浅谈ADI ADF4150HV 4.4 GHz频率合成方案

时间:2011-08-28

  ADI 公司的ADF4150HV是集成了高压(6V到30V)电荷泵的4.4 GHz分数N或整数N的频率合成器,RF带宽到4.4GHz,输出分频可以是1/2/3/6/8或16,合成器电源3.0V到3.6V,可编程输出功率电平,主要用在无线基础设备,微波点对点/点对多点无线电,VSAT无线电,测试设备,军用和雷达等。本文介绍ADF4150HV主要特性, 功能方框图, 超宽带PLL电路图和微波PLL电路图以及ADuC70XX, ADSP-21xx和ADF4150HV连接框图。  ADI将创新、业绩和卓越作为企业的文化支柱,并基此成长为该技术领域持久高速增长的企业之一。ADI公司是业界广泛认可的数据转换和信号处理技术的供应商,拥有遍布世界各地的60,000客户,涵盖了全部类型的电子设备制造商。作为业界40多年的高性能模拟集成电路(IC)制造商,ADI的产品广泛用于模拟信号和数字信号处理领域。公司总部设在美国马萨诸塞州诺伍德市,设计和制造基地遍布。ADI公司的股票在纽约证券交易所上市,并被纳入标准普尔500指数(S&P 500 Index )。

  ADI生产的数字信号处理芯片(DSP:Digital Singal Processor),代表系列有 ADSP Sharc 211xx (低端领域),ADSP TigerSharc 101,201,…(高端领域),ADSP Blackfin 系列(消费电子领域)。

  The ADF4150HV is a 4.4 GHz fractional-N or integer-N frequency synthesizer with an integrated high voltage charge pump. The synthesizer can be used to drive external wide band VCOs directly, removing the need for operational amplifiers to achieve higher tuning voltages. This simplifies design and reduces cost while improving phase noise, as active filter topologies tend to degrade phase noise when compared to passive filters.

  The VCO frequency can be pided-by 1/2/4/8 or 16 to allow the user to generate RF output frequencies as low as 31.25 MHz. For applications that require isolation the RF output stage can be muted. The mute function is both pin and software controllable.

  Control of all the on-chip registers is through a simple 3-wire interface. The charge pump operates off a supply ranging from 6V to 30V, while the rest of the device operates from 3.0 V to 3.6 V. The ADF4150HV can be powered down when not in use.

  ADF4150HV主要特性:

  Fractional-N synthesizer and integer-N synthesizer

  High voltage charge pump: 6 V to 30 V

  RF bandwidth to 4.4 GHz

  Programmable pide-by-1/2/4/8 or 16 outputs

  3.0 V to 3.6 V synthesizer power supply

  Programmable dual-modulus prescaler of 4/5 or 8/9

  Programmable output power level

  Programmable charge pump currents

  RF output mute function

  3-wire serial interface

  Analog and digital lock detect

  ADF4150HV应用:

  Wireless infrastructure

  Microwave Point to Point/Multi-Point Radios

  VSAT Radios

  Test equipment

  Military & Radar applications

  Private/Land Mobile Radio

  图1.ADF4150HV功能方框图

  图2.采用ADF4150HV和VCO的超宽带PLL电路图

  图3.采用ADF4150HV的16GHz 微波PLL电路图

  图4. ADuC70XX和ADF4150HV连接框图

  图5. ADSP-21xx和ADF4150HV连接框图

  详情请见:

  https://www.analog.com/static/imported-files/data_sheets/ADF4150HV.pdf


  
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