M52737SP [MITSUBISHI]
3-CHANNEL VIDEO PREAMPLIFIER WITH OSD MIXING, RETRACE BLANKING; 3路视频前置放大器， OSD的混合，回扫消隐
| 型号： | M52737SP |
| 厂家： | 
Mitsubishi Group |
| 描述： | 3-CHANNEL VIDEO PREAMPLIFIER WITH OSD MIXING, RETRACE BLANKING |
| 文件： | 总15页 (文件大小：121K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MITSUBISHI ICs (Monitor)
M52737SP
3-CHANNEL VIDEO PREAMPLIFIER WITH OSD MIXING, RETRACE BLANKING
DESCRIPTION
PIN CONFIGURATION (TOP VIEW)
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.
BLK IN (FOR OSD)
VCC1 (B)
1
2
36 OSD ADJUST
OUTPUT (B)
VCC2 (B)
HOLD (B)
NC
35
34
33
32
INPUT (B)
3
SUB CONTRAST (B)
OSD IN (B)
4
5
GND1 (B)
6
31 GND2 (B)
FEATURES
VCC1 (G)
7
OUTPUT (G)
VCC2 (G)
HOLD (G)
NC
30
29
28
27
26
• Frequency band width: RGB................................150MHz (3VP-P)
INPUT (G)
8
OSD..............................................50MHz
SUB CONTRAST (G)
OSD IN (G)
9
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.)
10
11
12
13
14
15
16
17
18
GND2 (G)
GND1 (G)
25 OUTPUT (R)
VCC1 (R)
VCC2 (R)
24
INPUT (R)
• 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.
HOLD (R)
SUB CONTRAST (R)
OSD IN (R)
23
22
21
20
NC
GND2 (R)
GND1 (R)
BLK IN (FOR RETRACE)
MAIN CONTRAST
CP IN
• The DC power remains stable at the IC output terminal because
19 BRIGHTNESS
a feedback circuit is built in.
Outline 36P4E
APPLICATION
Display monitor
NC : NO CONNECTION
RECOMMENDED OPERATING CONDITION
Supply voltage range....................................................11.5 to 12.5V
Rated supply voltage................................................................12.0V
BLOCK DIAGRAM
OUTPUT (B)
HOLD (B)
33
GND2 (B)
OUTPUT (G)
31 30 29
VCC2 (G)
HOLD (G)
28
NC
27
OUTPUT (R)
HOLD (R)
BLK IN (FOR RETRACE)
OSD ADJUST
36 35
VCC2 (B)
34
NC
32
GND2 (G)
26
VCC2 (R)
24
NC GND2 (R)
21
BRIGHTNESS
19
20
25
23
22
B-ch
BLK
G-ch
BLK
R-ch
BLK
B
G
R
Brightness
Brightness
Brightness
B
AMP
B
Hold
G
AMP
G
Hold
R
R
AMP
Hold
B
B OSD
Blanking
G
G OSD
Blanking
R
R OSD
OSD Mix
Blanking
OSD Mix
OSD Mix
B
B
G
Clamp
G
R
R
Clamp
Contrast
Contrast
Clamp
Contrast
16
17
MAIN
18
1
2
3
4
5
6
7
8
9
10
11
12
13
INPUT (R)
14
15
BLK IN
(FOR OSD)
INPUT (B)
OSD IN
(B)
VCC1 (G)
SUB
CONTRAST(G)
INPUT (G)
GND1 (G)
OSD IN (R)
CONTRAST
GND1 (R) CP IN
SUB
SUB
CONTRAST(R)
VCC1 (B)
GND1 (B)
CONTRAST(B)
OSD IN (G)
VCC1 (R)
1
MITSUBISHI ICs (Monitor)
M52737SP
3-CHANNEL VIDEO PREAMPLIFIER WITH OSD MIXING, RETRACE BLANKING
ABSOLUTE MAXIMUM RATINGS (Ta=25°C)
Symbol
VCC
Parameter
Ratings
13.0
Unit
V
Supply voltage
Pd
Power dissipation
2403
mW
°C
°C
V
Topr
Ambient temperature
-20 to +85
-40 to +150
12.0
Tstg
Storage temperature
Vopr
Recommended supply voltage
Recommended supply voltage range
Electrostatic discharge
Vopr’
Surge
11.5 to 12.5
±200
V
V
ELECTRICAL CHARACTERISTICS (VCC=12V, Ta=25°C, unless otherwise noted)
Test conditions
Limits
External power supply (V)
Input
Pulse input
Test
point
(s)
Symbol
Parameter
Unit
SW1,
SW18 5, 10, SW20
15
SW8 SW3
G-ch B-ch
SW13
R-ch
V4 V17 V19 V36
Min.
72
Typ.
93
Max.
115
a
−
a
−
a
−
b
a
a
ICC
Circuit current
A
5
5
5
5
5
2
mA
SG4
−
−
T.P.35
T.P.30
T.P.25
b
b
b
b
a
a
Vari-
able
Vomax
Vimax
Output dynamic range
Maximum input
−
6.2
1
7.7
1.6
9.2
VP-P
SG5 SG5 SG5
SG4
−
−
T.P.35
T.P.30
T.P.25
b
b
b
b
a
a
5
5
2.5
5
2
2
−
−
−
VP-P
SG5 SG5 SG5
SG4
−
−
T.P.35
T.P.30
T.P.25
b
b
b
b
a
a
Gv
Maximum gain
16.4
0.8
17.8
1
19.4
1.2
dB
−
SG5 SG5 SG5
SG4
−
−
∆Gv
VCR1
Relative maximum gain
Relative to measured values above
T.P.35
T.P.30
T.P.25
Contrast control
characteristics (typical)
b
b
b
b
a
a
5
4
2
−
14.5
16.0
17.5
dB
SG5 SG5 SG5
SG4
−
−
Contrast control relative
characteristics (typical)
∆VCR1
Relative to measured values above
0.8
0.4
1
0.7
1
1.2
1.0
−
VP-P
−
Contrast control
characteristics
(minimum)
T.P.35
T.P.30
T.P.25
b
b
b
b
SG4
a
−
a
−
VCR2
5
1
2
−
SG5 SG5 SG5
Contrast control relative
characteristics (minimum)
∆VCR2
VSCR1
Relative to measured values above
0.8
1.2
T.P.35
T.P.30
T.P.25
b
b
b
b
SG4
a
−
a
−
Sub contrast control
characteristics (typical)
4
5
2
−
14.5
16.0
17.5
dB
SG5 SG5 SG5
Sub contrast control
relative characteristics
(typical)
∆VSCR1
Relative to measured values above
0.8
1
1.2
−
Sub contrast control
characteristics
(minimum)
T.P.35
T.P.30
T.P.25
b
b
b
b
SG4
a
−
a
−
VSCR2
∆VSCR2
VSCR3
1
5
2
−
0.5
0.8
1.1
0.9
1
1.3
1.2
2.5
VP-P
−
SG5 SG5 SG5
Sub contrast control relative
characteristics (minimum)
Relative to measured values above
T.P.35
T.P.30
T.P.25
Contrast/sub contrast
control characteristics
(typical)
b
b
b
b
SG4
a
−
a
−
3
3
2
−
1.8
VP-P
SG5 SG5 SG5
Contrast/sub contrast
control relative
characteristics (typical)
∆VSCR3
Relative to measured values above
0.8
1
1.2
−
Brightness control
characteristics
(maximum)
T.P.35
T.P.30
T.P.25
a
−
a
−
a
−
b
SG4
a
−
a
−
VB1
5
5
4
−
3.0
3.6
0
4.2
0.3
V
V
Brightness control relative
characteristics (maximum)
∆VB1
Relative to measured values above
-0.3
2
MITSUBISHI ICs (Monitor)
M52737SP
3-CHANNEL VIDEO PREAMPLIFIER WITH OSD MIXING, RETRACE BLANKING
ELECTRICAL CHARACTERISTICS (cont.)
Test conditions
Limits
Typ.
External power supply (V)
Input
Pulse input
SW1,
Test
point
(s)
Symbol
Parameter
Unit
SW8 SW3
G-ch B-ch
SW13
R-ch
SW18
SW20
5, 10,
15
V4 V17 V19 V36
Min.
Max.
T.P.35
T.P.30
T.P.25
Brightness control
characteristics (typical)
a
−
a
−
a
−
b
SG4
a
−
a
−
VB2
5
5
2
−
1.2
-0.3
0.3
-0.3
-2
1.8
0
2.4
0.3
1.1
0.3
2.5
V
V
Brightness control relative
characteristics (typical)
∆VB2
VB3
Relative to measured values above
Brightness control
characteristics
(minimum)
T.P.35
T.P.30
T.P.25
a
−
a
−
a
−
b
SG4
a
−
a
−
5
5
1
−
0.7
0
V
Brightness control relative
characteristics (minimum)
∆VB3
FC1
Relative to measured values above
V
T.P.35
T.P.30
T.P.25
Frequency
characteristics 1
(f=50MHz;maximum)
b
b
b
c
−
a
−
a
−
Vari-
able
5
−
−
0
dB
SG1 SG1 SG1
Frequency relative
characteristics 1
∆FC1
FC1’
Relative to measured values above
-1
-3
-1
-3
0
-2.0
0
1
3
1
3
−
dB
−
(f=50MHz;maximum)
Frequency
characteristics 1
(f=150MHz;maximum)
T.P.35
T.P.30
T.P.25
b
b
b
c
−
a
−
a
−
Vari-
able
5
−
−
SG2 SG2 SG2
Frequency relative
characteristics 1
(f=150MHz;maximum)
∆FC1’
FC2
Relative to measured values above
Frequency
characteristics 2
(f=150MHz; maximum)
T.P.35
T.P.30
T.P.25
b
b
b
c
−
a
−
a
−
Vari-
able
5
−
−
0
dB
SG2 SG2 SG2
Frequency relative
characteristics 2
(f=150MHz; maximum)
∆FC2
C.T.1
C.T.1’
C.T.2
C.T.2’
C.T.3
C.T.3’
Tr
Relative to measured values above
-1
−
0
-30
-20
-30
-20
-30
-20
2.5
2.5
1.5
0.5
0
1
-20
-15
-20
-15
-20
-15
−
−
T.P.35
T.P.30
T.P.25
b
SG1
a
−
a
c
a
−
a
−
Crosstalk 1 (f=50MHz)
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
dB
−
−
T.P.35
b
SG2
a
−
a
c
a
−
a
−
Crosstalk 1 (f=150MHz) T.P.30
T.P.25
−
dB
−
−
T.P.35
T.P.30
T.P.25
a
−
b
SG1
a
c
a
−
a
−
Crosstalk 2 (f=50MHz)
−
dB
−
−
T.P.35
a
−
b
SG2
a
c
a
−
a
−
Crosstalk 2 (f=150MHz) T.P.30
T.P.25
−
dB
−
−
T.P.35
T.P.30
T.P.25
a
−
a
−
b
c
a
−
a
−
Crosstalk 3 (f=50MHz)
−
dB
SG1
−
T.P.35
a
−
a
−
b
c
a
−
a
−
Crosstalk 3 (f=150MHz) T.P.30
T.P.25
−
dB
SG2
−
T.P.35
T.P.30
T.P.25
b
b
b
b
SG4
a
−
a
−
Vari- Vari-
able able
Pulse characteristics 1
Pulse characteristics 2
−
nsec
nsec
VDC
µsec
VDC
SG3 SG3 SG3
T.P.35
T.P.30
T.P.25
b
b
b
b
SG4
a
−
a
−
Vari- Vari-
able able
Tf
−
−
SG3 SG3 SG3
T.P.35
T.P.30
T.P.25
Clamp pulse threshold
voltage
b
b
b
b
SG4
a
−
a
−
V14th
W14
PDCH
5
5
5
2
2
2
1.0
0.2
-0.3
2.5
−
SG5 SG5 SG5
T.P.35
T.P.30
T.P.25
Clamp pulse minimum
width
b
b
b
b
SG4
a
−
a
−
SG5 SG5 SG5
T.P.35
T.P.30
T.P.25
Pedestal voltage
temperature
characteristics1
b
b
b
b
SG4
a
−
a
−
0.3
SG5 SG5 SG5
3
MITSUBISHI ICs (Monitor)
M52737SP
3-CHANNEL VIDEO PREAMPLIFIER WITH OSD MIXING, RETRACE BLANKING
ELECTRICAL CHARACTERISTICS (cont.)
Test conditions
Limits
Typ.
External power supply (V)
Input
Pulse input
SW1,
Test
point
(s)
Symbol
Parameter
Unit
SW8 SW3
G-ch B-ch
SW13
R-ch
SW18
SW20
5, 10,
15
V4 V17 V19 V36
Min.
-0.3
Max.
0.3
Pedestal voltage
temperature
characteristics2
T.P.35
T.P.30
T.P.25
b
b
b
b
a
a
PDCL
OTr
5
5
5
5
5
5
5
5
2
−
0
3.5
3.5
4.6
1
VDC
nsec
nsec
VP-P
−
SG5 SG5 SG5
SG4
−
−
T.P.35
T.P.30
T.P.25
SW1...a
other...b
OSD pulse
characteristics1
a
−
a
−
a
−
b
a
Vari- Vari-
able able
−
8
8
SG4
−
SG6
T.P.35
T.P.30
T.P.25
SW1...a
other...b
OSD pulse
characteristics2
a
−
a
−
a
−
b
a
Vari- Vari-
able able
OTf
−
SG4
−
SG6
OSD adjusting control
characteristics
(maximum)
T.P.35
T.P.30
T.P.25
a
−
a
−
a
−
b
b
a
Oaj1
∆Oaj1
Oaj2
∆Oaj2
OSDth
V1th
HBLK
HVth
2
4
3.9
0.8
−
5.3
1.2
0.5
1.2
3.5
3.5
0.5
2.5
SG4 SG6
−
OSD adjusting control
relative characteristics
(maximum)
Relative to measured values above
OSD adjusting control
characteristics
(minimum)
T.P.35
T.P.30
T.P.25
a
−
a
−
a
−
b
b
a
5
5
2
0
0
VP-P
−
SG4 SG6
−
OSD adjusting control
relative characteristics
(minimum)
Relative to measured values above
0.8
1.7
1.7
−
1
T.P.35
T.P.30
T.P.25
SW1...a
other...b
OSD input threshold
voltage
a
−
a
−
a
b
a
−
5
5
5
5
5
5
5
5
2
2
2
2
5
5
0
0
2.5
2.5
0.2
1.5
VDC
VDC
VDC
VDC
−
SG4
SG6
T.P.35
T.P.30
T.P.25
SW1...b
BLK input threshold
voltage
b
b
b
b
a
−
SG6
SG5 SG5 SG5
SG4
other...a
T.P.35
T.P.30
T.P.25
a
−
a
−
a
a
a
−
b
SG7
Retrace BLK voltage
−
−
T.P.35
T.P.30
T.P.25
a
−
a
−
a
a
a
−
b
SG7
Retrace BLK input
threshold voltage
0.5
−
−
ELECTRICAL CHARACTERISTICS TEST METHOD
1. Because a description of signal input pin and pulse input pin
switch numbers is already given in Supplementary Table, only
external power supply switch numbers are included in the notes
below.
2. Increase V19 gradually, and measure the voltage when the top
of the waveform output at T.P25 (30 or 35) is distorted. The
voltage is called VOHR (VOHG or VOHB).
3. Voltage VOMAX is calculated by the equation below:
VOMAX=VOHR (VOHG, VOHB)-VOLR (VOLG, VOLB)
Sub contrast voltages V4, V9 and V14 are always set to the same
voltage, therefore only V4 is referred to in Supplementary Table.
(V)
ICC Circuit current
Measuring conditions are as listed in Supplementary Table.
5.0
Measured with an ammeter At test point A when SWA is set to b.
Vomax Output dynamic range
Voltage V19 is varied as described below:
1. Decrease V19 gradually while inputting SG5 to pin 13 (8 or 3).
Measure the voltage when the bottom of the waveform output at
T.P25 (30 or 35) is distorted.The voltage is called VOLR (VOLG or
VOLB).
0.0
Waveform Output at T.P25
(Identical to output at T.P30 and T.P35.)
4
MITSUBISHI ICs (Monitor)
M52737SP
3-CHANNEL VIDEO PREAMPLIFIER WITH OSD MIXING, RETRACE BLANKING
Vimax Maximum input
VSCR2 Sub contrast control characteristics (minimum)
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.
∆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:
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:
∆VSCR2=VOR5/VOG5, VOG5/VOB5, VOB5/VOR5
VSCR3 Contrast/sub contrast control characteristics (typical)
∆VSCR3 Contrast/sub contrast control relative
[VP-P]
[VP-P]
VOR1 (VOG1, VOB1)
0.7
GV=20LOG
characteristics (typical)
1. Set V4, V9, V14 and V17 to 3.0V. Other conditions are as given
in Supplementary Table.
3. Relative maximum gain ∆G is calculated by the equation below:
∆GV=VOR1/VOG1, VOG1/VOB1, VOB1/VOR1
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
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.
VB1 Brightness control characteristics (maximum)
2. Measure the amplitude output at T.P25 (30 or 35).The measured
value is called VOR2 (VOG2 or VOB2).
∆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. Contrast control characteristics VCR1 and relative characteristics
∆VCR1 are calculated, respectively, by the equations below:
[VP-P]
[VP-P]
VOR2 (VOG2, VOB2)
0.7
VCR1=20LOG
3. To obtain brightness control relative characteristics, calculate the
difference in the output between the channels, using VOR7, VOG7
and VOB7.
∆VCR1=VOR2/VOG2, VOG2/VOB2, VOB2/VOR2
VCR2 Contrast control characteristics (minimum)
∆VCR2 Contrast control relative characteristics (minimum)
∆VB1 =VOR7-VOG7
=VOG7-VOB7
[V]
1. Set V17 to 1.0V. Other conditions are as given in Supplementary
Table.
=VOB7-VOR7
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:
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.
∆VOR2=VOR3/VOG3, VOG3/VOB3, VOB3/VOR3
VSCR1 Sub contrast control characteristics (typical)
∆VSCR1 Sub contrast control relative characteristics (typical)
3. To obtain brightness control relative characteristics (∆VB2),
calculate the difference in the output between the channels,
using VOR7', VOG7', and VOB7'.
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).
∆VB2 =VOR7'-VOG7'
=VOG7'-VOB7'
[V]
3. Sub contrast control characteristics VSCR1 and relative
characteristics ∆VSCR1 are calculated, respectively, by the
equations below:
=VOB7'-VOR7'
[VP-P]
[VP-P]
VOR4 (VOG4, VOB4)
0.7
VSCR1=20LOG
∆VSCR1=VOR4/VOG4, VOG4/VOB4, VOB4/VOR4
5
MITSUBISHI ICs (Monitor)
M52737SP
3-CHANNEL VIDEO PREAMPLIFIER WITH OSD MIXING, RETRACE BLANKING
VB3 Brightness control characteristics (minimum)
C.T.1 Crosstalk1 (f=50MHz)
C.T.1' Crosstalk1 (f=150MHz)
∆VB3 Brightness control relative characteristics (minimum)
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.
1. Measuring conditions are as given in Supplementary Table.
2. Input SG1 (or SG2) to pin 13 (R-ch) only, and then measure the
waveform amplitude output at T.P25 (30 or 35). The measured
value is called VOR, VOG and or VOB respectively.
3. To obtain brightness control relative characteristics (∆VB3),
calculate the difference in the output between the channels,
using VOR7", VOG7" and VOB7".
3. Crosstalk C.T.1 (C.T.1') is calculated by the equation below:
VOG or VOB
VOR
[VP-P]
[VP-P]
[dB]
C.T.1 =20LOG
(C.T.1')
∆VB3 =VOR7''-VOG7''
=VOG7''-VOB7''
[V]
C.T.2 Crosstalk2 (f=50MHz)
C.T.2' Crosstalk2 (f=150MHz)
=VOB7''-VOR7''
1. Change the input pin from pin 8 (G-ch), and measure the output
in the same way as in C.T.1, C.T.1'.
FC1 Frequency characteristics1 (f=50MHz; maximum)
2. Crosstalk C.T. 2 (C.T.2') is calculated by the equation below:
∆FC1 Frequency relative characteristics1
(f=50MHz; maximum)
VOR or VOB
VOG
[VP-P]
[VP-P]
[dB]
C.T.2 =20LOG
(C.T.2')
FC1' Frequency characteristics1 (f=150MHz; maximum)
∆FC1' Frequency relative characteristics1
(f=150MHz; maximum)
C.T.3 Crosstalk3 (f=50MHz)
C.T.3' Crosstalk3 (f=150MHz)
1. Measuring conditions are as given in Supplementary Table.
2. First, SGA is as input signal. Input a resister that is about 2KΩ to
offer the voltage at input pins (Pin 3, Pin 8, Pin 13) in order that
the bottom of input signal is 2.5V.
1. Change the input pin from pin 13 (R-ch) to pin 3 (B-ch), and
measure the output in the same way as in C.T.1, C.T.1'.
2. Crosstalk C.T. 3 (C.T.3') is calculated by the equation below:
Inputs the voltage at hold pins (Pin 23, Pin 28, Pin 33) in order
that the bottom of sine wave output is 2V.
VOR or VOG
VOB
[VP-P]
[VP-P]
[dB]
C.T.3 =20LOG
(C.T.3')
Control the MAIN CONTRAST (V17) in order that the amplitude
of sine wave output is 4.0VP-P.
By the same way, measure the output amplitude when SG1,
SG2 is as input signal.
Tr Pulse characteristics1
Tf Pulse characteristics2
3. Supposing that the measured value is treated as amplitude VOR8
(VOG8 or VOB8) when SG1 is input, or as VOR9 (VOG9 or VOB9)
when SG2 is input, frequency characteristics FC1 and FC1' are
calculated as follows:
1. Measuring conditions are as given in Supplementary Table.
Control the MAIN CONTRAST(V17) in order that the amplitude
of output signal is 4.0VP-P. Control the BRIGHTNESS(V19) in
order that the Black level of output signal is 2.0V.
2. Measure the time needed for the input pulse to rise from 10% to
90% (Tr1) and to fall from 90% to 10% (Tf1)with an active prove.
3. Measure the time needed for the output pulse to rise from 10%
to 90% (Tr2) and to fall from 90% to 10% (Tf2) with an active
prove.
VOR8 (VOG8, VOB8)
4.0
[VP-P]
[VP-P]
FC1=20LOG
VOR9 (VOG9, VOB9)
4.0
[VP-P]
[VP-P]
FC1'=20LOG
4. Frequency relative band widths ∆FC1 and ∆FC1' are equal to the
4. Pulse characteristics Tr and Tf are calculated by the equation
below:
difference in FC1 and FC1', respectively, between the channels.
2
2
Tr (nsec)= (Tr2) -(Tr1)
FC2 Frequency characteristics2 (f=150MHz; maximum)
2
2
Tf (nsec)= (Tf2) -(Tf1)
∆FC2' Frequency relative characteristics2
100%
90%
(f=150MHz; maximum)
Measuring conditions and procedure are the same as described in
FC1, ∆FC1, FC1', ∆FC1', except that Control the MAIN CONTRAST
(V17) in order that the amplitude of sine wave output is 1.0VP-P.
10%
0%
Tf1 or Tf2
Tr1 or Tr2
6
MITSUBISHI ICs (Monitor)
M52737SP
3-CHANNEL VIDEO PREAMPLIFIER WITH OSD MIXING, RETRACE BLANKING
V14th Clamp pulse threshold voltage
Oaj2 OSD adjusting control characteristics (minimum)
∆Oaj2 OSD adjusting control relative characteristics
(minimum)
1. Measuring conditions are as given in Supplementary Table.
2. Turn down the SG4 input level gradually, monitoring the output
(about 1.8 VDC). Measure the top level of input pulse when the
output pedestal voltage turn decrease with unstable.
Measuring conditions and procedure are the same as described in
Note 23, except that V36 is set to 0V.
OSDth OSD input threshold voltage
W14 Clamp pulse minimum width
1. Measuring conditions are as given in Supplementary Table.
Decrease the SG4 pulse width gradually, monitoring the output.
Measure the SG4 pulse width (a point of 1.5V) when the output
pedestal voltage turn decrease with unstable.
2. Reduce the SG6 input level gradually, monitoring output.
Measure the SG6 level when the output reaches 0V.
The measured value is called OSDth.
PDCH Pedestal voltage temperature characteristics1
V1th BLK input threshold voltage
PDCL Pedestal voltage temperature characteristics2
1. Measuring conditions are as given in Supplementary Table.
2. Make sure that signals are not being output synchronously with
SG6 (blanking period).
1. Measuring conditions are as given in Supplementary Table.
2. Measure the pedestal voltage at room temperature.
The measured value is called PDC1.
3. Measure the pedestal voltage at temperatures of -20°C and
85°C. The measured value is called, respectively, PDC2 and
PDC3.
3. Reduce the SG6 input level gradually, monitoring output.
Measure the SG6 level when the blanking period disappears.
The measured value is called V1th.
4. PDCH=PDC1 - PDC2
HBLK Retrace BLK voltage
PDCL=PDC1 - PDC3
1. Measuring conditions are as given in Supplementary Table.
2. Monitoring to output at that time, read the level of retrace
blanking.
OTr OSD pulse characteristics1
OTf OSD pulse characteristics2
1. Measuring conditions are as given in Supplementary Table.
Control the MAIN OSD ADJUST(V36) in order that the amplitude
of output signal is 3.0VP-P. Control the BRIGHTNESS(V19) in
order that the Black level of output signal is 2.0V.
2. Measure the time needed for the input pulse to rise from 10% to
90% (OTr1) and to fall from 90% to 10% (OTf1) with an active
prove.
HVth Retrace BLK input threshold voltage
1. Measuring conditions are as given in Supplementary Table.
2. 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.
3. Measure the time needed for the output pulse to rise from 10% to
90% (OTr2) and to fall from 90% to 10% (OTf2) with an active
prove.
4. Pulse characteristics Tr and Tf are calculated by the equations
below :
2
2
OTr (nsec)= (OTr2) -(OTr1)
2
2
OTf (nsec)= (OTf2) -(OTf1)
Oaj1 OSD adjusting control characteristics (maximum)
∆Oaj1 OSD adjusting control relative characteristics
(maximum)
1. Measuring conditions are as given in Supplementary Table.
2. Measure the output at T.P25 (30 or 35).
The pedestal level is called VLRA (VLGA or VLBA), and the OSD
level is called VHRA (VHGA or VHBA).
3. VLRA (VLGA or VLBA) is treated as Oaj1.
Oaj1=VORA (VOGA, VOBA) = VHRA-VLRA, (VHGA-VLGA, VHBA-VLBA)
4. OSD adjusting control relative characteristics ∆Oaj1 are
calculated by the equation below:
∆Oaj1=VORA/VOGA, VOGA/VOBA, VOBA/VORA
7
MITSUBISHI ICs (Monitor)
M52737SP
3-CHANNEL VIDEO PREAMPLIFIER WITH OSD MIXING, RETRACE BLANKING
INPUT SIGNAL
SG No.
Signals
Sine wave with amplitude of 0.7VP-P (f=1MHz)
SGA
0.7VP-P
SG1
SG2
Sine wave with amplitude of 0.7VP-P (f=50MHz)
Sine wave with amplitude of 0.7VP-P (f=150MHz)
Pulse with amplitude of 0.7VP-P (f=1MHz, duty=50%)
Pulses which are synchronous with SG4 pedestal portion
SG3
0.7VP-P
Pulses which are synchronous with standard video step waveform pedestal portion:
amplitude, 2.5VP-P; and pulse width, 0.5µs
SG4
2.5VP-P
0V
0.5µs
0.5µs
SG5
Standard
video step
waveform
Video signal with amplitude of 0.7VP-P (f=30kHz, amplitude sometimes variable)
4V
SG6
OSD BLK
and OSD
signals
0V
Pulses which are synchronous with standard video step waveform’s video portions: amplitude, 4.0VP-P; and pulse width, 15µs
4V
SG7
Retrace
BLK
signals
0V
Pulses which are synchronous with standard video step waveform’s video portions: amplitude, 4.0VP-P; and pulse width, 3µs
8
MITSUBISHI ICs (Monitor)
M52737SP
3-CHANNEL VIDEO PREAMPLIFIER WITH OSD MIXING, RETRACE BLANKING
2-1) Brightness terminal
APLLICATION METHOD FOR M52737SP
Used range is 1 to 5V
Control characteristic is shown in the right Fig. .
1) CLAMP PULSE INPUT
Input positive pulse.
5
4
3
2
1
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.
pulse width is recommended
above 15kHz, 1.0µsec
above 30kHz, 0.5µsec
above 64kHz, 0.3µsec .
0
1
2
3
4
5
6
Brightness Voltage (V)
2-2) Sub brightness
The clamp pulse circuit in ordinary set is a long roundabout way,
and beside high voltage, sometimes connected to external
terminal, it is very easy affected by large surge.
There is no sub brightness control function in this IC.
2-3) Hold capacitor
Therefore, the Fig. shown right is recommended.
It is necessary more than 0.01µF for this IC (when fH=15kHz).
In fact it is changed according with hold time (except clamping
time). It is need more capacitance for longer the hold time. In other
way, for application. The smaller the capacitance is, the higher the
response. The more the capacitance is, the more stable the action.
According to signal, it is free to set the value. (especially the status
of pulse for vertical sync timing).
VTH= 2.2V-Diode×1
=1.5V
2.5 to 5.0V
VTH (1.5V)
0V
3) BLK (for OSD) input terminal
Input type is open base (reference to page 4).
18
Threshold voltage is 2.5V.
If input of OSD signal without input of BLK pulse, the action will
be strange. Therefore, it is necessary to input BLK pulse when
input of OSD signal.
Grounding this terminal when the OSD function is not used.
If overlay OSD display period with clamp pulse period, the action
will be strange. The method for this situation, recommended
external circuit is as the right Fig.
2) Brightness action
VCC
DC level shift
–
+
signal
C/P
18
–
+
BLK
(for OSD)
19
brightness
(1 to 5V)
1
The upper figure is principle
9
MITSUBISHI ICs (Monitor)
M52737SP
3-CHANNEL VIDEO PREAMPLIFIER WITH OSD MIXING, RETRACE BLANKING
4) Retrace BLK input terminal
Input type is open base. (reference to page 5).
Threshold voltage is 1.5V.
Grounding this terminal when retrace blanking function is not
used.
5) OSD adjust terminal
Used range is 0 to 5V.
Control characteristic is shown in the right Fig. .
If there are something noises from the external of the terminals,
and it also affect the output of the terminals, add capacitances
will be effective for it.
Make the terminals of OSD adjust open or GND, when OSD
function is not used.
5
4
3
2
1
0
1
2
3
4
5
6
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.
10
MITSUBISHI ICs (Monitor)
M52737SP
3-CHANNEL VIDEO PREAMPLIFIER WITH OSD MIXING, RETRACE BLANKING
TEST CIRCUIT
SG7
a
b
560
560
560
V19
V36
2.2µ
2.2µ
2.2µ
SW20
36
35
34
31
29
20
19
23
22
21
33
32
30
27
26
25
24
28
VCC
NC
GND
VCC
NC
GND
VCC
NC
GND
M52737SP
VCC
2
GND
6
VCC
7
GND
11
GND
16
VCC
12
1
3
4
5
8
9
10
13
14
15
17
18
0.01µ
0.01µ
0.01µ
47µ
47µ
47µ
V4
SW1
a
V9
V14
V17
b
SW18
a
SW10
a
SW15
a
SW13
b
SW3
b
SW5
a
SW8
b
c
a
a
b
b
a
b
SG6
b
SG4
100µ
A
a
b
0.01µ
SGA
SG1
SG2
SG3
SG5
SG6
SWA
Units Resistance : Ω
12V
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
MITSUBISHI ICs (Monitor)
M52737SP
3-CHANNEL VIDEO PREAMPLIFIER WITH OSD MIXING, RETRACE BLANKING
APPLICATION EXAMPLE
CRT
110V
DC CLAMP
BLK IN
(for retrace)
560
0.01µ 2.2µ
560
0.01µ 2.2µ
560
0.01µ 2.2µ
2.2V
0.1µ
0 to 5V
0.1µ
35
36
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
M52737SP
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
0.01µ
0.1µ
0.01µ
0.01µ
0.1µ
0 to 5V
0 to 5V
0 to 5V
0.1µ
0.1µ
0 to 5V
47µ
0.01µ
47µ
0.01µ
47µ
0.01µ
12V
5V
BLK IN
(for OSD)
INPUT
(B)
OSD IN
(B)
INPUT
(G)
OSD IN
(G)
INPUT
(R)
OSD IN
(R)
CLAMP
Units Resistance : Ω
Capacitance : F
12
MITSUBISHI ICs (Monitor)
M52737SP
3-CHANNEL VIDEO PREAMPLIFIER WITH OSD MIXING, RETRACE BLANKING
DESCRIPTION OF PIN
Pin No.
Name
DC voltage (V )
Peripheral circuit of pins
Description of function
VCC
Input pulses of minimum
3.5V.
B-ch
G-ch
3.5 to 5V
BLK IN
(for OSD)
1
1
−
1V
maximum
Connected to GND if not
used.
2.5V
GND
0.9mA
2
7
12
VCC (B-ch)
VCC (G-ch)
VCC (R-ch)
Apply equivalent
voltage to 3 channels.
12
−
VCC
2k
2k
Clamped to about 2.5V
due to clamp pulses
from pin 18.
3
8
13
INPUT (B)
INPUT (G)
INPUT (R)
2.5
Input at low impedance.
2.5V
CP
GND
0.24mA
VCC
1.5k
4
9
Subcontrast
(B)
Subcontrast
(G)
Use at maximum 5V
for stable operation.
2.5
23.5k
2.5V
14
Subcontrast
(R)
GND
VCC
Input pulses of minimum
3.5V.
3.5 to 5V
5
10
15
OSD IN (B)
OSD IN (G)
OSD IN (R)
−
1V
maximum
2.5V
Connected to GND if not
used.
GND
1.1mA
13
MITSUBISHI ICs (Monitor)
M52737SP
3-CHANNEL VIDEO PREAMPLIFIER WITH OSD MIXING, RETRACE BLANKING
DESCRIPTION OF PIN (cont.)
Pin No.
Name
DC voltage (V )
GND
Peripheral circuit of pins
Description of function
6, 31
11, 26
16, 21
GND (B)
GND (G)
GND (R)
−
VCC
11k
Main
contrast
Use at maximum 5V for
stable operation.
2.5V
17
2.5
41k
GND
17
VCC
41k
Input pulses of minimum
2.5V.
2.5V
minimum
18
CP IN
−
18
0.5V
maximum
2.2V
Input at low impedance.
GND
VCC
20.3k
B-ch
19
Brightness
−
G-ch
19
GND
VCC
Input pulses of minimum
2.5V.
45k
B-ch
G-ch
2.5 to 5V
BLK IN
(for retrace)
20
−
20
0.5V
maximum
Connected to GND if not
used.
2.1V
GND
0.25mA
14
MITSUBISHI ICs (Monitor)
M52737SP
3-CHANNEL VIDEO PREAMPLIFIER WITH OSD MIXING, RETRACE BLANKING
DESCRIPTION OF PIN (cont.)
Pin No.
Name
DC voltage (V )
Peripheral circuit of pins
Description of function
22, 27, 32
NC
VCC
1k
23
28
33
Hold (R)
Hold (G)
Hold (B)
A capacity is needed on
the GND side.
Variable
0.2mA
GND
Used to supply power to
output emitter follower
only.
Apply equivalent voltage
to 3 channels.
24
29
34
VCC2 (R)
VCC2 (G)
VCC2 (B)
Pin 24
Pin 29
Pin 34
Apply 12
Variable
A resistor is needed on
the GND side.
25
30
35
OUTPUT (R)
OUTPUT (G)
OUTPUT (B)
Set discretionally to
maximum 15mA,
50
Pin 25
Pin 30
Pin 35
depending on the
required driving capacity.
VCC
65k
65k
50k
1k
Pulled up directly to VCC
or open if not used.
36
OSD adjust
at open 5.5V
10P
55k
55k
GND
15
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