{"title":"Simple DSP interface for impedance spectroscopy of piezo-sensors","authors":"O. Martens, M. Reidla, T. Saar","doi":"10.1109/BEC.2010.5630782","DOIUrl":null,"url":null,"abstract":"An interface for impedance spectroscopy measurements of piezo-sensors has been developed, for a digital signal processor of Delfino series of Texas Instruments. DAC of the interface is based on a 16-bit PWM with extra 8-bit part of “high resolution” (of picoseconds), with external simple (3-rd order) analog filter. Internal 12-bit ADC is converting at rates of up to 10 MS/s with 2 simultaneous sample-and-holds. So, with few extra components, high-performance analog interface has been “improvised” (developed and investigated) with a frequency range 10 kHz −400 kHz about 0,1% of the full scale resolution and repeatability of measurements.","PeriodicalId":228594,"journal":{"name":"2010 12th Biennial Baltic Electronics Conference","volume":"58 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2010-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"4","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2010 12th Biennial Baltic Electronics Conference","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/BEC.2010.5630782","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 4
Abstract
An interface for impedance spectroscopy measurements of piezo-sensors has been developed, for a digital signal processor of Delfino series of Texas Instruments. DAC of the interface is based on a 16-bit PWM with extra 8-bit part of “high resolution” (of picoseconds), with external simple (3-rd order) analog filter. Internal 12-bit ADC is converting at rates of up to 10 MS/s with 2 simultaneous sample-and-holds. So, with few extra components, high-performance analog interface has been “improvised” (developed and investigated) with a frequency range 10 kHz −400 kHz about 0,1% of the full scale resolution and repeatability of measurements.
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