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 1 36 OSD ADJUST The circuit is most useful with high-resolution displays that have VCC1 (B) 2 35 OUTPUT (B) OSD, and its function are available for each channel, including OSD INPUT (B) 3 34 VCC2 (B) blanking, OSD mixing, retrace blanking, wide-band amplification, SUB CONTRAST (B) 4 33 HOLD (B) OSD IN (B) 5 32 NC GND1 (B) 6 31 GND2 (B) VCC1 (G) 7 30 OUTPUT (G) INPUT (G) 8 29 VCC2 (G) SUB CONTRAST (G) 9 contrast control (main and sub), and brightness control. FEATURES • • • 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 BLK IN (FOR OSD) 150MHz. The circuit also features the OSD mixing function. OSD IN (G) 10 GND1 (G) 11 28 HOLD (G) 27 NC 26 GND2 (G) 25 OUTPUT (R) VCC1 (R) 12 24 VCC2 (R) INPUT (R) 13 23 HOLD (R) SUB CONTRAST (R) 14 22 NC OSD IN (R) 15 21 GND2 (R) GND1 (R) 16 20 BLK IN (FOR RETRACE) MAIN CONTRAST 17 19 BRIGHTNESS CP IN 18 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 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 B-ch BLK 29 28 26 25 G-ch BLK 24 23 22 G Brightness 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 3 4 5 6 7 20 19 16 17 18 R Brightness B AMP 2 21 R-ch BLK B Brightness 1 27 8 9 10 11 12 13 14 15 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=25°C) 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 Unit 13.0 2403 -20 to +85 -40 to +150 12.0 11.5 to 12.5 ±200 V mW °C °C V V V ELECTRICAL CHARACTERISTICS (VCC=12V, Ta=25°C, unless otherwise noted) Test conditions Symbol Parameter ICC Circuit current Vomax Output dynamic range Vimax Maximum input Gv Maximum gain ∆Gv Relative maximum gain VCR1 Contrast control characteristics (typical) ∆VCR1 VCR2 Contrast control relative characteristics (typical) Contrast control characteristics (minimum) ∆VCR2 Contrast control relative characteristics (minimum) VSCR1 Sub contrast control characteristics (typical) ∆VSCR1 VSCR2 Sub contrast control relative characteristics (typical) Sub contrast control characteristics (minimum) ∆VSCR2 Sub contrast control relative characteristics (minimum) VSCR3 Contrast/sub contrast control characteristics (typical) ∆VSCR3 Contrast/sub contrast control relative characteristics (typical) VB1 Brightness control characteristics (maximum) ∆VB1 Brightness control relative characteristics (maximum) Input Test point (s) SW13 A a − External power supply (V) SW8 SW3 V4 R-ch G-ch B-ch a − a − 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 Unit SW1, V17 V19 V36 SW18 5, 10, SW20 5 5 2 a − a − 72 93 115 mA 5 5 Variable − b SG4 a − a − 6.2 7.7 9.2 VP-P 5 2.5 2 − b SG4 a − a − 1 1.6 − VP-P 5 5 2 − b SG4 a − a − 16.4 17.8 19.4 dB 0.8 1 1.2 − 14.5 16.0 17.5 dB 0.8 1 1.2 − 0.4 0.7 1.0 VP-P 0.8 1 1.2 − 14.5 16.0 17.5 dB 0.8 1 1.2 − 0.5 0.9 1.3 VP-P 0.8 1 1.2 − 1.1 1.8 2.5 VP-P 0.8 1 1.2 − 3.0 3.6 4.2 V -0.3 0 0.3 V a − 5 1 2 − b SG4 a − a − 4 5 2 − b SG4 a − a − Relative to measured values above 1 5 2 − b SG4 a − a − 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 − Relative to measured values above T.P.35 T.P.30 T.P.25 a − a − a − Max. 5 Relative to measured values above T.P.35 b b b T.P.30 SG5 SG5 SG5 T.P.25 Typ. 15 Relative to measured values above T.P.35 b b b T.P.30 SG5 SG5 SG5 T.P.25 Min. b SG4 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 T.P.35 b b b T.P.30 SG5 SG5 SG5 T.P.25 Limits Pulse input 5 5 4 − b SG4 Relative to measured values above a − a − 2 MITSUBISHI ICs (Monitor) M52737SP 3-CHANNEL VIDEO PREAMPLIFIER WITH OSD MIXING, RETRACE BLANKING ELECTRICAL CHARACTERISTICS (cont.) Test conditions Symbol VB2 Brightness control characteristics (typical) ∆VB2 Brightness control relative characteristics (typical) VB3 Brightness control characteristics (minimum) ∆VB3 Brightness control relative characteristics (minimum) FC1 Frequency characteristics 1 (f=50MHz;maximum) ∆FC1 Frequency relative characteristics 1 (f=50MHz;maximum) FC1’ Frequency characteristics 1 (f=150MHz;maximum) ∆FC1’ Frequency relative characteristics 1 (f=150MHz;maximum) FC2 ∆FC2 3 Parameter Frequency characteristics 2 (f=150MHz; maximum) Frequency relative characteristics 2 (f=150MHz; maximum) Input Test point (s) SW13 T.P.35 T.P.30 T.P.25 a − External power supply (V) SW8 SW3 R-ch G-ch B-ch V4 a − a − 5 Unit SW1, V17 V19 V36 SW18 5, 10, SW20 a − a − a − 5 5 2 − b SG4 a − a − 5 1 − b SG4 a − a − 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 − Relative to measured values above T.P.35 b b b T.P.30 SG2 SG2 SG2 T.P.25 5 Variable − − c − a − a − Relative to measured values above T.P.35 b b b T.P.30 SG2 SG2 SG2 T.P.25 5 Min. Typ. Max. 1.2 1.8 2.4 V -0.3 0 0.3 V 0.3 0.7 1.1 V -0.3 0 0.3 V -2 0 2.5 dB -1 0 1 − -3 -2.0 3 dB -1 0 1 − -3 0 3 dB -1 0 1 − 15 Relative to measured values above T.P.35 T.P.30 T.P.25 Limits Pulse input Variable − − c − a − a − Relative to measured values above C.T.1 Crosstalk 1 (f=50MHz) T.P.35 b T.P.30 SG1 T.P.25 a − a − 5 5 − − c − a − a − − -30 -20 dB C.T.1’ Crosstalk 1 (f=150MHz) T.P.35 b T.P.30 SG2 T.P.25 a − a − 5 5 − − c − a − a − − -20 -15 dB C.T.2 Crosstalk 2 (f=50MHz) T.P.35 T.P.30 T.P.25 a − b SG1 a − 5 5 − − c − a − a − − -30 -20 dB C.T.2’ Crosstalk 2 (f=150MHz) T.P.35 T.P.30 T.P.25 a − b SG2 a − 5 5 − − c − a − a − − -20 -15 dB C.T.3 Crosstalk 3 (f=50MHz) T.P.35 T.P.30 T.P.25 a − a − b SG1 5 5 − − c − a − a − − -30 -20 dB C.T.3’ Crosstalk 3 (f=150MHz) T.P.35 T.P.30 T.P.25 a − a − b SG2 5 5 − − c − a − a − − -20 -15 dB Tr Pulse characteristics 1 T.P.35 b b b T.P.30 SG3 SG3 SG3 T.P.25 5 Vari- Variable able − b SG4 a − a − − 2.5 − nsec Tf Pulse characteristics 2 T.P.35 b b b T.P.30 SG3 SG3 SG3 T.P.25 5 Vari- Variable able − b SG4 a − a − − 2.5 − nsec V14th Clamp pulse threshold voltage W14 Clamp pulse minimum width PDCH Pedestal voltage temperature characteristics1 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 5 2 − b SG4 a − a − 1.0 1.5 2.5 VDC 5 5 2 − b SG4 a − a − 0.2 0.5 − µsec 5 5 2 − b SG4 a − a − -0.3 0 0.3 VDC MITSUBISHI ICs (Monitor) M52737SP 3-CHANNEL VIDEO PREAMPLIFIER WITH OSD MIXING, RETRACE BLANKING ELECTRICAL CHARACTERISTICS (cont.) Test conditions Symbol Parameter Test point (s) Input External power supply (V) SW8 SW3 R-ch G-ch B-ch V4 SW13 PDCL 5 5 OTr OSD pulse characteristics1 T.P.35 T.P.30 T.P.25 OTf OSD pulse characteristics2 ∆Oaj1 Oaj2 OSD adjusting control characteristics (maximum) OSD adjusting control relative characteristics (maximum) OSD adjusting control characteristics (minimum) ∆Oaj2 OSD adjusting control relative characteristics (minimum) OSDth OSD input threshold voltage V1th BLK input threshold voltage HBLK Retrace BLK voltage HVth Retrace BLK input threshold voltage Min. Typ. a − -0.3 0 0.3 VDC SW18 5, 10, SW20 2 − b SG4 a − a − a − a − 5 5 SW1...a Vari- Vari- b other...b able able SG4 SG6 a − − 3.5 8 nsec a − a − a − 5 5 SW1...a Vari- Vari- b other...b able able SG4 SG6 a − − 3.5 8 nsec a − a − a − 5 5 b b SG4 SG6 a − 3.9 4.6 5.3 VP-P 0.8 1 1.2 − − 0 0.5 VP-P 0.8 1 1.2 − 2 4 Relative to measured values above T.P.35 T.P.30 T.P.25 Max. 15 T.P.35 b b b T.P.30 SG5 SG5 SG5 T.P.25 Oaj1 Unit SW1, V17 V19 V36 Pedestal voltage temperature characteristics2 T.P.35 T.P.30 T.P.25 T.P.35 T.P.30 T.P.25 Limits Pulse input a − a − a − 5 5 2 0 b b SG4 SG6 a − 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 5 5 2 5 SW1...a b other...b SG4 SG6 a − 1.7 2.5 3.5 VDC 5 5 2 5 b SW1...b SG6 SG4 other...a a − 1.7 2.5 3.5 VDC 5 5 2 0 a − a − b SG7 − 0.2 0.5 VDC 5 5 2 0 a − a − b SG7 0.5 1.5 2.5 VDC ELECTRICAL CHARACTERISTICS TEST METHOD 1. Because a description of signal input pin and pulse input pin 2. Increase V19 gradually, and measure the voltage when the top switch numbers is already given in Supplementary Table, only of the waveform output at T.P25 (30 or 35) is distorted. The external power supply switch numbers are included in the notes voltage is called VOHR (VOHG or VOHB). below. 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 (V) 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. 5.0 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 Voltage V17 is changed to 2.5V, and increase the input signal VSCR2 Sub contrast control characteristics (minimum) ∆VSCR2 Sub contrast control relative characteristics (minimum) amplitude gradually, starting from 700mV P-P. 1. Set V4, V9 and V14 to 1.0V. Other conditions are as given in Measure the amplitude when the output signal starts becoming distorted. 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. Gv Maximum gain ∆Gv Relative maximum gain 3. Relative characteristics ∆VSCR2 are calculated by the equation below: ∆VSCR2=VOR5/VOG5, VOG5/VOB5, VOB5/VOR5 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 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 VCR1 Contrast control characteristics (typical) ∆VCR1 Contrast control relative characteristics (typical) 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 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 ∆VCR1=VOR2/VOG2, VOG2/VOB2, VOB2/VOR2 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. 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. ∆VB1 =VOR7-VOG7 [V] =VOG7-VOB7 =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: ∆VOR2=VOR3/VOG3, VOG3/VOB3, VOB3/VOR3 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 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. 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'. 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 ∆VSCR1=VOR4/VOG4, VOG4/VOB4, VOB4/VOR4 5 ∆VB2 =VOR7'-VOG7' =VOG7'-VOB7' =VOB7'-VOR7' [V] MITSUBISHI ICs (Monitor) M52737SP 3-CHANNEL VIDEO PREAMPLIFIER WITH OSD MIXING, RETRACE BLANKING VB3 Brightness control characteristics (minimum) ∆VB3 Brightness control relative characteristics (minimum) C.T.1 Crosstalk1 (f=50MHz) C.T.1' Crosstalk1 (f=150MHz) 1. Measuring conditions are as given in Supplementary Table. 1. Measuring conditions are as given in Supplementary Table. 2. Measure the output at T.P25 (30 or 35) with a voltmeter. 2. Input SG1 (or SG2) to pin 13 (R-ch) only, and then measure the The measured value is called VOR7" (VOG7" or VOB7"), and is waveform amplitude output at T.P25 (30 or 35). The measured treated as VB2. value is called VOR, VOG and or VOB respectively. 3. To obtain brightness control relative characteristics (∆VB3), 3. Crosstalk C.T.1 (C.T.1') is calculated by the equation below: calculate the difference in the output between the channels, ∆VB3 =VOR7''-VOG7'' VOG or VOB VOR C.T.1 =20LOG (C.T.1') using VOR7", VOG7" and VOB7". [VP-P] [dB] [VP-P] [V] C.T.2 Crosstalk2 (f=50MHz) C.T.2' Crosstalk2 (f=150MHz) =VOG7''-VOB7'' =VOB7''-VOR7'' 1. Change the input pin from pin 8 (G-ch), and measure the output FC1 Frequency characteristics1 (f=50MHz; maximum) ∆FC1 Frequency relative characteristics1 (f=50MHz; maximum) 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') 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 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. Inputs the voltage at hold pins (Pin 23, Pin 28, Pin 33) in order 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: that the bottom of sine wave output is 2V. C.T.3 =20LOG (C.T.3') Control the MAIN CONTRAST (V17) in order that the amplitude VOR or VOG VOB [VP-P] [dB] [VP-P] 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 Tr Pulse characteristics1 Tf Pulse characteristics2 1. Measuring conditions are as given in Supplementary Table. (VOG8 or VOB8) when SG1 is input, or as VOR9 (VOG9 or VOB9) Control the MAIN CONTRAST(V17) in order that the amplitude when SG2 is input, frequency characteristics F C1 and FC1' are of output signal is 4.0VP-P. Control the BRIGHTNESS(V19) in calculated as follows: VOR8 (VOG8, VOB8) FC1=20LOG 4.0 FC1'=20LOG VOR9 (VOG9, VOB9) 4.0 order that the Black level of output signal is 2.0V. [VP-P] [VP-P] [VP-P] [VP-P] 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. Frequency relative band widths ∆FC1 and ∆FC1' are equal to the difference in FC1 and FC1', respectively, between the channels. 4. Pulse characteristics Tr and Tf are calculated by the equation below: Tr (nsec)= (Tr2)2-(Tr1)2 FC2 Frequency characteristics2 (f=150MHz; maximum) ∆FC2' Frequency relative characteristics2 (f=150MHz; maximum) Tf (nsec)= (Tf2)2-(Tf1)2 100% 90% 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 1.0V P-P. 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. 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. 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 -20°C and 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. 85°C. The measured value is called, respectively, P DC2 and Measure the SG6 level when the blanking period disappears. PDC3. The measured value is called V1th. 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 2. Monitoring to output at that time, read the level of retrace blanking. of output signal is 3.0VP-P. Control the BRIGHTNESS(V19) in HVth Retrace BLK input threshold voltage 1. Measuring conditions are as given in Supplementary Table. order that the Black level of output signal is 2.0V. 2. Confirm that output signal is being blanked by the SG7 at the 2. Measure the time needed for the input pulse to rise from 10% to time. 90% (OTr1) and to fall from 90% to 10% (OTf1) with an active Monitoring to output signal, decreasing the level of SG7. prove. Measure the top level of SG7 when the blanking period is 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 7 HBLK Retrace BLK voltage 1. Measuring conditions are as given in Supplementary Table. disappeared. 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 SG1 SG2 0.7VP-P 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, 4.0V P-P; and pulse width, 15µs 4V SG7 Retrace BLK signals 0V Pulses which are synchronous with standard video step waveform’s video portions: amplitude, 4.0V P-P; and pulse width, 3µs 8 MITSUBISHI ICs (Monitor) M52737SP 3-CHANNEL VIDEO PREAMPLIFIER WITH OSD MIXING, RETRACE BLANKING APLLICATION METHOD FOR M52737SP 2-1) Brightness terminal Used range is 1 to 5V 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. Output DC Voltage (V) Control characteristic is shown in the right Fig. . 1) CLAMP PULSE INPUT Input positive pulse. 5 4 3 2 1 pulse width is recommended 0 above 15kHz, 1.0µsec 1 2 3 4 5 6 Brightness Voltage (V) above 30kHz, 0.5µsec above 64kHz, 0.3µsec . 2-2) Sub brightness The clamp pulse circuit in ordinary set is a long roundabout way, There is no sub brightness control function in this IC. and beside high voltage, sometimes connected to external terminal, it is very easy affected by large surge. 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 VTH= 2.2V-Diode×1 =1.5V time). It is need more capacitance for longer the hold time. In other 2.5 to 5.0V VTH (1.5V) 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 0V 18 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. ⋅ If overlay OSD display period with clamp pulse period, the action 2) Brightness action will be strange. The method for this situation, recommended external circuit is as the right Fig. signal VCC DC level shift – + C/P 18 – + BLK (for OSD) 19 brightness (1 to 5V) The upper figure is principle 9 1 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. OSD output (VP-P) 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 560 V36 560 2.2µ 35 36 34 a 560 2.2µ 33 VCC 32 31 NC GND 29 30 2.2µ 27 26 NC GND 28 VCC 25 V19 SW20 23 24 b VCC 22 21 NC GND 20 19 17 18 M52737SP VCC 1 2 3 4 47µ 0.01µ SW1 a 5 GND VCC 6 7 8 9 10 47µ 0.01µ V4 GND VCC 11 12 GND 13 14 15 16 47µ 0.01µ V9 V14 V17 b SW3 b SG6 SW5 a a b SW8 b a SW10 a b SW13 b a SW15 a b SW18 a b c SG4 100µ A a b 0.01µ SGA SWA SG1 SG2 SG3 12V SG5 SG6 Units Resistance : Ω Capacitance : F TYPICAL CHARACTERISTICS THERMAL DERATING (MAXIMUM RATING) POWER DISSIPATION Pd (mW) 2800 2403 2400 2000 1600 1200 800 400 -20 0 25 50 75 85 100 125 AMBIENT TEMPERATURE Ta (°C) 11 150 MITSUBISHI ICs (Monitor) M52737SP 3-CHANNEL VIDEO PREAMPLIFIER WITH OSD MIXING, RETRACE BLANKING APPLICATION EXAMPLE CRT 110V DC CLAMP BLK IN (for retrace) 560 560 560 2.2V 0.01µ 2.2µ 0 to 5V 0.01µ 2.2µ 0.01µ 2.2µ 0.1µ 0.1µ 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 11 12 13 14 15 16 17 18 M52737SP 1 2 3 4 5 0.01µ 6 7 8 9 10 0.1µ 0.01µ 0.01µ 0.1µ 0 to 5V 0.1µ 0 to 5V 0.1µ 0 to 5V 0.01µ 47µ 12V 5V BLK IN (for OSD) INPUT (B) OSD IN (B) 0.01µ 47µ INPUT (G) OSD IN (G) 0.01µ 47µ INPUT (R) OSD IN (R) 0 to 5V 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 1 BLK IN (for OSD) − B-ch ⋅Input pulses of minimum 3.5V. G-ch 3.5 to 5V 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 3 8 13 INPUT (B) INPUT (G) INPUT (R) 2k ⋅Clamped to about 2.5V due to clamp pulses from pin 18. ⋅Input at low impedance. 2.5 2.5V CP GND 0.24mA VCC 4 9 14 Subcontrast (B) Subcontrast (G) Subcontrast (R) 1.5k 2.5 23.5k ⋅Use at maximum 5V for stable operation. 2.5V GND VCC ⋅Input pulses of minimum 3.5V. 5 10 15 OSD IN (B) OSD IN (G) OSD IN (R) 3.5 to 5V − 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. 6, 31 11, 26 16, 21 Name GND (B) GND (G) GND (R) DC voltage (V ) Peripheral circuit of pins GND − Description of function VCC 11k 17 Main contrast 2.5 ⋅Use at maximum 5V for stable operation. 2.5V 41k GND 17 VCC ⋅Input pulses of minimum 2.5V. 41k 18 CP IN − 2.5V minimum 18 0.5V maximum 2.2V ⋅Input at low impedance. GND VCC 20.3k 19 Brightness B-ch − G-ch 19 GND VCC B-ch ⋅Input pulses of minimum 2.5V. G-ch 2.5 to 5V 45k 20 BLK IN (for retrace) − 20 0.5V maximum ⋅Connected to GND if not used. 2.1V 0.25mA GND 14 MITSUBISHI ICs (Monitor) M52737SP 3-CHANNEL VIDEO PREAMPLIFIER WITH OSD MIXING, RETRACE BLANKING DESCRIPTION OF PIN (cont.) Pin No. 22, 27, 32 Name DC voltage (V ) Peripheral circuit of pins Description of function NC VCC 23 28 33 Hold (R) Hold (G) Hold (B) 1k ⋅A capacity is needed on the GND side. Variable 0.2mA GND 24 29 34 VCC2 (R) VCC2 (G) VCC2 (B) 25 30 35 OUTPUT (R) OUTPUT (G) OUTPUT (B) ⋅Used to supply power to output emitter follower only. ⋅Apply equivalent voltage to 3 channels. Pin 24 Pin 29 Pin 34 Apply 12 ⋅A resistor is needed on the GND side. Set discretionally to maximum 15mA, depending on the required driving capacity. Variable 50 Pin 25 Pin 30 Pin 35 VCC 65k 36 OSD adjust at open 5.5V 50k 65k ⋅Pulled up directly to VCC or open if not used. 1k 55k 10P 55k GND 15