTICS
THERMAL DERATING (MAXIMUM RATING)
2800
2403
2400
2000
1600
1200
800
400
-20 0 25 50 75 85 100 125 150
AMBIENT TEMPERATURE Ta (°C)
11
11 Page | ||
| Páginas | Total 15 Páginas | |
| PDF Descargar | [ Datasheet M52737SP.PDF ] | |
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