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 RGB Video Amplifier for Monitors MM1203 MITSUMI Pin Description Pin no. Pin name Function Pin no. Pin name Function 1 VCC1 VCC1 15 B CLAMP (+) B clamp input (+) 2 CONTRAST CAP Contrast capacitor 16 B VIDEO OUT B video output 3 CONTRAST CAP Contrast capacitor 17 B CRAMP (-) B clamp input (-) 4 R VIDEO IN R video input 18 B DRIVE B drive 5 R CLAMP CAP R clamp capacitor 19 G CLAMP (+) G clamp input (+) 6 G VIDEO IN G video input 20 G VIDEO OUT G video output 7 GND GND 21 G CLMP (-) G clamp input (-) 8 G CALMP CAP G clamp capacitor 22 G DRIVE G drive 9 B VIDEO IN B video input 23 VCC2 VCC2 10 B CLAMP CAP B clamp capacitor 24 R CLAMP (+) R clamp input (+) 11 VREF Video input reference voltage 25 R VIDEO OUT R video output 12 CONTRAST Contrast control 26 R CLAMP (-) R clamp input (-) VCC1 27 R DRIVE R drive 28 VCC1 VCC1 13 VCC1 --------------------------------------------------------------------------------- 14 ------------------------------------------------------------------ CLAMP GATE ---------------------------------------------------------------------------------------------- Clamp gate input Absolute Maximum Ratings (Ta=25°C) Item Symbol Ratings Units Storage temperature TSTG -55~+150 °C Operating temperature TOPR -0~+70 °C Power supply voltage VCC V Pin input voltage VIN 13.5 GND =< VIN <= VCC V Video output current IO 28 mA Allowable loss Pd 2.5 W Electrostatic breakdown 9 2 kV Pin temperature 10 265 °C * * Recommended Operating Conditions Item Symbol Operating power supply voltage VCC (Ta=°C) Conditions Min. Typ. Max. Units 10.8 12.0 13.2 V RGB Video Amplifier for Monitors MM1203 MITSUMI DC Electrical Characteristics (Except where noted otherwise, Ta=25°C, VCC1=VCC2=12V, V12=6V, V14=0V, V15=2V, S1, 2, 3=OFF) Item Symbol Measurement conditions Consumption current ICC1 only VCC1 Video input reference voltage VREF Video input bias current IB Clamp gate input voltage L VCGL Clamp gate input voltage H VCGH Clamp gate input current L ICGL Clamp gate input current H Min. Typ. Max. Units 2.2 0.8 65 85 mA 2.4 2.6 V 5.0 20 µA 1.2 V 1.6 2.0 V V14=0V -0.5 -0.5 µA ICGH V14=12V 0.005 1.0 µA Clamping capacitor charge current ICL+ V5, 8, 10=0V 500 850 µA Clamping capacitor discharge current ICL- V5, 8, 10=5V -500 -850 µA Video output voltage L VOL V5, 8, 10=0V Video output voltage H VOH V5, 8, 10=5V Video output offset difference 1 VOF1 Video output offset difference 2 VOF2 AC Electrical Characteristics 0.9 8.2 V15=2V *2 V15=4V 2 * 1.25 8.9 V V ±0.5 ±50 mV ±0.5 ±50 mV (Except where noted otherwise, Ta=25°C, VCC1=VCC2=12V, V12=12V, V14=0V, V15=4V, fin=10kHz, S1, 2, 3=ON) Item Symbol Measurement conditions Min. Typ. Max. Units Video amp gain AV VIN=560mVP-P 4.5 6.0 -12.5 -10 V/V Gain attenuation 1 A V1 V12=5V, VIN=560mVP-P Gain attenuation 2 A V2 V12=2V, VIN=560mVP-P -40 *3 V12=5V 3 4 * * V12=V12 *3 *5 0.5 1.0 dB 0.1 0.5 dB Gain matching AVMAT Gain fluctuation matching 1 AVM1 Gain fluctuation matching 2 AVM2 Video amp distortion THD Video amp frequency bandwidth fBW Output rise time tr Output fall time tf Crosstalk 1 VSEP1 Crosstalk 2 VSEP2 LOW V12=3V, VOUT=1VP-P VIN=100mVrms *6 *7 V =4V *6 V =4V *6 f=10kHz, V =1V *8 f=10kHz, V =1V *6 *8 70 -7.5 dB dB 0.3 dB 0.5 % 120 MHz OUT P-P 5 µS OUT P-P 7 µS -65 dB -46 dB IN IN P-P P-P 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 1.5kΩ from 100pF capacitor. 10 Solder for 10 seconds. * * * * * * * * * * MITSUMI Measuring Circuit RGB Video Amplifier for Monitors MM1203 MITSUMI Measuring Circuit RGB Video Amplifier for Monitors MM1203 RGB Video Amplifier for Monitors MM1203 MITSUMI Characteristics Gain-Frequency Gain - Frequency (VOUT=4VP-P) 18 Gain (dB) 16 14 12 10 0 100k 1M 10M 100M Frequency (Hz) Attenuation-Contrast Voltage Attenuation - Contrast Voltag Attenuation (dB) 10 0 -10 -20 -30 -40 -50 -60 0 1 2 3 4 5 6 7 8 9 10 11 12 Contrast voltage (V) 1G