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| MITSUMI Superimpose MM1166 Superimpose Monolithic IC MM1166 Outline This is a superimpose IC that supports S-VHS, with 1 circuit for Y signals and 1 circuit for C signals, with built-in character level and border level. The level is suppressed to eliminate the problem of spike noise generated when switching between input video signal and character signal. Features 1. 2. 3. 4. 5. Supports S-VHS Built-in character and border levels Frequency response Y : 10MHz Input/output signal Operating power supply voltage range C : 5MHz 1VP-P 4.5~5.5V Package SOP-8C (MM1166XF) Applications 1. TV 2. VCR 3. VCR with camera Block Diagram MITSUMI Superimpose MM1166 Pin Description Pin no. 1 Pin name Character switching Internal equivalent circuit diagram Pin Description Input pin for pulse that switches input signal and character signal High : character level output 2 YIN Luminance signal input pin 3 Border switching Input pin for pulse that switches input signal and border signal High : border level output 4 CIN Chroma signal input pin 5 6 GND COUT GND Chroma signal output pin 7 8 VCC YOUT Power supply pin Luminance signal output pin MITSUMI Superimpose MM1166 Absolute Maximum Ratings Item Storage temperature Operating temperature Power supply voltage Allowable loss (Ta=25C) Symbol TSTG TOPR VCC max. Pd Ratings -40~+125 -20~+75 7 300 Units C C V mW Electrical Characteristics Item Operating power supply voltage Consumption current Y subsystem Voltage gain Frequency characteristic Differential gain Differential phase Character level Edge level C subsystem Voltage gain Frequency characteristic Crosstalk 2 YC CY SW input voltage Character input H Character input L Edge input H Edge input L VCC ICC GV1 FC1 DG DP VCH VED GV2 FC2 CT1 CT2 (Except where noted otherwise, Ta=25C, VCC=5.0V, pulse level 0V, SG1~SG2: no signal, SWA, B : 1) Measurement circuit Measurement conditions Min. Typ. Max. Units 4.5 5.0 6.5 0 0 1.0 1.0 75 10 0 0 5.5 9.0 V mA dB dB Symbol TP5A TP5B TP5A SG1 : Sweep signal 1VP-P, 0.1MHz SG1 : Sweep signal 1VP-P 10MHz/0.1MHz SG1 : Staircase wave 1VP-P APL=10, 50, 90% SG1 : Staircase wave 1VP-P 1 SG1 : Staircase wave 1VP-P 1 -0.5 -1.0 -3.0 -3.0 70 5 -0.5 -1.0 +0.5 1.0 3.0 3.0 80 15 * * % deg IRE IRE dB dB dB dB V V V V TP7 TP7 TP5A SG2 : Sine wave 1VP-P, 0.1MHz SG2 : Sine wave 1VP-P, 5MHz/0.1MHz SG1 : Sine wave 1VP-P, 4.43MHz SWB : 2 SG2 : Sine wave 1VP-P, 4.43MHz SWA : 2 SG1 : Staircase wave 1VP-P SG1 : Staircase wave 1VP-P SG1 : Staircase wave 1VP-P SG1 : Staircase wave 1VP-P +0.5 1.0 -55 -55 0.7 * -65 -65 2.1 2.1 VIH1 VIL1 VIH2 VIL2 TP5A *3 *4 *5 *6 0.7 pulses *1 Input a 1VP-P staircase wave to SG1, and 5V as shown in Figure 1 to TP1 and TP3, and measure TP5A. TP1 waveform 0V 5V 0V TP5A waveform VCH 1VP-P TP3 waveform VED Figure 1 TP1, TP3, TP5A waveforms *2 Given input signal as V1 and output signal as V2, CT is obtained as follows. CT=20log V2 dB V1 Character level voltage *3 Character switching pin (Pin 1) highlevel voltage switching pin (Pin 1) low *4 5 Border switching pin (Pin 3) high level voltage *6 Border switching pin (Pin 3) low level voltage * MITSUMI Superimpose MM1166 Measuring Circuit |
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