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MC13081X Datasheet(PDF) 11 Page - Motorola, Inc |
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MC13081X Datasheet(HTML) 11 Page - Motorola, Inc |
11 / 20 page MC13081X 11 MOTOROLA ANALOG IC DEVICE DATA APPLICATION INFORMATION The MC13081X is an integrated multisync color monitor processor. It combines horizontal/vertical deflection processing circuitry and video pre–amplifiers into a single device. The overall timebase section consists of two parts: horizontal and vertical. The horizontal timebase can be operated from 30 kHz to 64 kHz, and can be driven from TTL separate sync, composite sync, or a composite video signal. There are two PLLs which ensure proper timing throughout the whole system. The first PLL provides line locking of the horizontal sync signal with the built–in oscillator, while the second one maintains fixed timing with the horizontal flyback signal such that a stable display can be achieved. The vertical timebase section operates from 45 Hz to 100 Hz, and can receive various sync signals as the horizontal one does. This section consists of an oscillator and a ramp generator. Adjustments include linearity, ramp amplitude, and minimum free running frequency in the absence of sync signal. The video section has three 70 MHz bandwidth pre–amplifiers. The outputs of these amplifiers are uncommitted collector/emitter facilitating cascode configuration with subsequent stages. Controls include brightness and contrast. In addition, the voltage gain of each amplifier can be adjusted individually which provides flexibility in adjusting color correctness. Blanking and clamping signals are provided to the amplifiers internally from the timebase section. Additionally, a blanking signal can also be supplied externally. Separate power supply and ground pins are provided to the timebase and video section in order to minimize the cross interference between these two sections. C16 Figure 2. Application Circuit R9 R12 C1 C5 1 3 2 VR2 R10 52 VR3 C6 C7 51 VR4 48 47 55 5.0 Vref VR5 C8 R13 VR6 Vd C9 44 46 43 Vd R14 Va 29 Vd 56 39 38 34 33 31 30 40 37 32 C22 C23 C24 R19 R20 R21 Va 41 45 42 13 6 19 18 26 24 20 9 10 C10 C11 R15 R16 C12 C13 VR7 VR8 VR9 C14 C15 C18 C17 VR11 VR10 C19 R17 C20 C21 R18 4 5 23 25 27 28 11 12 C2 C3 R1 R2 R3 Vd R4 R5 R6 VR1 Vd R7 R8 Va Vd L1 L2 C25 C26 C27 C28 C29 AFC Video Gnd V–Sync H–Sync R G B MC13081X C4 C1–C3 2.2 µF C4,C6–C9,C13–C19,C22–C24,C29 100 nF C5,C20 10 nF C10 1.0 nF C11 100 nF C12 22 µF C21 10 nF C27 100 µF C26,C28 47 µF C30,C31 1.0 µF R1–R3,R17 75 Ω R4–R6 15 k Ω R7 3.9 M Ω R8 6.8 M Ω R9 8.2 k Ω R10 220 k Ω R12 220 k Ω R13 2.2 k Ω R14 470 Ω R15 5.6 k Ω R16 5.1 k Ω R18 10 k Ω R19–R21 330 Ω VR1,VR5–VR11 10 k Ω VR2 5.0 k Ω VR3 200 k Ω VR4 1.0 M Ω 8.0 Vdc Vertical TTL Sync Horizontal TTL Sync Channel 1 Video In Channel 2 Video In Channel 3 Video In Horizontal Freq Control Channel 3 Collector Out Channel 2 Collector Out Channel 1 Collector Out Channel 3 Clamp Channel 3 Emitter Out Channel 2 Clamp Channel 2 Emitter Out Channel 1 Clamp Channel 1 Emitter Out Timebase VCC2 Video VCC1 5.0 Vref L1 50 µH L2 50 µH 5.0 Vref |
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