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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 ------------------------------------------------------------------------------------------------------------------------------------------------ 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 ---------------------------------------------------------------------------------------------- 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=25C) Symbol TSTG TOPR VCC VIN IO Pd Ratings -55~+150 -0~+70 13.5 < GND = VIN < 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=25C, VCC1=VCC2=12V, V12=6V, V14=0V, V15=2V, S1, 2, 3=OFF) Symbol ICC1 VREF IB VCGL VCGH ICGL ICGH ICL+ ICLVOL VOH VOF1 VOF2 V14=0V V14=12V V5, 8, 10=0V V5, 8, 10=5V V5, 8, 10=0V V5, 8, 10=5V V15=2V 8.2 500 0.8 Measurement conditions only VCC1 2.2 Min. Typ. Max. Units 65 2.4 5.0 1.2 1.6 -0.5 0.005 850 0.9 8.9 0.5 0.5 50 50 1.25 -500 -850 2.0 -0.5 1.0 85 2.6 20 mA V A V V A A A A V V mV mV *2 V15=4V 2 * AC Electrical Characteristics Item Video amp gain Gain attenuation 1 Gain attenuation 2 Gain matching Gain fluctuation matching 1 Gain fluctuation matching 2 Video amp distortion Video amp frequency bandwidth Output rise time Output fall time Crosstalk 1 Crosstalk 2 (Except where noted otherwise, Ta=25C, VCC1=VCC2=12V, V12=12V, V14=0V, V15=4V, fin=10kHz, S1, 2, 3=ON) Symbol AV AV1 AV2 AVMAT AVM1 AVM2 THD fBW tr tf VSEP1 VSEP2 Measurement conditions VIN=560mVP-P V12=5V, VIN=560mVP-P V12=2V, VIN=560mVP-P Min. Typ. Max. Units 4.5 -12.5 6.0 -10 -40 0.5 0.1 0.3 0.5 70 120 5 7 -65 -46 1.0 0.5 -7.5 V/V dB dB dB dB dB % MHz S S dB dB *3 V12=5V 3 4 ** V12=V12LOW 3 5 ** V12=3V, VOUT=1VP-P *6 *7 VOUT=4VP-P 6 * VOUT=4VP-P 6 * f=10kHz, VIN=1VP-P 8 * f=10kHz, VIN=1VP-P 6 8 ** VIN=100mVrms Notes: 1 VCC power supply pins 1, 13, 23 and 28 are connected to each other externally. 2 Measure offset voltage between any two amps. 3 Measure gain difference between any two amps. VIN=1VP-P 4 Measure attenuation amount relative to Av max., and quantify the difference between any two amps. 5 The voltage at which V12 low is -40dB relative to AV max. for attenuation. 6 Mount on printed board with ground shield on both sides. 7 -3dB cutoff frequency from video amp gain. 8 Input a signal to any amp and terminate input for the remaining two amps (use resistor that corresponds to signal source load), then measure output. 9 Human model. Discharge via 1.5k from 100pF capacitor. 10 Solder for 10 seconds. * * * * * * * * * * MITSUMI RGB Video Amplifier for Monitors MM1203 Measuring Circuit MITSUMI RGB Video Amplifier for Monitors MM1203 Measuring Circuit MITSUMI RGB Video Amplifier for Monitors MM1203 Characteristics Gain-Frequency Gain - Frequency (VOUT=4VP-P) 18 16 Gain (dB) 14 12 10 0 100k 1M 10M 100M 1G Frequency (Hz) Attenuation-Contrast Voltage Attenuation - Contrast Voltag 10 Attenuation (dB) 0 -10 -20 -30 -40 -50 -60 0 1 2 3 4 5 6 7 8 9 10 11 12 Contrast voltage (V) |
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