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MM1068 Datasheet(PDF) 5 Page - Mitsumi Electronics, Corp. |
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MM1068 Datasheet(HTML) 5 Page - Mitsumi Electronics, Corp. |
5 / 5 page MITSUMI No-adjustment Sync Separator MM1068 Application Circuits There is a momentary phase lag in the H. SYNC output vertical feedback interval. When using this IC for OSD timing, characters at the top of the screen may bend due to IC deviation. If this happens, change the resistance between Pins 13 and 14 as shown, and the bending will improve by several H from the top edge of the screen. Application Circuit 1 Application Circuit 2 Note 1 : 1. *1 NTSC PAL X CSB503F2 CSB500F40 R1 1.5k Ω 1.8k Ω R2 390 Ω C1 220pF C2 3300pF Note 2 : 1. *2 Input signal sync tip must be less than 1V for application circuit 1 Pin 7 external circuit. 2. The above 1. does not apply for application circuit 2 Pin 7 external circuit. Pin 1 is clamped at approximately 2.5V. 2. Resistors R1 and R2 should have precision of ±1%. 3. Capacitors C1 and C2 should have precision of ±5% and temperature characteristic of CH class. |
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