PDF《电路笔记》

Schwarz SMT-03 RF 信号源提供.使用 Agilent E3631A 电源为 ADL5902 供电.有关详情请参见 AD7466 评估板原理图和 ADL5902 数据手册. 图4图5分别显示电路在

1 GHz和2.2 GHz下的性能. 和图4.

1 MHz 下的 ADC 输出代码及误差与 RF 输入功率的关系 CN-0178 电路笔记 (Continued from first page) Circuits from the Lab are intended only for use with Analog Devices products and are the intellectual property of Analog Devices or its licensors. While you may use the Circuits from the Lab in the design of your product, no other license is granted by implication or otherwise under any patents or other intellectual property by application or use of the Circuits from the Lab . Information furnished by Analog Devices is believed to be accurate and reliable. However, Circuits from the Lab are supplied as is and without warranties of any kind, express, implied, or statutory including, but not limited to, any implied warranty of merchantability, noninfringement or fitness for a particular purpose and no responsibility is assumed by Analog Devices for their use, nor for any infringements of patents or other rights of third parties that may result from their use. Analog Devices reserves the right to change any Circuits from the Lab at any time without notice, but is under no obligation to do so. Trademarks and registered trademarks are the property of their respective owners. ?2010 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. CN09331sc-0-10/10(0) w w w . a n a l o g . c o m Rev.

0 | Page

4 of

4 常见变化 对于需要较小RF检波范围的应用,可以使用AD8363均 方根检波器.AD8363 检波范围为

50 dB,工作频率最 高达

6 GHz.对于非均方根检波应用,可使用AD8317/ AD8318/AD8319或ADL5513.这些器件提供不同的检 波范围,输入频率范围最高达

10 GHz(有关详情参见 CN-0150) . AD7466 是单通道

12 位ADC,采用SPI接口.如果终端 应用需要多通道ADC,可使用双通道

12 位AD7887.在 需要多个ADC和DAC通道的多通道应用中,可使用 AD7294.除提供四路

12 位DAC输出外,这款子系统芯 片还含有

4 个非专用ADC通道、2 路高端电流检测输入 和3个温度传感器. 电流和温度测量结果经过数字化转 换后,可通过I2 C兼容接口读取. 进一步阅读 Ardizzoni, John. A Practical Guide to High-Speed Printed-Circuit-Board Layout, Analog Dialogue 39-09, September 2005. CN-0150 Circuit Note, Software Calibrated,

1 MHz to

8 GHz,

70 dB RF Power Measurement System Using the AD8318 Logarithmic Detector, Analog Devices. MT-031 Tutorial, Grounding Data Converters and Solving the Mystery of AGND and DGND , Analog Devices. MT-073 Tutorial, High Speed Variable Gain Amplifiers (VGAs), Analog Devices. MT-077 Tutorial, Log Amp Basics, Analog Devices. MT-078 Tutorial, High Speed Log Amps, Analog Devices. MT-081 Tutorial, RMS-to-DC Converters, Analog Devices. MT-101 Tutorial, Decoupling Techniques, Analog Devices. Whitlow, Dana. Design and Operation of Automatic Gain Control Loops for Receivers in Modern Communications Systems. Chapter 8. Analog Devices Wireless Seminar. 2006. 数据手册和评估板 ADL5902 Data Sheet ADL5902 Evaluation Board AD7466 Data Sheet AD7466 Evaluation Board 修订历史 10/10―Rev. 0: Initial Version ........