?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.relation=http%3A%2F%2Fmiis.maths.ox.ac.uk%2Fmiis%2F390%2F&rft.title=The+Eect+of+Mechanical+Loading+on+the+Frequency+of+an+Oscillator+Circuit&rft.creator=Ward%2C+J.A.&rft.creator=Lapin%2C+V.&rft.creator=Lee%2C+W.&rft.subject=None%2FOther&rft.description=We+investigate+the+effect+of+mechanical+strain+on+the+frequency+of+an+electronic+oscillator+embedded+in+an+integrated+circuit.+This+analysis+is+aimed+at+explaining+a+1%25+inaccuracy+in+the+oscillator+frequency+under+test+conditions+prescribed+by+a+leading+supplier+of+semi-conductor+devices.+During+the+test+the+package+containing+the+oscillator+was+clamped+to+a+circuit+board+by+mechanical+pressure.+By+considering+the+nature+of+the+oscillator+we+show+that+tensile+strains+of+the+order+of+10%5E-4+could+explain+the+observations+via+the+piezoresistance+effect.+Both+a+simple+one-dimensional+analysis+based+on+the+beam+equation+and+an+elastic+finite+element+simulation+show+that+strains+of+this+magnitude+can+be+generated+during+the+test.&rft.date=2009&rft.type=Study+Group+Report&rft.type=NonPeerReviewed&rft.format=application%2Fpdf&rft.language=en&rft.identifier=http%3A%2F%2Fmiis.maths.ox.ac.uk%2Fmiis%2F390%2F1%2FESGI70_2.pdf&rft.identifier=++Ward%2C+J.A.+and+Lapin%2C+V.+and+Lee%2C+W.++(2009)+The+Eect+of+Mechanical+Loading+on+the+Frequency+of+an+Oscillator+Circuit.++%5BStudy+Group+Report%5D+++++