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ML145106

器件名称: ML145106
功能描述: PLL Frequency Synthesizer CMOS
文件大小: 389.29KB 共8页
生产厂商: LANSDALE
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简  介: ML145106 PLL Frequency Synthesizer CMOS INTERFACES WITH DUAL–MODULUS PRESCALERS Legacy Device: Motorola MC145106 The ML145106 is a phase–locked loop (PLL) frequency synthesizer constructed in CMOS on a single monolithic structure. This synthesizer finds applications in such areas as AM radio, shortwave, amateur radio, CB and FM transceivers. The device contains an oscillator/amplifier, a 210 or 211 divider chain for the oscillator signal, a programmable divider chain for the input signal, and a phase detector. The ML145106 has circuitry for a 10.24 MHz oscillator or may operate with an external signal. The circuit provides a 5.12 MHz output signal, which can be used for frequency tripling. A 29 programmable divider divides the input signal frequency for channel selection. The inputs to the programmable divider are standard ground–to–supply binary signals. Pull–down resistors on these inputs normally set these inputs to ground enabling these programmable inputs to be controlled from a mechanical switch or electronic circuitry. The phase detector may control a VCO and yields a high level signal when input frequency is low, and a low level signal when input frequency is high. An out–of–lock signal is provided from the on–chip lock detector with a “0” level for the out–of–lock condition. Single Power Supply Wide Supply Range: 4.5 to 12 V Provision for 10.24 MHz Crystal Oscillator 5.12 MHz Output Programmable Division Binary Input Selects up to 29 On–Chip Pull–Down Resi……
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