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[原创] ADI ADF4372微波宽带(62.5 MHz-16 GHz)PLL频率合成方案

关键词:无线通信 频率合成器 5G通信 ADF4372

时间:2019-10-21 13:52:49       来源:中电网

ADI公司的ADF4372是微波宽带小数N和整数N的PLL频率合成器,RF输出频率范围为62.5 MHz至 16,000 MHz,高分辨率39位小数模数,典型杂散fPFD为-90dBc,1 kHz至100MHz的集成 RMS 抖动为38 fs,fPFD工作频率达250MHz,基准输入频率达600MHz,可编程的1/2/4/8/16/32或64分频输出,RF8x和RFAUX8x具有62.5 MHz至8,000MHz的输出,RF16x具有8,000MHz至16,000MHz 的输出,模拟和数字电源为3.3 V,VCO电源电压为3.3V和5V,RF输出静音功能,7mm×7mm 48端子LGA封装.主要用在无线基础设备(移动通信多载波全球系统(MC-GSM),5G),测试设备和仪表,时钟发生器,航天与国防.本文介绍了ADF4372主要特性,功能框图,以及评估板EV-ADF4372SD2Z主要特性,建立图,电路图,材料清单和PCB设计图.

The ADF4372 allows implementation of fractional-N or integer-N phase-locked loop (PLL) frequency synthesizers when used with an external loop filter and an external reference frequency. The wideband microwave voltage controlled oscillator (VCO) design allows frequencies from 62.5 MHz to 16 GHz to be generated.

The ADF4372 has an integrated VCO with a fundamental output frequency ranging from 4000 MHz to 8000 MHz. In addition, the VCO frequency is connected to a divide by 1, 2, 4, 8, 16, 32, or 64 circuit that allows the user to generate radio frequency (RF) output frequencies as low as 62.5 MHz at RF8x. A frequency multiplier at RF16x generates from 8 GHz to 16 GHz. RFAUX8x duplicates the frequency range of RF8x or permits direct acces..

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