Superimpose MM1166 MITSUMI 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 Package SOP-8C (MM1166XF) Applications 1. TV 2. VCR 3. VCR with camera Block Diagram C : 5MHz 1VP-P 4.5~5.5V Superimpose MM1166 MITSUMI Pin Description Pin no. Pin name 1 Character switching Internal equivalent circuit diagram Pin Description Input pin for pulse that switches input signal and character signal High : character level output Luminance signal input pin 2 YIN 3 Border switching 4 CIN 5 GND GND 6 COUT Chroma signal output pin 7 VCC Power supply pin 8 YOUT Luminance signal output pin Input pin for pulse that switches input signal and border signal High : border level output Chroma signal input pin Superimpose MM1166 MITSUMI Absolute Maximum Ratings Item Symbol Ratings Units Storage temperature TSTG -40~+125 °C Operating temperature TOPR -20~+75 °C Power supply voltage VCC max. 7 V Allowable loss Pd 300 mW Electrical Characteristics (Except where noted otherwise, Ta=25°C, VCC=5.0V, pulse level 0V, SG1~SG2: no signal, SWA, B : 1) Item Symbol Operating power supply voltage Consumption current Y subsystem Voltage gain VCC ICC FC1 Differential gain Differential phase Character level Edge level C subsystem Voltage gain Frequency characteristic Crosstalk 2 Y C C Y SW input voltage Character input H Character input L Edge input H Edge input L DG DP VCH VED * P-P Measurement circuit Measurement conditions GV1 Frequency characteristic *1 Input a 1V (Ta=25°C) TP5A TP5B 4.5 5.0 6.5 5.5 9.0 V mA 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 0 +0.5 dB -1.0 0 1.0 dB -3.0 -3.0 70 5 1.0 1.0 75 10 3.0 3.0 80 15 % deg IRE IRE -0.5 -1.0 0 0 +0.5 1.0 dB dB -65 -65 -55 -55 dB dB * * TP5A GV2 FC2 TP7 SG2 : Sine wave 1VP-P, 0.1MHz SG2 : Sine wave 1VP-P, 5MHz/0.1MHz CT1 CT2 TP7 TP5A SG1 : Sine wave 1VP-P, 4.43MHz SWB : 2 SG2 : Sine wave 1VP-P, 4.43MHz SWA : 2 VIH1 VIL1 VIH2 VIL2 Min. Typ. Max. Units SG1 : Staircase wave 1VP-P SG1 : Staircase wave 1VP-P SG1 : Staircase wave 1VP-P SG1 : Staircase wave 1VP-P TP5A *34 *5 *6 * 2.1 0.7 2.1 0.7 V V V V staircase wave to SG1, and pulses as shown in Figure 1 to TP1 and TP3, and measure TP5A. 5V TP1 waveform 0V 5V TP3 waveform 0V TP5A waveform 1VP-P VCH VED Figure 1 TP1, TP3, TP5A waveforms *2 Given input signal as V1 and output signal as V2, C T CT=20log V2 dB V1 Character switching pin (Pin 1) high level voltage *34 Character switching pin (Pin 1) low level voltage * 5 Border switching pin (Pin 3) high level voltage *6 Border switching pin (Pin 3) low level voltage * is obtained as follows. MITSUMI Measuring Circuit Superimpose MM1166