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| MITSUMI Sync Detector MM1069 Sync Detector Monolithic IC MM1069 Outline This IC is a sync detection circuit for obtaining the best reception state on VCR and TV channel selection systems. A system with high detection precision and no adjustment required can be configured due to the PLL format using a ceramic resonator. It can also be used in OSD circuits for blue-back switching and the like. Features 1. Can be used in VCR and TV channel selection systems, and also for blue-back, etc. 2. High precision due to use of PPL format 3. Ceramic resonator means no adjustment required 4. Ceramic resonator can be selected for use in either PAL or NTSC 5. Power supply voltage VCC=5V Package SIP-10A (MM1069XS) Applications 1. TV 2. VCR 3. Other video equipment Block Diagram MM1069XS MITSUMI Sync Detector MM1069 Pin Description Pin no. Pin name 1 CR Internal equivalent circuit diagram Pin no. Pin name 6 VIDEO IN Internal equivalent circuit diagram 2 GAIN 7 OSC IN1 3 SYNC.DET 8 OSC IN2 4 5 GND OSC OUT 9 LPF 10 VCC 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 7 500 Units C C V mW MITSUMI Sync Detector MM1069 Electrical Characteristics Item Operating power supply voltage Consumption current 32fH VCO free-running frequency NTSC Horizontal sync signal acquisition range NTSC 32fH VCO free-running frequency PAL Horizontal sync signal acquisition range PAL LPF pin DC level Sync separation level Sync discrimination output voltage L Sync discrimination output voltage H Sync discrimination switching voltage L Sync discrimination switching voltage H (Except where noted otherwise, Ta=25C, VCC=5.0V, X=CSB503F2, R=390 [OHM], C=3300pF, SW1=OFF) Measurement circuit VCC Id TP3 VIN TP3 VIN TP4 VIN TP2 TP2 TP1 TP1 VIN : signal 1 Symbol VCC Id fO1 fCAP fO2 fCAP2 VLPF VSEPA VL4 VH4 VTHL4 VTHH4 Measurement conditions Min. Typ. Max. Units 4.7 5.0 7.5 5.3 V 11.0 mA 497.1 503.5 509.9 kHz *1 *2 300 500 Hz X=CSB500F40, R=200OHM, C=4700pF X=CSB500F40, R=200OHM, C=4700pF, VIN : signal 1 SW1 : ON VIN : staircase wave 1VP-P VIN : staircase wave 1VP-P VIN : no input signal TP1 : DC voltage 5V TP1 : DC voltage 0V 493.6 500.0 506.4 kHz 300 0.9 500 1.4 50 0.2 4.8 5.0 2.3 3.0 2.6 3.3 1.9 80 0.4 Hz V mV V V V V ** *4 *5 1 3 20 *5 *5 *5 Low High 2.0 2.7 *1 Signal 1 : Pulse signal with 0.3V amplitude and pulse width 4.7S Signal 1 waveform 4.7uS *2 Measuring horizontal sync signal pull-in range for NTSC Adjust signal 1 frequency toward 15.734kHz. The measurement value is the smaller of signal 1 frequency when TP2 level switches from high to low, and the difference from 15.734. Measuring horizontal sync signal for *3 Adjust signal 1 frequency toward pull-in rangeThe PAL 15.625kHz. measurement value is the smaller of signal 1 frequency when TP2 level switches from high to low, and the difference from 15.625. Measuring sync separation level *4 Gradually lower staircase wave signal sync tip level, and measure sync tip level when TP2 level switches from low to high. *5 Sync discrimination switching voltage measurement Gradually change the voltage impressed on TP1, and measure TP5 voltage when TP2 output switches. MITSUMI Sync Detector MM1069 Measuring Circuit Note : 1 NTSC X R C CSB503F2 390 3300pF PAL CSB500F40 220 4700pF * Application Circuits Application Circuit 1 MITSUMI Sync Detector MM1069 Application Circuit 2 Note 1 : 1. 1 NTSC X R C CSB503F2 390 3300pF PAL CSB500F40 220 4700pF * Note 2 : 2 1. Input signal sync tip must be less than 1V for application circuit 1 Pin 10 external circuit. 2. The above 1. does not apply for application circuit 2 Pin 10 external circuit. Pin 10 is clamped at approximately 2.5V. * |
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