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MITSUMI
RGB Video Amplifier with OSD Input MM1381, 1382, 1383
RGB Video Amplifier with OSD Input
Monolithic IC MM1381, 1382, 1383
Outline
MM1381XD, MM1382XD and MM1383XD are wideband RGB video amplifiers with OSD input, developed for use in monitors. The main differences between them are video amp bandwidth and output rise time, and output fall time. Model Video amp band Output rise time Output fall time MM1381 85MHz 3.5nS 4.5nS MM1382 110MHz 3.0nS 4.0nS MM1383 140MHz 2.3nS 3.3nS
MM1382XD is described here as the representative model. MM1382 is a wideband video amp system with OSD input, developed for use in high resolution RGB monitors. MM1382 has three matched video amps with a blanking function. All DC control input is high impedance, and the operating range is set for easy interface with serial bus control systems, at 0~4V. The OSD section has three TTL inputs and DC contrast control. OSD signals have TTL input interface, and these signals are made internally so that OSD input low level and video black level are the same. OSD display color balance follows video signal color balance control adjustment. In addition, MM1382 has a built-in spot-killer circuit that protects the CRT when monitor power is turned off.
Features
1. Built-in wideband video amp 110MHz @ -3dB (4VP-P output) 2. OSD input has TTL interface bandwidth 50MHz 3. Output voltage less than 0.1V for blanking 4. High-speed switching between VIDEO/OSD 5. Each channel has an independent drive pin for color balance adjustment 6. Built-in high impedance DC contrast control, 0~4V (> 40dB range) 7. Built-in high impedance DC drive control, 0~4V (3dB range) 8. Built-in high impedance DC OSD contrast control, 0~4V (> 40dB range) 9. 7VP-P output swing (band slightly attenuated) 10Output can drive hybrid or discrete CRT drivers directly
Package
DIP-28C (MM1381XD, MM1382XD, MM1383XD)
Applications
1. 2. 3. 4. High resolution RGB CRT monitors with OSD function AGC amps for video Gain and DC offset control LCD or CCD system interface amp
MITSUMI
RGB Video Amplifier with OSD Input MM1381, 1382, 1383
Block Diagram
MITSUMI
RGB Video Amplifier with OSD Input MM1381, 1382, 1383
Pin Description
Pin no. 1 2 3 Pin name R OSD IN G OSD IN B OSD IN Internal equivalent circuit diagram Pin Description These inputs accept standard TTL input. Each color is either completely ON (logic high) or completely OFF (logic low). Connect unused pins to ground with a 47k resistor.
4
VIDEO/OSD SWITCH
This input accepts standard TTL input. H : OSD, L : VIDEO Connect OSD to ground with a 47k resistor when not in use.
5 8 11
R VIDEO IN G VIDEO IN B VIDEO IN
Video inputs. These inputs must be AC coupled using a capacitor of at least 1F. The ideal capacitance is 10 (F. DC playback is done with these inputs. Also, serial resistor of approximately 33 must be used.
6 9 7 10 21 12
VCC1 GND
Power supply pin (except for output stage). GND pins. The GND pins are all connected internally, and must be connected on the board as well.
VREF VIDEO CONTRAST OSD CONTRAST B DRIVE G DRIVE R DRIVE
Used for internal reference additional filter capacitor. Voltage of this pin is 2.0V. Contrast control pin : 4V no attenuation 0V attenuation over 60dB Drive control pin : 4V no attenuation 0V 12dB attenuation
13 14 26 27 28
MITSUMI
RGB Video Amplifier with OSD Input MM1381, 1382, 1383
Pin no. 15 16
Pin name CLAMP GATE BLANK GATE
Internal equivalent circuit diagram
Pin Description These two pins accept TTL input and are active low. Clamp gate supplies video signal DC playback. Blank gate makes video output less than 200mV.
17 19 24
B CLAMP CAP G CLAMP CAP R CLAMP CAP
External clamp capacitors are charged, then discharged to the correction voltage required for DC playback. Recommended value is 0.1F.
18 20 23
B VIDEO OUT G VIDEO OUT R VIDEO OUT
Video output. Output must have 390 impedance to obtain the correct black level.
22
VCC2
Output stage power supply pin. Internal connection to VCC1 does not exist.
25
RGB CUT OFF ADJUST
Sets video output black level for all three channels. Range : 0~4V Minimum value for black level is limited to approximately 300mV.
MITSUMI
RGB Video Amplifier with OSD Input MM1381, 1382, 1383
Absolute Maximum Ratings *1
Item Storage temperature Power supply voltage Input voltage range Video output current Allowable loss Electrostatic breakdown Pin temperature 265 Symbol TSTG VCC max. VIN max. IO Pd Ratings -55~+150 15.0 GND < VIN < VCC = = 28 2.5 2 Units C V V mA W kV C
*16
Recommended Operating Conditions *2
Item Operating temperature Operating voltage Symbol TOPR VOPR Ratings -20~+70 11.4~12.6 Units C V
DC Electrical Characteristics
Item Consumption current 7 Video input resistance Clamp gate input voltage L Clamp gate input voltage H Clamp gate input current L Clamp gate input current H Blanking gate input voltage L Blanking gate input voltage H Blanking gate input current L Blanking gate input current H Reference voltage Input capacitor charging current Input capacitor discharge current Input capacitor bias discharge current Clamp cap charging current Clamp cap discharge current Clamp cap bias discharge current Output voltage L Output voltage H Black level output voltage Black level output voltage Output blanking voltage
(Except where noted otherwise, Ta=25C, VCC1=VCC2=12V, V13=4V, V14=4V, VDRV=4V, VCG= 0V, VBG=4V, V4=0V, VC-o=1V) 3
*
*
Contrast/drive input current Cutoff input current Spot killer voltage
Symbol VCC RIN VCGL VCGH ICGL ICGH VBGL VBGH IBGL IBGH VREF IICL+ IICLIICLB IOCL+ IOCLIOCLB VOL VOH VO VO VOBLK I13, 14 I26~28 IC-O VSPOT
Measurement conditions VCC1+VCC2, RL=
VCG=0V VCG=12V
VBG=0V VBG=12V VCG=0V VCG=0V VCG=4V VCG=0V VCG=0V VCG=4V VC-O=0V VC-O=10V VC-O=1V 7 VC-O=1V VBG=0V
*
Min. Typ. Max. Units 95 120 mA 100 0.8 1.2 V 1.6 2.0 V -1.5 -5.0 uA 0.01 1.0 uA 0.8 1.2 V 1.6 2.0 V -8 -11 uA 0.01 1.0 uA 2.0 V 450 750 uA -450 750 uA 750 nA 450 750 uA -450 -750 uA 750 nA 50 100 mV 7.0 7.5 V 1.2 V 20 250 mV 100 500 mV -125 -500 -1.0 10.6 -1.5 11.2 nA uA V
V13=V14=VDRV=0V~4V V
-O=0V~4V
MITSUMI
RGB Video Amplifier with OSD Input MM1381, 1382, 1383
AC Electrical Characteristics *14
Item Video amp gain Contrast attenuation 1 Contrast attenuation 2 Drive attenuation 1 Drive attenuation 2 Gain matching Gain change between amps Video amp distortion Video amp frequency bandwidth Video output rise time Video output fall time Video amp isolation 1 Video amp isolation 2 Blanking output rise time Blanking output fall time Blanking rise delay time Blanking fall delay time Back-porch clamping pulse width Symbol AV max. AV1 AV2 AVD1 AVD2 AVMAT AVMAT THD fBW tr tf VSEP1 VSEP2 tr-BLK tf-BLK trD-BLK tfD-BLK tpw
(Except where noted otherwise, Ta=25C, VCC1=VCC2=12V, V13=4V, V14=4V, VDRV=4V, VCG=0V, VBG=4V, V4=0V. For AC tests, adjust output pins 16, 20 and 23 to 4V by hand.) Measurement conditions V13=4V, VDRV=4V VIN=400mVP-P V13=2V V13=0.25V VDRV=2V VDRV=0.25V V13=VDRV=4V 8 V13=4V~2V 9 VO=1VP-P, f=10kHz V13=4V, VDRV=3V VO=4VP-P 10, 11 VO=4VP-P 10 VO=4VP-P 10 V13=4V 12 V13=4V 10, 12 VO=1VP-P 10 VO=1VP-P 10 VO=1VP-P VO=1VP-P 13 Min. Typ. Max. Units 7.5 10.0 V/V 16.9 20.0 dB -6 dB -40 dB -4.5 dB -11 dB 0.3 dB 0.2 dB 1 % 110 3.0 4.0 -70 -50 8 14 23 20 200 MHz nS nS dB dB nS nS nS nS nS
* *
* * * * * * *
*
OSD Electrical Characteristics
(Except where noted otherwise, Ta = 25C, VCC1=VCC2=12V, V13=4V, V14=4V, VDRV=4V, VCG=4V, VBG=4V, V4=4V, VC-o=1V) Measurement conditions Min. Typ. Max. Units 0.4 1.2 V 1.6 2.0 V 0.8 1.2 V 1.6 2.0 V -3.0 -5.0 uA 0.01 2.0 uA 85 175 mV 4.5 VP-P 50 30 % 2.0 % 3.5 % 4 nS 11 nS 11 nS 12 nS 4 nS 10 nS 6.5 nS 9 nS -70 dB -60 dB
Item Symbol Input voltage OSD L VOSDL Input voltage OSD H VOSDH OSD selection input voltage L V4L OSD selection input voltage H V4H OSD selection input current L I4L OSD selection input current H I4H OSD black level output voltage VOUT-OSD OSD output voltage VP-P VOSD-O OSD output VP-P attenuation VOSD-O Output adjustment between channels VOSD-OMAT Output fluctuation between channels VOSD-OMAT Video to OSD switching time tr-OSDSW OSD-to-video switching time tr-OSDSW Video to OSD transfer delay trD-OSDSW OSD-to-video transport delay tfD-OSDSW OSD rise time tr-OSD OSD fall time tf-OSD OSD rise delay time trD-OSD OSD fall delay time tfD-OSD Video isolation rate to OSD1 Vfeed1 Video isolation rate to OSD2 Vfeed2
V4=0V V4=12V VC-O=1V V14=4V, VDRV=2V V14=2V, VDRV=2V V14=4V, VDRV=2V V14=4V~2V, VDRV=2V V1=V2=V3=4V 15 V1=V2=V3=4V 15 V1=V2=V3=V13=V14=4V V1=V2=V3=V13=V14=4V V14=4V V14=4V V14=4V V14=4V V14=4V, V1=V2=V3=0V V14=4V, V1=V2=V3=0V
* *
MITSUMI Notes :
RGB Video Amplifier with OSD Input MM1381, 1382, 1383
*1 *2
Absolute maximum ratings are the limits over which the device may be damaged. Operating ratings are the conditions for device functioning, but they do not guarantee s specific performance limit. Refer to the electrical characteristics section for guaranteed specifications and measuring conditions. Guaranteed specifications apply only to the listed conditions. If the device does not operate within the listed measuring conditions, there may be deterioration depending on the performance characteristics. VCC supply pins 6, 9 and 22 must be connected as one externally in order to prevent internal damage during the VCC power supply on/switching cycle. Human model. Discharge via 1.5k from 100pF capacitor. The typical specified value is +25C, indicating the standard value of the most general parameter. The specified supply current is VCC1 and VCC2 0 input current for RL=[symbol]. Please refer to the measuring circuit. VCC2 supply current also depends on output load. VCC2 load current is 8mA in the measuring circuit for video output of 1V DC. Output voltage depends on the load resistor. The measuring circuit uses RL=390. Measure the gain difference between two amps. Vin=400mVP-P. Measure Av max. attenuation, and measure the quantitative difference between any two amps. Special test device on GND sealed PCB not requiring a socket. Adjust input frequency from 10MHz (AV max. reference value) to -3dB corner frequency. Measure the output level of two non-operational amps relative to the operating amp to check channel separation. 200nS minimum pulse width is guaranteed to 15kHz horizontal line. This limit is guaranteed at the design stage. When using a slower line speed, a clamp pulse with longer pulse width is required. 4V DC level is the AC output signal center voltage for AC testing. For example, when output is 4VP-P, the signal fluctuates between 2V DC and 6V DC. trosd=11nS and tfosd=4ns for V1=V2=V4-0V and video input of 0.7V. The video output waveform is the waveform shown in the timing diagram, inverted. Therefore, Trosd is actually rise time, and Tfosd is actually fall time in this situation. Solder for 10S.
*3 *4 *5 *6 *7 *8 *9 *10 *11 *12 *13 *14 *15 *16
MITSUMI
RGB Video Amplifier with OSD Input MM1381, 1382, 1383
Timing Diagram
Blanking transmission delay and Rise/fall time
VOH
BLANK GATE
VOL
1.3V tfD-BLK 1V tf-BLK 0.5V 0V
1.3V trD-BLK tr-BLK 0.5V
VIDEO OUT
Video
OSD, OSD
Video transmission delay and Switching time
VOH
OSD IN
VOL
VIDEO/OSD SWITCH
VOH 1.3V VOL trD-OSDS tr-OSDS tfD-OSDS tf-OSDS 2V 2V 1.3V
VIDEO OUT
1V
4VP-P
OSD transmission delay and Rise/fall time
VIDEO/OSD SWITCH
VOH VOL
VOH
OSD IN
VOL
1.3V trD-OSD tr-OSD
1.3V tfD-OSD tf-OSD 2V 2V
VIDEO OUT
1V
4VP-P
MITSUMI
RGB Video Amplifier with OSD Input MM1381, 1382, 1383
Measuring Circuit
MITSUMI
RGB Video Amplifier with OSD Input MM1381, 1382, 1383
Application Circuits

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