|
|||||||||
 |
|
||||||||
|
|
||||||||||||||
| . 网站首页 . 新闻 . 新品 . 方案 . 专访 . 活动 . DSP . EDA . 评测室 . 技术文库 . 会员区 . 商城 . 服务导航 . 邮购 . 资源 . | ||
 |
||
|
||
|
|||||
| Linear LT5570 RF功率检测方案 | |||||
作者：Linear 文章来源：Linear 点击数： 更新时间：2007-12-26  |
|||||
|
LT5570: 2.7GHz, 60dB Mean-Squared Power Detector Responds in 500ns The LT®5570 is a 40MHz to 2.7GHz monolithic Logarithmic Mean-Squared RF power detector. It is capable of RMS measurement of an AC signal with wide dynamic range, from –52dBm to 13dBm depending on frequency. The power of the AC signal in an equivalent decibel-scaled value is precisely converted into DC voltage on a linear scale, independent of the crest factor of the waveforms. The LT5570 is suitable for precision RF power measurement and level control for a wide variety of RF standards, including CDMA, W-CDMA, CDMA2000, TD-SCDMA and WiMAX. The DC output is buffered with a low output impedance amplifi er capable of driving a high capacitance load. 主要特性： n Frequency Range: 40MHz to 2.7GHz n Accurate RMS Power Measurement of High Crest Factor Modulated Waveforms n Linear DC Output vs Input Power in dBm n Linear Dynamic Range: Up to 60dB n Exceptional Accuracy over Temperature: ±0.3dB n Fast Response Time: 0.5μs Rise Time, 8μs Fall Time n Low Supply Current: 26.5mA n Low Impedance Output Buffer Capable of Driving High Capacitance Load n Small 3mm 3mm 10-Lead DFN Package 主要应用： n RMS Power Measurement n RF Power Control n Receive and Transmit Gain Control n W-CDMA, CDMA2000, TD-SCDMA, WiMAX n RF Instrumentation  图1。LT5570应用电路图  图2。40MHz 到 860MHz 应用时LT5570测试电路图 |
|||||
| 欢迎点击进入：TI德州中文网 (国内唯一针对TI应用的中文技术网站) 文章录入：admin 责任编辑：admin | |||||
| 【发表评论】【加入收藏】【告诉好友】【打印此文】【关闭窗口】 | |||||
| 最新热点 | 最新推荐 | 相关文章 | ||
| Linear LT3518 LED驱动器解决… Linear LTC6400-20高速放大器… |
| 网友评论：（只显示最新10条。评论内容只代表网友观点，与本站立场无关！） |
| | 设为首页 | 加入收藏 | 联系站长 | 友情链接 | 版权申明 | 网站公告 | 管理登录 | | |||
|
