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src="https://forum.eepw.com.cn/jscontent/wenzilian" type="text/javascript"></script>  <div class="84gi8ss" id="container"> <section> <article> <h1>IDT推出首款FlatNoise雙中頻可變?cè)鲆娣糯笃?/h1> <div id="uooyaqa" class="subhead" style="padding-bottom:15px;padding-right:50px;font-size:16px;color:#252525;font-style:normal;text-align:center;">—— 可改善服務(wù)質(zhì)量并減少數(shù)據(jù)轉(zhuǎn)換器的SNR 要求 </div> <div id="sqiaaii" class="authorTimeSource"> <span>作者：</span> <span>時(shí)間：2012-02-02</span> <span>來源：電子產(chǎn)品世界</span> <link rel="stylesheet" type="text/css"/> <span style="float:right; width:130px;margin-right:0px; text-align:right;"> <div id="aoyisqi" class="nav0"> <ul> <li><a href="javascript:void(0);"><img src="http://www.ex-cimer.com/event/action/images/icon_add_4.png" width="20" border="0" align="absmiddle" />加入技術(shù)交流群</a> <ul> <li style="text-align:center;"><img src="http://www.ex-cimer.com/event/company/images/code_1.jpg" width="130"><br />掃碼加入<br />和技術(shù)大咖面對(duì)面交流<br />海量資料庫查詢</li> </ul> </li> </ul> </div> </span> <span style="float:right; width:30px;margin-right:0px; text-align:right;"><a rel="nofollow">收藏</a></span> </div> <div id="w46a4sa" class="hAd4_Afinal20a_back">  <iframe id='a890e388' name='a890e388' src='https://ad.eepw.com.cn/www/delivery/afr.php?zoneid=88&cb=INSERT_RANDOM_NUMBER_HERE' frameborder='0' scrolling='no' width='660' height='60'><a target='_blank'><img src='https://ad.eepw.com.cn/www/delivery/avw.php?zoneid=88&cb=INSERT_RANDOM_NUMBER_HERE&n=a635e61e' border='0' alt='' /></a></iframe> </div> <div style="margin-top:28px;"></div> <div id="osku4m4" class="content" id="contentDiv" style="position:relative;"> <div id="k6ia4ge" class="ad_300x180_Afinal13_back">  <iframe id='a225770a' name='a225770a' src='https://ad.eepw.com.cn/www/delivery/afr.php?zoneid=87&cb=INSERT_RANDOM_NUMBER_HERE' frameborder='0' scrolling='no' width='300' height='200'><a target='_blank'><img src='https://ad.eepw.com.cn/www/delivery/avw.php?zoneid=87&cb=INSERT_RANDOM_NUMBER_HERE&n=a576c0a2' border='0' alt='' /></a></iframe> </div> <span id="contentlabels" style="font-size:14px;"><p>　　擁有模擬和數(shù)字領(lǐng)域的優(yōu)勢技術(shù)、提供領(lǐng)先的混合信號(hào)半導(dǎo)體解決方案的供應(yīng)商 <a class="contentlabel" href="http://www.ex-cimer.com/news/listbylabel/label/IDT"><em>IDT</em></a><sup> </sup>公司 (Integrated Device Technology, Inc.; NASDAQ: <a class="contentlabel" href="http://www.ex-cimer.com/news/listbylabel/label/IDT"><em>IDT</em></a>I) 宣布，已推出業(yè)界首款針對(duì)2G/3G/4G 無線基站多模式收發(fā)器的FlatNoise 雙中頻(IF)可變?cè)鲆娣糯笃?VGA)。<a class="contentlabel" href="http://www.ex-cimer.com/news/listbylabel/label/IDT"><em>IDT</em></a> 的器件針對(duì)最大增益提供業(yè)界最佳的噪聲系數(shù)(4dB)，當(dāng)增益降低時(shí)幾乎不會(huì)衰減，可改善服務(wù)質(zhì)量(QoS)并減少下行數(shù)據(jù)<a class="contentlabel" href="http://www.ex-cimer.com/news/listbylabel/label/轉(zhuǎn)換器"><em>轉(zhuǎn)換器</em></a>的信噪比(SNR)要求，從而減少系統(tǒng)成本。</p>本文引用地址：<a href="http://www.ex-cimer.com/article/128482.htm">http://www.ex-cimer.com/article/128482.htm</a> <p>　　IDT F1240 和F1241采用IDT 的FlatNoise 技術(shù)，是雙通道數(shù)字控制中頻(IF)可變?cè)鲆娣糯笃?VGA)。這項(xiàng)全新的技術(shù)可為31dB 寬廣增益控制范圍中關(guān)鍵的前13dB 部分幾乎消除噪聲系數(shù)衰減。與其他中頻可變?cè)鲆娣糯笃魍ǔｋS著增益的減少在噪聲系數(shù)中顯示出dB 衰減形成鮮明對(duì)比。FlatNoise 減少了系統(tǒng)數(shù)據(jù)<a class="contentlabel" href="http://www.ex-cimer.com/news/listbylabel/label/轉(zhuǎn)換器"><em>轉(zhuǎn)換器</em></a>的SNR 要求，幫助客戶改善信號(hào)質(zhì)量，并采用更具成本效益、更低分辨率的數(shù)據(jù)<a class="contentlabel" href="http://www.ex-cimer.com/news/listbylabel/label/轉(zhuǎn)換器"><em>轉(zhuǎn)換器</em></a>。對(duì)許多應(yīng)用來說，可允許客戶通過類似的系統(tǒng)SNR從14 位數(shù)據(jù)轉(zhuǎn)換器降低至12 位數(shù)據(jù)轉(zhuǎn)換器。</p> <p>　　IDT公司副總裁兼通信部總經(jīng)理Tom Sparkman表示：“我們最新的FlatNoise射頻產(chǎn)品帶來了巨大的應(yīng)用價(jià)值，與IDT用于基站設(shè)計(jì)的領(lǐng)先計(jì)時(shí)時(shí)鐘和RapidIO 解決方案相得益彰。F1240 和F1241 擁有業(yè)界最佳的噪聲系數(shù)和最低的能耗，與我們之前推出的F1200 一起，成為業(yè)界首款提供FlatNoise 技術(shù)的產(chǎn)品。通過為VGA 改進(jìn)信號(hào)質(zhì)量，我們讓下游器件更易于操作，這為系統(tǒng)設(shè)計(jì)人員提供了靈活性以采用更多具有成本效益的數(shù)據(jù)轉(zhuǎn)換器。例如采用12位器件來替代14位器件。”</p> <p>　　IDT新的IF VGA擁有超低的失真(OIP3 = +49 dBm)，可實(shí)現(xiàn)更高的前端收益、改進(jìn)接收器的敏感性并實(shí)現(xiàn)額外提升的服務(wù)質(zhì)量。該器件在超過10 MHz至500 MHz頻率范圍通過典型的20dB最大增益運(yùn)行，提供業(yè)界最低的功耗(每通道為80mA)。此外，中頻可變?cè)鲆娣糯笃魇志_，增益階躍誤差僅為0.04dB，可進(jìn)一步改善系統(tǒng)SNR性能。并行或串行通信接口提供6 位(0.5dB: F1240)或5位(1.0 dB: F1241)分辨率控制，為設(shè)計(jì)人員提供最大的靈活性。</p> <p align="center"><img style="width: 262px; height: 187px" class="" alt="" width="447" height="358" src="http://editerupload.eepw.com.cn/201202/61fbd58c74ff8ae85498d38ba266127a.jpg" /></p> <p>　　供貨</p> <p>　　IDT F1240和F1241已向合格客戶提供樣品，提供32引腳5x5毫米QNF 封裝。</p></span>  <div class="qsc46u4" id="coverDiv" class="article_reg" style="width:100%;overflow:hidden;display:none;z-index:10;position:absolute;left:0;background:#fff;"> <center> <img src="https://webstorage.eepw.com.cn/images/display/reg.jpg" border="0" usemap="#Map" /> <map name="Map" id="Map"> <area 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