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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.
BLK IN (FOR OSD) VCC1 (B) INPUT (B) SUB CONTRAST (B) OSD IN (B) GND1 (B) 1 2 3 4 5 6 7 8 9 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
PIN CONFIGURATION (TOP VIEW)
FEATURES
VCC1 (G) INPUT (G) SUB CONTRAST (G)
*
*
*
Frequency band width: RGB................................150MHz (3V P-P) OSD..............................................50MHz Input :RGB.............................................................0.7V P-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...........................................................4.5V P-P (max.) OSD...........................................................4.5V P-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.
M52737SP
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
APPLICATION
Display monitor
Outline 36P4E
NC : NO CONNECTION
RECOMMENDED OPERATING CONDITION
Supply voltage range....................................................11.5 to 12.5V Rated supply voltage................................................................12.0V
BLOCK DIAGRAM
HOLD (R) OUTPUT (B) HOLD (B) GND2 (B) VCC2 (G) NC OUTPUT (R) BLK IN (FOR RETRACE) OSD ADJUST HOLD (G) GND2 (G) VCC2 (R) NC GND2 (R) NC BRIGHTNESS VCC2 (B) OUTPUT (G) 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 Hold
G AMP
G Hold
R AMP
R Hold
B OSD Mix
B OSD Blanking
G OSD Mix
G OSD Blanking
R OSD Mix
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 GND1 (G) INPUT (B) VCC1 (G) INPUT (R) MAIN SUB OSD IN OSD IN (R) (FOR OSD) (B) CONTRAST(G) CONTRAST SUB SUB VCC1 (B) INPUT (G) CONTRAST(B) GND1 (B) VCC1 (R) CONTRAST(R) GND1 (R) OSD IN (G) CP IN
1
MITSUBISHI ICs (Monitor)
M52737SP
3-CHANNEL VIDEO PREAMPLIFIER WITH OSD MIXING, RETRACE BLANKING ABSOLUTE MAXIMUM RATINGS (Ta=25C)
Symbol VCC Pd Topr Tstg Vopr Vopr' Surge Parameter Supply voltage Power dissipation Ambient temperature Storage temperature Recommended supply voltage Recommended supply voltage range Electrostatic discharge Ratings 13.0 2403 -20 to +85 -40 to +150 12.0 11.5 to 12.5 200 Unit V mW C C V V V
ELECTRICAL CHARACTERISTICS (VCC=12V, Ta=25C, unless otherwise noted)
Test conditions Symbol Parameter Test point (s) A Input
SW13
External power supply (V)
Pulse input
SW1,
SW18 5, 10, SW20
Limits Unit Min. 72 6.2 Typ. 93 7.7 Max. 115 9.2 mA VP-P
SW8 SW3 V4 R-ch G-ch B-ch a - a - a - 5 5
V17 V19 V36 5 5 5
Variable
15
ICC Vomax
Circuit current Output dynamic range
2 - - -
b SG4 b SG4 b SG4 b SG4
a - a - a - a -
a - a - a - a -
Vimax
Maximum input
Gv Gv VCR1 VCR1 VCR2 VCR2 VSCR1 VSCR1
Maximum gain Relative maximum gain Contrast control characteristics (typical) Contrast control relative characteristics (typical) Contrast control characteristics (minimum)
Contrast control relative characteristics (minimum)
T.P.35 b b b T.P.30 SG5 SG5 SG5 T.P.25 T.P.35 b b b T.P.30 SG5 SG5 SG5 T.P.25 T.P.35 b b b T.P.30 SG5 SG5 SG5 T.P.25
5
2.5
2
1
1.6
-
VP-P
5
5
2
16.4 0.8
17.8 1 16.0 1 0.7 1 16.0
19.4 1.2 17.5 1.2 1.0 1.2 17.5
dB - dB - VP-P - dB -
Relative to measured values above T.P.35 b b b b a T.P.30 5 4 2 - SG5 SG5 SG5 SG4 - T.P.25 Relative to measured values above T.P.35 b b b T.P.30 SG5 SG5 SG5 T.P.25 5 1 2 - b SG4 a -
a -
14.5 0.8
a -
0.4 0.8
Relative to measured values above T.P.35 b b b T.P.30 SG5 SG5 SG5 T.P.25 4 5 2 - b SG4 a - a -
Sub contrast control characteristics (typical) Sub contrast control relative characteristics (typical) Sub contrast control characteristics (minimum)
Sub contrast control relative characteristics (minimum) Contrast/sub contrast control characteristics (typical) Contrast/sub contrast control relative characteristics (typical)
14.5
Relative to measured values above T.P.35 b b b T.P.30 SG5 SG5 SG5 T.P.25 - b SG4 a - a -
0.8
1
1.2
VSCR2 VSCR2 VSCR3 VSCR3
1
5
2
0.5 0.8
0.9 1 1.8
1.3 1.2 2.5
VP-P - VP-P -
Relative to measured values above T.P.35 b b b T.P.30 SG5 SG5 SG5 T.P.25 3 3 2 - b SG4 a - a -
1.1
Relative to measured values above T.P.35 T.P.30 T.P.25 a - a - a - - b SG4 a - a -
0.8
1
1.2
VB1 VB1
Brightness control characteristics (maximum)
Brightness control relative characteristics (maximum)
5
5
4
3.0 -0.3
3.6 0
4.2 0.3
V V
Relative to measured values above
2
MITSUBISHI ICs (Monitor)
M52737SP
3-CHANNEL VIDEO PREAMPLIFIER WITH OSD MIXING, RETRACE BLANKING
ELECTRICAL CHARACTERISTICS (cont.)
Test conditions Symbol Parameter Test point (s) T.P.35 T.P.30 T.P.25 Input
SW13
External power supply (V)
Pulse input
SW1,
SW18 5, 10, SW20
Limits Unit Min. Typ. Max.
SW8 SW3 R-ch G-ch B-ch V4 a - a - a - 5
V17 V19 V36 -
15
VB2 VB2 VB3 VB3 FC1 FC1 FC1' FC1' FC2
Brightness control characteristics (typical)
Brightness control relative characteristics (typical)
5
2
b SG4
a -
a -
1.2 -0.3
1.8 0 0.7 0 0
2.4 0.3 1.1 0.3 2.5
V V V V dB - dB - dB
Relative to measured values above T.P.35 T.P.30 T.P.25 a - a - a - 5 5 1 - b SG4 a - a -
Brightness control characteristics (minimum)
Brightness control relative characteristics (minimum)
0.3 -0.3
Relative to measured values above T.P.35 b b b T.P.30 SG1 SG1 SG1 T.P.25 5 Variable - - c - a - a -
Frequency characteristics 1 (f=50MHz;maximum)
Frequency relative characteristics 1 (f=50MHz;maximum)
-2
Relative to measured values above T.P.35 b b b T.P.30 SG2 SG2 SG2 T.P.25 Variable - - c - a - a -
-1
0
1
Frequency characteristics 1 (f=150MHz;maximum)
Frequency relative characteristics 1 (f=150MHz;maximum)
5
-3
-2.0
3
Relative to measured values above T.P.35 b b b T.P.30 SG2 SG2 SG2 T.P.25 Variable - - c - a - a -
-1
0
1
FC2
Frequency characteristics 2 (f=150MHz; maximum) Frequency relative characteristics 2 (f=150MHz; maximum) Crosstalk 1 (f=50MHz)
5
-3
0
3
Relative to measured values above T.P.35 b T.P.30 SG1 T.P.25 T.P.35 b T.P.30 SG2 T.P.25 T.P.35 T.P.30 T.P.25 T.P.35 T.P.30 T.P.25 T.P.35 T.P.30 T.P.25 T.P.35 T.P.30 T.P.25 a - a - a - a - a - a - b SG1 b SG2 a - a - a - a - a - a - b SG1 b SG2 c - c - c - c - c - c - b SG4 b SG4 b SG4 b SG4 b SG4 a - a - a - a - a - a - a - a - a - a - a - a - a - a - a - a - a - a - a - a - a - a -
-1
0
1
-
C.T.1
5
5
- - - - - -
- - - - - - - - - - -
- - - - - - - -
-30
-20
dB
C.T.1'
Crosstalk 1 (f=150MHz)
5
5
-20
-15
dB
C.T.2
Crosstalk 2 (f=50MHz)
5
5
-30
-20
dB
C.T.2'
Crosstalk 2 (f=150MHz)
5
5
-20
-15
dB
C.T.3
Crosstalk 3 (f=50MHz)
5
5
-30
-20
dB
C.T.3'
Crosstalk 3 (f=150MHz)
5
5
-20
-15
dB
Tr
Pulse characteristics 1
T.P.35 b b b T.P.30 SG3 SG3 SG3 T.P.25 T.P.35 b b b T.P.30 SG3 SG3 SG3 T.P.25 T.P.35 b b b T.P.30 SG5 SG5 SG5 T.P.25 T.P.35 b b b T.P.30 SG5 SG5 SG5 T.P.25 T.P.35 b b b T.P.30 SG5 SG5 SG5 T.P.25
5
Vari- Variable able Vari- Variable able 5 2
2.5
- -
nsec
Tf
Pulse characteristics 2 Clamp pulse threshold voltage Clamp pulse minimum width Pedestal voltage temperature characteristics1
5
2.5
nsec
V14th
5
1.0
1.5
2.5
VDC
W14
5
5
2
0.2
0.5
-
sec
PDCH
5
5
2
-0.3
0
0.3
VDC
3
MITSUBISHI ICs (Monitor)
M52737SP
3-CHANNEL VIDEO PREAMPLIFIER WITH OSD MIXING, RETRACE BLANKING
ELECTRICAL CHARACTERISTICS (cont.)
Test conditions Symbol Parameter Test point (s) Input
SW13
External power supply (V)
Pulse input
SW1,
SW18 5, 10, SW20
Limits Unit Min. Typ. Max.
SW8 SW3 R-ch G-ch B-ch V4 5
V17 V19 V36 -
15
PDCL
Pedestal voltage temperature characteristics2 OSD pulse characteristics1 OSD pulse characteristics2 OSD adjusting control characteristics (maximum) OSD adjusting control relative characteristics (maximum) OSD adjusting control characteristics (minimum) OSD adjusting control relative characteristics (minimum) OSD input threshold voltage BLK input threshold voltage Retrace BLK voltage Retrace BLK input threshold voltage
T.P.35 b b b T.P.30 SG5 SG5 SG5 T.P.25 T.P.35 T.P.30 T.P.25 T.P.35 T.P.30 T.P.25 T.P.35 T.P.30 T.P.25 a - a - a - a - a - a - a - a - a -
5
2
b SG4
a -
a - a - a - a -
-0.3
0
0.3
VDC
OTr
5
5
SW1...a Vari- Vari- b other...b able able SG4 SG6 SW1...a Vari- Vari- b other...b able able SG4 SG6
- -
3.5
8
nsec
OTf
5
5
3.5
8
nsec
Oaj1
5
5
2
4
b b SG4 SG6
3.9
4.6
5.3
VP-P
Oaj1
Relative to measured values above T.P.35 T.P.30 T.P.25 a - a - a - b b SG4 SG6 a -
0.8
1
1.2
-
Oaj2
5
5
2
0
-
0
0.5
VP-P
Oaj2
Relative to measured values above T.P.35 a a a T.P.30 - - - T.P.25 T.P.35 b b b T.P.30 SG5 SG5 SG5 T.P.25 T.P.35 a a a T.P.30 - - - T.P.25 T.P.35 a a a T.P.30 - - - T.P.25
SW1...a b other...b SG4 SG6
0.8 a - a - b SG7 b SG7
1
1.2
-
OSDth
5
5
2
5
1.7
2.5
3.5
VDC
V1th
5
5
2
5
b SW1...b SG6 SG4 other...a a - a - a - a -
1.7
2.5
3.5
VDC
HBLK
5
5
2
0
-
0.2
0.5
VDC
HVth
5
5
2
0
0.5
1.5
2.5
VDC
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. Sub contrast voltages V4, V9 and V14 are always set to the same voltage, therefore only V4 is referred to in Supplementary Table. ICC Circuit current Measuring conditions are as listed in Supplementary Table. 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.) 5.0
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)
(V)
4
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 [VP-P] 0.7 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: VCR1=20LOG VOR2 (VOG2, VOB2) [VP-P] [VP-P] 0.7
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.
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: VSCR1=20LOG VOR4 (VOG4, VOB4) [VP-P] [VP-P] 0.7
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]
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) 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. 3. To obtain brightness control relative characteristics (VB3), calculate the difference in the output between the channels, using VOR7", VOG7" and VOB7". VB3 =VOR7''-VOG7'' =VOG7''-VOB7'' =VOB7''-VOR7'' FC1 Frequency characteristics1 (f=50MHz; maximum) FC1 Frequency relative characteristics1 (f=50MHz; maximum) FC1' Frequency characteristics1 (f=150MHz; maximum) FC1' Frequency relative characteristics1 (f=150MHz; maximum) 1. Measuring conditions are as given in Supplementary Table. 2. First, SGA is as input signal. Input a resister that is about 2K to offer the voltage at input pins (Pin 3, Pin 8, Pin 13) in order that the bottom of input signal is 2.5V. Inputs the voltage at hold pins (Pin 23, Pin 28, Pin 33) in order that the bottom of sine wave output is 2V. 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. 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: VOR8 (VOG8, VOB8) FC1=20LOG 4.0 FC1'=20LOG VOR9 (VOG9, VOB9) 4.0 [VP-P] [VP-P] [VP-P] [VP-P] [V]
C.T.1 Crosstalk1 (f=50MHz) C.T.1' Crosstalk1 (f=150MHz) 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. Crosstalk C.T.1 (C.T.1') is calculated by the equation below: C.T.1 =20LOG (C.T.1') VOG or VOB VOR [VP-P] [dB] [VP-P]
C.T.2 Crosstalk2 (f=50MHz) C.T.2' Crosstalk2 (f=150MHz) 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'. 2. Crosstalk C.T. 2 (C.T.2') is calculated by the equation below: C.T.2 =20LOG (C.T.2') VOR or VOB VOG [VP-P] [dB] [VP-P]
C.T.3 Crosstalk3 (f=50MHz) C.T.3' Crosstalk3 (f=150MHz) 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: C.T.3 =20LOG (C.T.3') VOR or VOG VOB [VP-P] [dB] [VP-P]
Tr Pulse characteristics1 Tf Pulse characteristics2 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. 4. Pulse characteristics Tr and Tf are calculated by the equation below: Tr (nsec)= (Tr2)2-(Tr1)2
4. Frequency relative band widths FC1 and FC1' are equal to the difference in FC1 and FC1', respectively, between the channels. FC2 Frequency characteristics2 (f=150MHz; maximum) FC2' Frequency relative characteristics2 (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.
Tf (nsec)= (Tf2)2-(Tf1)2
100% 90%
10% 0% Tr1 or Tr2 Tf1 or Tf2
6
MITSUBISHI ICs (Monitor)
M52737SP
3-CHANNEL VIDEO PREAMPLIFIER WITH OSD MIXING, RETRACE BLANKING
V14th Clamp pulse threshold voltage 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. W14 Clamp pulse minimum width 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. PDCH Pedestal voltage temperature characteristics1 PDCL Pedestal voltage temperature characteristics2 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 -20C and 85C. The measured value is called, respectively, PDC2 and PDC3. 4. PDCH=PDC1 - PDC2 PDCL=PDC1 - PDC3 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. 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 : OTr (nsec)= (OTr2)2-(OTr1)2 OTf (nsec)= (OTf2)2-(OTf1)2 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 HBLK Retrace BLK voltage 1. Measuring conditions are as given in Supplementary Table. 2. Monitoring to output at that time, read the level of retrace blanking. 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. V1th BLK input threshold voltage 1. Measuring conditions are as given in Supplementary Table. 2. Make sure that signals are not being output synchronously with SG6 (blanking period). 3. Reduce the SG6 input level gradually, monitoring output. Measure the SG6 level when the blanking period disappears. The measured value is called V1th.
Oaj2 OSD adjusting control characteristics (minimum) Oaj2 OSD adjusting control relative characteristics (minimum) Measuring conditions and procedure are the same as described in Note 23, except that V36 is set to 0V. OSDth OSD input threshold voltage 1. Measuring conditions are as given in Supplementary Table. 2. Reduce the SG6 input level gradually, monitoring output. Measure the SG6 level when the output reaches 0V. The measured value is called OSDth.
7
MITSUBISHI ICs (Monitor)
M52737SP
3-CHANNEL VIDEO PREAMPLIFIER WITH OSD MIXING, RETRACE BLANKING
INPUT SIGNAL
SG No. Sine wave with amplitude of 0.7VP-P (f=1MHz) SGA Signals
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, 0.5s
SG4
0V 0.5s
2.5VP-P
0.5s
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, 15s
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, 3s
8
MITSUBISHI ICs (Monitor)
M52737SP
3-CHANNEL VIDEO PREAMPLIFIER WITH OSD MIXING, RETRACE BLANKING APLLICATION METHOD FOR M52737SP
1) CLAMP PULSE INPUT Input positive pulse. 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, 1.0sec above 30kHz, 0.5sec above 64kHz, 0.3sec . 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. Therefore, the Fig. shown right is recommended.
VTH= 2.2V-Diodex1 =1.5V 2.5 to 5.0V VTH (1.5V) 0V
2-1) Brightness terminal Used range is 1 to 5V Control characteristic is shown in the right Fig. .
Output DC Voltage (V)
5 4 3 2 1 0 1 2 3 4 5 6
Brightness Voltage (V)
There is no sub brightness control function in this IC. 2-3) Hold capacitor It is necessary more than 0.01F 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). 3) BLK (for OSD) input terminal Input type is open base (reference to page 4). 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.
18
2) Brightness action
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.
signal
- +
DC level shift C/P
VCC
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
OSD output (VP-P)
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
V36
560 2.2
560 2.2
560 2.2
a SW20
b
V19
36
35
34 VCC
33
32 NC
31 GND
30
29 VCC
28
27 NC
26 GND
25
24 VCC
23
22 NC
21 GND
20
19
M52737SP
VCC 1 2 3 47 0.01 SW1 a 4 5
GND 6
VCC 7 8 47 0.01 V9 9 10
GND 11
VCC 12 13 47 0.01 V14 SW13 b SW15 a 14 15
GND 16 17 18
V4
V17 SW18 a b
b SW3 b SW5 a SW8 b SW10 a
SG6
a
b
a
b
a
b
c
SG4 A a b 0.01 SGA SWA SG1 SG2 SG3 12V SG5 SG6 Units Resistance : Capacitance : F 100
TYPICAL CHARACTERISTICS
THERMAL DERATING (MAXIMUM RATING)
2800
POWER DISSIPATION Pd (mW)
2403 2400 2000 1600 1200 800 400
-20
0
25
50
75 85 100
125
150
AMBIENT TEMPERATURE Ta (C)
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MITSUBISHI ICs (Monitor)
M52737SP
3-CHANNEL VIDEO PREAMPLIFIER WITH OSD MIXING, RETRACE BLANKING APPLICATION EXAMPLE
CRT 110V
DC CLAMP
BLK IN (for retrace)
560 0.01 2.2 0 to 5V 36 0.1 35 34 33 32 31 30
560 0.01 2.2
560 2.2V 0.01 2.2 0.1
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
0.01
0.01
0.01
0.1
0.1 0 to 5V 0.1 0 to 5V 0.1 0 to 5V 47 0.01 47 0.01 47 0.01 0 to 5V
12V
5V
BLK IN (for OSD)
INPUT (B)
OSD IN (B)
INPUT (G)
OSD IN (G)
INPUT (R)
OSD IN (R)
CLAMP Units Resistance : Capacitance : F
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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
VCC
Description of function
B-ch G-ch
Input pulses of minimum 3.5V.
3.5 to 5V 1V maximum 2.5V GND
1
BLK IN (for OSD)
-
1
Connected to GND if not used.
0.9mA
2 7 12
VCC (B-ch) VCC (G-ch) VCC (R-ch)
12
-
Apply equivalent voltage to 3 channels.
VCC 2k 2k
3 8 13
INPUT (B) INPUT (G) INPUT (R)
2.5
Clamped to about 2.5V due to clamp pulses from pin 18. Input at low impedance.
2.5V CP 0.24mA
GND
VCC
4 9 14
Subcontrast (B) Subcontrast (G) Subcontrast (R)
1.5k
2.5
23.5k
2.5V
Use at maximum 5V for stable operation.
GND
VCC
Input pulses of minimum 3.5V. 5 10 15 OSD IN (B) OSD IN (G) OSD IN (R)
3.5 to 5V
-
2.5V
1V maximum
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. 6, 31 11, 26 16, 21 Name GND (B) GND (G) GND (R) DC voltage (V ) GND Peripheral circuit of pins - Description of function
VCC 11k
17
Main contrast
2.5
41k
2.5V
Use at maximum 5V for stable operation.
GND 17
VCC 41k
Input pulses of minimum 2.5V.
2.5V minimum 0.5V maximum 2.2V
18
CP IN
-
18
Input at low impedance.
GND
VCC 20.3k
19
Brightness
-
19
B-ch G-ch
GND
VCC 45k B-ch G-ch
Input pulses of minimum 2.5V.
2.5 to 5V 0.5V maximum 2.1V GND
20
BLK IN (for retrace)
-
20
Connected to GND if not used.
0.25mA
14
MITSUBISHI ICs (Monitor)
M52737SP
3-CHANNEL VIDEO PREAMPLIFIER WITH OSD MIXING, RETRACE BLANKING
DESCRIPTION OF PIN (cont.)
Pin No. 22, 27, 32 Name NC
VCC
DC voltage (V )
Peripheral circuit of pins
Description of function
23 28 33
Hold (R) Hold (G) Hold (B)
1k
Variable
0.2mA GND
A capacity is needed on the GND side.
24 29 34
VCC2 (R) VCC2 (G) VCC2 (B)
Apply 12
Pin 24 Pin 29 Pin 34
Used to supply power to output emitter follower only. Apply equivalent voltage to 3 channels. A resistor is needed on the GND side. Set discretionally to maximum 15mA, depending on the required driving capacity.
25 30 35
OUTPUT (R) OUTPUT (G) OUTPUT (B)
Variable
50 Pin 25 Pin 30 Pin 35
VCC 65k 50k 65k
36
OSD adjust
at open 5.5V
1k
Pulled up directly to VCC or open if not used.
55k
10P
55k GND
15

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