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AD9857:  CMOS 200 MSPS、14位正交数字上变频器

产品详情

AD9857在单芯片上集成了一个高速直接数字频率合成器(DDS)、一个高性能、高速14位数模转换器(DAC)、时钟乘法器电路、数字滤波器以及其它DSP功能,构成一个完整的正交数字上变频器。它主要用作通用I/Q调制器与捷变上变频器、单音DDS或插值DAC,适合视成本、尺寸、功耗和动态性能为关键因素的通信应用。

特点和优势

  • 200 MHz内部时钟速率
  • 14位数据路径
  • 出色的动态性能:80 dB SFDR (65 MHz ± 100 kHz AOUT)
  • 4×至20×可编程基准时钟乘法器
  • 基准时钟乘法器锁相环(PLL)锁定检测指示器
  • 内部32位正交DDS
  • FSK功能
  • 8位输出振幅控制
  • 单引脚省电功能
  • 四种可编程、引脚可选信号方案
  • SIN(x)/x校正(反SINC函数)
  • 简化的控制接口
    10 MHz串行、双线式或三线式
    SPI®兼容

AD9857功能框图

文档

快讯名称 内容类型 文件类型
AD9857: CMOS 200 MSPS 14-Bit Quadrature Digital Upconverter Data Sheet  (Rev C, 05/2004) (pdf, 1065 kB) 产品数据手册 PDF
AN-0996: 在点对点微波发射系统中使用正交数字上变频器(QDUC)的优势  (pdf, 388 kB) 应用笔记 PDF
AN-0996: The Advantages of Using a Quadrature Digital Upconverter (QDUC) in Point-to-Point Microwave Transmit Systems  (pdf, 219 kB) 应用笔记 PDF
AN-924: 数字正交调制器增益  (pdf, 105 kB) 应用笔记 PDF
AN-924: Digital Quadrature Modulator Gain  (pdf, 105 kB) 应用笔记 PDF
AN-922: 数字脉冲整形滤波器基础知识  (pdf, 1582 kB) 应用笔记 PDF
AN-922: Digital Pulse-Shaping Filter Basics  (pdf, 1582 kB) 应用笔记 PDF
AN-851: 一种WiMax双下变频IF采样接收机设计方案[中文版]  (pdf, 421 kB) 应用笔记 PDF
AN-851: A WiMax Double Downconversion IF Sampling Receiver Design  (pdf, 262 kB) 应用笔记 PDF
AN-837: 基于DDS的时钟抖动性能与DAC重构滤波器性能的关系[中文版]  (pdf, 416 kB) 应用笔记 PDF
AN-837: DDS-Based Clock Jitter Performance vs. DAC Reconstruction Filter Performance  (pdf, 313 kB) 应用笔记 PDF
AN-823: 时钟应用中的直接数字频率合成器[中文版]  (pdf, 303 kB)
基于直接数字频率合成器的时钟系统的时间抖动
应用笔记 PDF
AN-823: Direct Digital Synthesizers in Clocking Applications Time  (pdf, 115 kB)
Jitter in Direct Digital Synthesizer-Based Clocking Systems
应用笔记 PDF
AN-237: 放大器直接数字频率合成的DAC选型器应用漫谈  (pdf, 1156 kB) 应用笔记 PDF
AN-237: Choosing DACs for Direct Digital Synthesis  (pdf, 1156 kB) 应用笔记 PDF
A Technical Tutorial on Digital Signal Synthesis  (pdf, 901 kB)
Copyright © 1999 Analog Devices, Inc.
设计手册 PDF
高性能时钟: 解密抖动
现在每个电子设备一般都有多个时钟,所以必须考虑到这些时钟的抖动性能。低抖动和低相位噪声的时钟对数字信号的处理是非常重要的。所谓时钟抖动是指时钟触发沿的随机误差,通常可以用两个或多个时钟周期之间的差值来量度,这个误差是由时钟发生器内部产生的。时钟的抖动将会影响到仪表的精确测量,在无线通信中将会引起更高的误码率和不良的通信质量,时钟的相位噪声也会引起数据误差和降低数据吞吐量。因此,欢迎大家和我们一起探讨亚皮秒抖动的时钟性能。在这次在线研讨会上,我们将详细探讨抖动和相位噪声的关系以及亚皮秒抖动和超低相位噪声的测量方法。这次在线研讨会还将会涵盖高性能时钟IC的应用考虑。ADI公司的新型ADIsimCLK时钟仿真工具的使用也将会在这次研讨会上作详细介绍。
在线研讨会 WEBCAST
Fundamentals of Frequency Synthesis, Part 2: Direct Digital Synthesis (DDS)
This month we conclude our two-part series on frequency synthesis, with an introduction to Direct Digital Synthesis. We will give a basic review of how a direct digital synthesis system works, touching on the inner workings of the DDS engine at a relatively high level. We will also discuss the tradeoffs between PLL and DDS technology as a base choice for frequency synthesis needs.
在线研讨会 WEBCAST
Speedy A/Ds Demand Stable Clocks
by Jeff Keip, Analog Devices, Inc. (EE Times, 3/18/04)
技术文章 HTML
Improved DDS Devices Enable Advanced Comm Systems
by Valoree Young, Analog Devices
(Electronic Products, September 2006)
技术文章 HTML
Introducing Digital Up/Down Converters: VersaCOMM™ Reconfigurable Digital Converters  (pdf, 63 kB)
Revolutionize your radio architectures
技术文章 PDF
Digital Up/Down Converters: VersaCOMM™ White Paper  (pdf, 97 kB) 技术文章 PDF
Basics of Designing a Digital Radio Receiver (Radio 101)  (pdf, 77 kB) 技术文章 PDF
The Year of the Waveform Generator
(Test & Measurement World, 12/1/2005)
技术文章 HTML
DDS Simplifies Polar Modulation
By Ken Gentile, Analog Devices ... Basic modulation mathematics and DDS (direct digital synthesis) provide designers with an all-digital technique for generating polar-encoded carrier signals. (EDN, 8/5/2004)
技术文章 HTML
Digital Upconverter IC Tames Complex Modulation  (pdf, 837 kB)
by Ken Gentile, Analog Devices, Inc.
... An improved 14-bit architecture, simplified synchronization, and enhanced power-saving circuitry are a few of the features of this quadrature digital upconverter.
(Reprinted with permission of Microwaves & RF where it first appeared in the August 2000 issue)
技术文章 PDF
应用工程师问答——33:直接数字频率合成全攻
(模拟对话,第38卷,2004年8月)
《模拟对话》杂志 HTML
Free Direct Digital Synthesis IC Evaluation Tool
(Control Engineering, 9/14/2006)
产品评述 HTML
On-Line Evaluation Tool Simplifies Implementing DDS Semiconductors
(eeProductCenter, 8/16/2006)
产品评述 HTML
Are there any specific recommendations for material in the vias of the circuit board for the thermally enhanced package styles in which some ADI DDS' are available? 常见问题解答 HTML
I have limited experience working with thermally enhanced packages. Where can I get information concerning the proper techniques for soldering and assembly? 常见问题解答 HTML
I need to operate my DDS part above the rated temperature range. Can you give me any reliability data? 常见问题解答 HTML
Are any of your DDS products space qualified? 常见问题解答 HTML
Why did the model numbers change on the AD9852 and AD9854 products? I thought they were available in the ASQ package. 常见问题解答 HTML
If the port has a differential REF CLK, and I want to use a single-ended clock, what do I do with the other differential input? 常见问题解答 HTML
If I violate the proper logic level of the REF CLK (that is, underdrive or overdrive it), what can I expect? 常见问题解答 HTML
What type of signal source is recommended? 常见问题解答 HTML
Why does spectral performance degrade when using larger values of multiplication on the clock multiplier? 常见问题解答 HTML
Can the DDS evaluation boards be integrated directly into a system project? 常见问题解答 HTML
I am having problems getting my evaluation software to see my evaluation board; what should I do to correct the problem? 常见问题解答 HTML
Is all DDS software supplied by Analog Devices compatible with all WinXX versions? 常见问题解答 HTML
What is the proper termination for the DAC outputs for the DDS products? 常见问题解答 HTML
Why can't I see a signal at the output of my DDS when it is unterminated? (I'm setting everything correctly, but I'm just probing the output pins of the DDS which have nothing connected to them.) 常见问题解答 HTML
How can I synchronize multiple DDS parts? 常见问题解答 HTML
Can I gate the REF CLK on and off? 常见问题解答 HTML
What kind of problems can I expect from exceeding the maximum clock rate? (power dissipation, spectral problems) 常见问题解答 HTML
What is the effect of REF CLK jitter on the DDS? 常见问题解答 HTML
What are the proper logic input levels for the DDS parts? 常见问题解答 HTML
What are the advantages and disadvantages of serial and parallel mode? 常见问题解答 HTML
Can I read back data at the same rate that I can write the data to the DDS device? 常见问题解答 HTML
What logic families can interface with our parts? 常见问题解答 HTML
What is the maximum speed I can write to the part? 常见问题解答 HTML
I would like to update the FTW of my DDS, but only a single byte of the FTW needs to change. Can the frequency tuning word of a DDS be partially updated a byte at a time? 常见问题解答 HTML
What layout recommendations do you have for the power supply pins of the DDS device? 常见问题解答 HTML
What is the effect of increasing my supply voltage beyond the nominal recommended value? 常见问题解答 HTML
I have limited power to supply to the part. What can I do to reduce the power consumption of the device and thus ensure that my supply is adequate? 常见问题解答 HTML
Do you recommend a linear or switching power supply? 常见问题解答 HTML
Should I separate digital and analog ground planes on my evaluation board? 常见问题解答 HTML
Can I use the same power supply for AVDD and DVDD? 常见问题解答 HTML
What is the ratio between the analog and digital currents drawn by the DDS devices? 常见问题解答 HTML
I'm not using all the blocks of the AD9858. What do I do with the unused inputs of these sections? 常见问题解答 HTML
What causes a Quadrature Digital Upconverter (AD9856, AD9857) to go into a CIC overflow condition? 常见问题解答 HTML
How do I use a DDS for a clock driver? 常见问题解答 HTML
How do I perform amplitude modulation on the output? 常见问题解答 HTML
How can I control the envelope of the output? 常见问题解答 HTML
How do I change the phase of my output signal? 常见问题解答 HTML
Are frequency changes of a DDS phase coherent? 常见问题解答 HTML
Does Analog Devices offer a list of manufacturers of oscillators for DDS devices? 常见问题解答 HTML
Where can I find some good background material on direct digital synthesis? 常见问题解答 HTML
RAQs index 非常见问题解答 HTML
术语表 专业词汇表 HTML

设计工具,模型,驱动及软件

快讯名称 内容类型 文件类型
AD9857 IBIS Models IBIS 模型 HTML

评估套件,原理图符号和PCB封装

评估板和开发套件查看评估板和套件页面以了解文档和采购信息

原理图符号和PCB封装— ADI公司提供与当今众多CAD系统兼容的原理图符号和PCB封装(Symbols & Footprints),以便更广泛、更轻松地使用。

Sample样片申请及购买

价格,封装及供货状态

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这里所列出的美国报价单仅供预算参考,指美元报价(规定订量的每片美元,美国离岸价),如有修改不再另行通知。由于地区关税、商业税、汇率及手续费原因,国际报价可能不同。对于特殊批量报价,请与您当地的ADI公司办事处或代理商联络。对于评估板和套件的报价是指一个单位价格。

AD9857 评估板
产品型号 描述 报价 RoHS 查看PCN/PDN 查看库存/
购买/样片
AD9857/PCBZ 产品状态: 量产 Evaluation Board $ 400.00 -

所示报价为单片价格。所列的美国报价单仅供预算参考,指美元报价(每片美国离岸价),如有修改,恕不另行通知。由于地区关税、商业税、汇率及手续费原因,国际报价可能不同。

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