Dual RF PLL Frequency Synthesizers

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Dual RF PLL Frequency Synthesizers

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雙通道、整數(shù)N分頻0.5 GHZ/2.0 GHZ PLL

ADF4216/ADF4217/ADF4218均為雙通道頻率合成器，可以用來在無線接收機(jī)和發(fā)射機(jī)的上變頻和下變頻部分實(shí)現(xiàn)本振。這些器件可以為射頻(RF)和中頻(IF)部分提供LO。上述器件由低噪聲數(shù)字鑒頻鑒相器(PFD)、精密電荷泵、可編程參考分頻器、可編程A和B計(jì)數(shù)器以及雙模預(yù)分頻器(P/P+1)組成。A（6位）、B（11位）計(jì)數(shù)器與雙模預(yù)分頻器(P/P+1)配合，可實(shí)現(xiàn)N分頻器(N = BP+A)。此外，14位參考分頻器（R分頻器）允許PFD輸入端的REFIN頻率為可選值。如果頻率合成器與外部環(huán)路濾波器和電壓控制振蕩器(VCO)一起使用，則可以實(shí)現(xiàn)完整的鎖相環(huán)(PLL)。 ? ADF4216: 550 MHz/1.2 GHz\n? ADF4217: 550 MHz/2.0 GHz\n? ADF4218: 550 MHz/2.5 GHz\n? 2.7 V to 5.5 V Power Supply\n? Selectable Charge Pump Currents\n? Selectable Dual Modulus Prescaler\n? IF: 8/9 or 16/17\n? RF: 32/33 or 64/65\n? 3-Wire Serial Interface\n? Power-Down Mode;

ADI

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Dual RF PLL Frequency Synthesizers

文件：247.1 Kbytes 頁數(shù)：20 Pages

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Dual RF PLL Frequency Synthesizers

文件：227.35 Kbytes 頁數(shù)：20 Pages

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Dual Low Power Frequency Synthesizers

文件：273.29 Kbytes 頁數(shù)：24 Pages

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Dual Low Power Frequency Synthesizers

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Low Power Dual RF/IF Integer-N PLL

The ADF4217L Synthesizer IC when combined with a VCO and loop filter forms a complete phased locked loop (PLL). This solution from ADI creates state-of-the-art LO's (local oscillator) for the upconversion and downconversion of RF signals in Wireless applications. The PLL consists of a low noise digi ? Low Phase Noise\n\n? Separate Vp allows extended tuning range \n\n? 2.6V to 3.3V single Power supply\n\n? TSSOP and chip scale package available\n\n\n\n? Selectable dual modulus prescaler values\n\n? Programmable charge pump currents \n\n? Low current consumption (7.0mA \ntotal Idd)\n\n? 1.8V Logi;

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