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| MITSUMI RGB Video Amplifier for Monitors MM1375 RGB Video Amplifier for Monitors Monolithic IC MM1375 Outline This IC is a wideband RGB video amplifier with DC control, developed for use in monitors. It has a differential input comparator for brightness adjustment, and three matched DC control attenuators for contrast adjustment. All DC control input is high impedance, and the operating range is set for easy interface with serial bus control systems, at 0~4V. Also, the building-in blanking circuit clamps video output to less than 0.2V during blanking, enabling blanking on the CRT cathode. Features 1. 2. 3. 4. 5. 6. 7. 8. Low power consumption (VCC=8V, ICC=68mA) Smaller capacity for clamping capacitor (0.1F) High band video amp 100MHZ @-3dB Matched (0.1dB) contrast adjustment attenuators built in Built-in cutoff and brightness adjustment input comparators using external gate control Built-in high input impedance DC contrast control, 0~4V Output blanking function Output can drive hybrid or discrete CRT driver directly Package SDIP-22A Applications 1. 2. 3. 4. High resolution RGB CRT monitors AGC amps for video Gain and DC offset control high bandwidth amps Interface amps for LCD or CCD systems MITSUMI RGB Video Amplifier for Monitors MM1375 Block Diagram MITSUMI RGB Video Amplifier for Monitors MM1375 Pin Description Pin no. 1 3 6 Pin name R VIDEO IN G VIDEO IN B VIDEO IN Internal equivalent circuit diagram 2 5 7 R CLAMP CAP G CLAMP CAP B CLAMP CAP 8 4, 18 9 22 15 12 VCC1 GND CONTRAST R DRIVE G DRIVE B DRIVE 10 11 BLANK GATE CLAMP GATE 20 17 14 R VIDEO OUT G VIDEO OUT B VIDEO OUT 19 VCC2 21 16 13 R CUT-OFF ADJ G CUT-OFF ADJ B CUT-OFF ADJ MITSUMI RGB Video Amplifier for Monitors MM1375 Absolute Maximum Ratings Item Storage temperature Operating temperature Power supply voltage 1 Power supply voltage 2 Input voltage range Video output current Allowable loss Electrostatic breakdown Pin temperature Note : Solder for 10S (Ta=25C) Symbol TSTG TOPR VCC1 VCC2 VIN IO Pd Ratings -40~+125 -20~+80 10 15 GND < VIN < VCC1 = = 28 1.6 2 265 Units C C V V V mA W kV * C Recommended Operating Conditions Item Operating power supply voltage 1 Operating power supply voltage 2 Symbol VCC1 VCC2 (Ta=25C) Min. Typ. Max. Units 7.6 7.6 8.0 8.4 12.6 V V DC Electrical Characteristics Item Power supply current Video amp input voltage Video input resistance Clamp gate input voltage L Clamp gate input voltage H Clamp gate input current L Clamp gate input current H Input charging current Input discharge current Clamp cap charge current Clamp cap discharge current Clamp cap bias discharge current Blanking gate input voltage L Blanking gate input voltage H Blanking gate input current L Blanking gate input current H Video output voltage L Video output voltage H Black level output voltage Black level output voltage Output blanking voltage Contrast control input current Drive control input current Cutoff control input current (Except where noted otherwise, Ta=25C, VCC1=8V, VCC2=8~12V, V9=4V, V10=4V, V11=0V, VC-o=1.0V, VDRV=4V) Symbol ICC1 VB RB VCGL VCGH ICGL ICGH IIN+ IINICL+ ICLICLB VBGL VBGH IBGL IBGH VOL VOH VO VO VOBLK I9 IDBV IC-O Measurement conditions VCC1+VCC2 Min. Typ. Max. Units 68 80 mA 2.2 V 100 k 0.8 1.2 V 1.6 2.0 V -0.5 -5.0 A 0.01 1.0 A 0.75 1.0 mA -0.75 -1.0 mA 0.75 1.0 mA -0.75 -1.0 mA 50 nA 0.8 1.2 V 1.6 2.0 V -1.0 -5.0 A 0.01 1.0 A 0.15 0.5 V 5.0 5.5 V 1.0 V 100 mV 100 300 mV 190 A 190 A -500 nA V11=0V V11=8V V10=0V V10=8V VC-O=0V VC-O=6V VC-O=1V VC-O=1V V10=0V V9=4V VDBV=4V VC-O=0~4V MITSUMI RGB Video Amplifier for Monitors MM1375 AC Electrical Characteristics Item Video amp gain Gain attenuation 1 Gain attenuation 2 Drive control range Gain matching Gain change between amps Video amp distortion Video amp frequency bandwidth Output rise time Output fall time Video amp isolation 1 (fIN=10kHz) Video amp isolation 2 (fIN=10MHz) Blanking output fall time Blanking output fall time Back-porch clamping pulse width (Except where noted therwise, Ta=25C, VCC1=8V, VCC2=8~12V) Symbol AV max. AV1 AV2 AVDRV AVMAT AVMAT THD fBW tr tf VSEP1 VSEP2 tr tf tpw Measurement conditions VIN=635mVP-P, V9=4V VDRV=4V VIN=635mVP-P, V9=2V VIN=635mVP-P, V9=0.5V VDRV=0~4V, V9=4V V9=VDRV=4V V9=4~2V VOUT=1VP-P VOUT=4VP-P, V9=VDRV=4V VOUT=4VP-P VOUT=4VP-P V9=4V V9=4V VOUT=1VP-P VOUT=1VP-P Min. Typ. Max. Units 5.4 14.6 7.0 16.9 -6 -38 6 0.3 0.1 1 100 3 4 -70 -50 7 7 200 V/V dB dB dB dB dB dB % MHz nS nS dB dB nS nS nS MITSUMI RGB Video Amplifier for Monitors MM1375 Application Circuits Characteristics Gain vs Frequency 18 16 14 12 10 8 6 4 2 0 0.1 1 10 100 1000 Pulse reaction Gain (dB) tr=2.7nS tr=4.3nS X : 10nS/div Y : 1v/div Frequency (Hz) |
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