Sync Detector MM1069 MITSUMI 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 Sync Detector MM1069 MITSUMI Pin Description Pin no. Pin name Internal equivalent circuit diagram Pin no. Pin name 1 CR 6 VIDEO IN 2 GAIN 7 OSC IN1 3 SYNC.DET 8 OSC IN2 4 GND 9 LPF 5 OSC OUT 10 VCC Absolute Maximum Ratings Internal equivalent circuit diagram (Ta=25°C) 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 500 mW Sync Detector MM1069 MITSUMI Electrical Characteristics (Except where noted otherwise, Ta=25°C, VCC=5.0V, X=CSB503F2, R=390 [OHM], C=3300pF, SW1=OFF) Measurement Item Symbol Operating power supply voltage VCC VCC Consumption current Id Id fO1 TP3 fCAP VIN fO2 TP3 fCAP2 VIN LPF pin DC level VLPF TP4 Sync separation level VSEPA VIN VIN : staircase wave 1VP-P VL4 TP2 VIN : staircase wave 1VP-P VH4 TP2 VIN : no input signal VTHL4 TP1 TP1 : DC voltage 5V Low VTHH4 TP1 TP1 : DC voltage 0V High 32fH VCO free-running frequency NTSC Horizontal sync signal acquisition range NTSC 32fH VCO free-running frequency PAL Horizontal sync signal acquisition range PAL Sync discrimination output voltage L Sync discrimination output voltage H Sync discrimination switching voltage L Sync discrimination switching voltage H Measurement conditions circuit Min. Typ. Max. Units 4.7 5.0 5.3 V 7.5 11.0 mA 497.1 503.5 509.9 kHz VIN : signal 1 *1 *2 300 X=CSB500F40, R=200OHM, Hz 493.6 500.0 506.4 kHz C=4700pF X=CSB500F40, R=200OHM, C=4700pF, VIN : signal 1 500 1 3 * * SW1 : ON *4 *5 *5 300 500 Hz 0.9 1.4 1.9 V 20 50 80 mV 0.2 0.4 V 4.8 5.0 V *5 2.0 2.3 2.6 V *5 2.7 3.0 3.3 V *1 Signal 1 : Pulse signal with 0.3V amplitude and pulse width 4.7µS 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 pull-in range for PAL *3 Adjust signal 1 frequency toward 15.625kHz. The 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. Sync Detector MM1069 MITSUMI Measuring Circuit * Note : 1 Application Circuits Application Circuit 1 NTSC PAL X CSB503F2 CSB500F40 R 390Ω 220Ω C 3300pF 4700pF Sync Detector MM1069 MITSUMI Application Circuit 2 * * Note 1 : 1. 1 NTSC PAL X CSB503F2 CSB500F40 R 390Ω 220Ω C 3300pF 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.