高帶寬HDD Preamp IC測(cè)試技術(shù)研究.pdf

1、目錄摘要1Abstract2引言3第一章緒論4第一節(jié)HDD歷史背景介紹4第二節(jié)HDDPreamp芯片介紹5第三節(jié)課題的提出8第四節(jié)本文的主要工作和結(jié)構(gòu)8第二章系統(tǒng)測(cè)試平臺(tái)一9第一節(jié)測(cè)試平臺(tái)硬件描述9第二節(jié)測(cè)試平臺(tái)軟件描述13第三章失配網(wǎng)絡(luò)與高速放大器帶寬測(cè)試17第一節(jié)傳輸線基本理論17第二節(jié)HDDPreamp帶寬測(cè)試方法25第三節(jié)失配網(wǎng)絡(luò)對(duì)放大器帶寬的影響27第四節(jié)建模仿真32第五節(jié)測(cè)試結(jié)果及結(jié)論35第四章測(cè)試算法在自動(dòng)化測(cè)試中的應(yīng)用3

2、8第一節(jié)硬盤寫入模塊消磁技術(shù)38第二節(jié)傳統(tǒng)消磁參數(shù)的測(cè)量及其缺點(diǎn)39第三節(jié)測(cè)試算法對(duì)測(cè)量精度的改進(jìn)42第四節(jié)誤差分析和結(jié)論51第五章總結(jié)和展望53參考文獻(xiàn)55附錄：Degauss自動(dòng)化測(cè)試VB腳本完整源代碼56致謝65AbstractAsthechiptechnologydevelopmentinthedirectionofthehighintegration，highspeedandhighbandwidth，thechipvalid

3、ationtestworkinthechipdesignprocessingoccupiesamoreandmoreimportantpositionButatthesametime，thechipvalidationtestworkdifficultyisalsobecomingmoreandmoreprominent，especiallyhighbandwidthanalogchipsToday’Sdomesticandforeig

4、nhighspeedandhighbandwidthanalogchipsencountermanydifficultiesinthetestWiththeincreaseoftheinputsignalbandwidthandsamplingfrequency，thetesterroroftestinginstrumentandtestingplatformwillhavealargeimpactonthetestresultEven

5、themostadvancedtestinginstruments，themeasurementaccuracyisinsomewaysalsomaynotbeabletomeettherequirementsofthetestButtheeffectoftestplatformandtestinstrumentitselfontheresultofmeasurementalwayscan’tbeeliminated，SOhowtedu

6、cetheimpactthroughimprovingthetestmethodandtechnologysuchasthedesignofteststructure，andeventurnthedisadvantageintoadvantageisachallengetotestengineerHDDPreampisadedicatedhighspeedandhighbandwidthanalogchipDuetothelimitat

7、ionofproductiontechniquesandmaterialsoftheharddiskheads，HDDPreampinputandoutputnetworkhasalotofuncertaintySOtheHDDPreampshouldbefullyconsideredaboutthenetworkproblemssuchasmismatchandnoiseduringdesignandtestprocessingThi

8、sworkembarksfromthepracticalapplication，twoconcretetestsasexample，studiedthehighbandwidthHDDPreampICvalidationtesttechnologyInthiswork，themismatchproblemofamplifiernetworkiscompletelyanalyzed，withacompletetheorythesimula

9、tionresultsandtheimprovedmethodsAndtheanalysisisabletodrawageneralconclusionInthiswork，anotherexampleelaboratesandanalyzeshowtousecomplextestalgorithmenhancetheoscilloscope’Srecognitionabilityofmicrohighspeedanalogsignal

10、inautomationtest，togetaccuratemeasurementsandmeetthetestrequirementsaboutaccuracyandefficiencyItbreaksthroughthelimitationofthetraditionaltestmethod，improvingtheaccuracyandefficiencyinautomationtestKeywords：TestPlatform，