低频信号峰值保持器的设计

183Vol18No3JOURNALOFSICHUANUNIVERSITYOF20059SCIENCE&ENGINEERINGNATURALSCIENCEEDITIONSep20056430006usADCTN722.7+3A6us6us6usADCADCab2005-02-161972-16200591a10nsba10mv10v1MHz6us5236Dab12D12634518317CC6usA3D0.2V233RC3a3bRCK2()K1(),K1,K2CRC(∞)K1K2K2K1(ns)D3b110,TTLQ52TTL6DQ5QQK1DQ()K24K24MAX314K14MAX3141MHzns18200591EG&GORTECModel4191us56usns()[1]EG&GORTEC,Model673SpectroscopyAmplifierandGateIntegratorOperatingandServiceManual.[2].[M].,1991.[3].[M].,1989.DesignofPeakHoldingZHOUBo(Dept.ofElectronisandinformationEngineering,SichuanUniversityofScienceEngineering,Zigong643000,China)Abstract:Twokindofpeakholdingareintroduced.Thetheoriesarecorrect,butwecanseethatthesecondisbetterthanthefirstinpractice.Thepeakvaluecanbeholdedin6us(thatenoughforthetimeofADClater).Thenthepeakvalueisreleaseddowntozeroinverymoment.Keywords:analogswitches;peakholding