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MITSUMI
RGB Video Amplifier for Monitors MM1203
RGB Video Amplifier for Monitors
Monolithic IC MM1203
Outline
This IC is a wideband video amplifier system developed for high resolution RGB color monitors. In addition to the three matched video amps, it has three gate control differential input black level comparators for luminance adjustment, and three matched attenuator circuits for contrast adjustment. Each video amp has maximum gain setting (AV=4~10) and a drive pin for trimming. The reference voltage supply for video input is built in.
Features
1. Three built-in wideband video amps (70MHz @ -3dB) 2. Current consumption 65mA typ. 3. Matched (±0.5dB) contrast adjustment attenuators built in 4. Built-in luminance adjustment comparators using external gate control 5. Gain of each video amp controlled independently 6. Built-in video input reference voltage 7. Low impedance output driver
Package
DIP-28B (MM1203ND)
Applications
1. Display monitors
Block Diagram
MITSUMI
RGB Video Amplifier for Monitors MM1203
Pin Description
Pin no. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Pin name VCC1 CONTRAST CAP CONTRAST CAP R VIDEO IN R CLAMP CAP G VIDEO IN GND G CALMP CAP B VIDEO IN B CLAMP CAP VREF CONTRAST VCC1 CLAMP GATE
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Function VCC1 Contrast capacitor Contrast capacitor R video input R clamp capacitor G video input GND G clamp capacitor B video input B clamp capacitor Video input reference voltage Contrast control VCC1
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Pin no. 15 16 17 18 19 20 21 22 23 24 25 26 27 28
Pin name B CLAMP (+) B VIDEO OUT B CRAMP (-) B DRIVE G CLAMP (+) G VIDEO OUT G CLMP (-) G DRIVE VCC2 R CLAMP (+) R VIDEO OUT R CLAMP (-) R DRIVE VCC1
Function B clamp input (+) B video output B clamp input (-) B drive G clamp input (+) G video output G clamp input (-) G drive VCC2 R clamp input (+) R video output R clamp input (-) R drive VCC1
Clamp gate input
Absolute Maximum Ratings
Item Storage temperature Operating temperature Power supply voltage Pin input voltage Video output current Allowable loss
(Ta=25°C) Symbol TSTG TOPR VCC VIN IO Pd Ratings -55~+150 -0~+70 13.5 < VIN < GND = = VCC 28 2.5 2 265 (Ta=°C) Conditions Min. Typ. Max. Units 10.8 12.0 13.2 V Units °C °C V V mA W kV °C
Electrostatic breakdown 9
*
Pin temperature 10
*
Recommended Operating Conditions
Item Operating power supply voltage Symbol VCC
MITSUMI
RGB Video Amplifier for Monitors MM1203
DC Electrical Characteristics
Item Consumption current Video input reference voltage Video input bias current Clamp gate input voltage L Clamp gate input voltage H Clamp gate input current L Clamp gate input current H Clamping capacitor charge current Clamping capacitor discharge current Video output voltage L Video output voltage H Video output offset difference 1 Video output offset difference 2
(Except where noted otherwise, Ta=25°C, VCC1=VCC2=12V, V12=6V, V14=0V, V15=2V, S1, 2, 3=OFF) Symbol ICC1 VREF IB VCGL VCGH ICGL.