Dual RF PLL Frequency Synthesizers

文件：227.35 Kbytes 页数：20 Pages

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Dual RF PLL Frequency Synthesizers

文件：247.1 Kbytes 页数：20 Pages

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双通道、整数N分频0.5 GHZ/2.0 GHZ PLL

ADF4216/ADF4217/ADF4218均为双通道频率合成器，可以用来在无线接收机和发射机的上变频和下变频部分实现本振。这些器件可以为射频(RF)和中频(IF)部分提供LO。上述器件由低噪声数字鉴频鉴相器(PFD)、精密电荷泵、可编程参考分频器、可编程A和B计数器以及双模预分频器(P/P+1)组成。A（6位）、B（11位）计数器与双模预分频器(P/P+1)配合，可实现N分频器(N = BP+A)。此外，14位参考分频器（R分频器）允许PFD输入端的REFIN频率为可选值。如果频率合成器与外部环路滤波器和电压控制振荡器(VCO)一起使用，则可以实现完整的锁相环(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 页数：20 Pages

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Dual RF PLL Frequency Synthesizers

文件：227.35 Kbytes 页数：20 Pages

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Dual Low Power Frequency Synthesizers

文件：273.29 Kbytes 页数：24 Pages

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Dual Low Power Frequency Synthesizers

文件：290.02 Kbytes 页数：24 Pages

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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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