eprintid: 390
rev_number: 9
eprint_status: archive
userid: 7
dir: disk0/00/00/03/90
datestamp: 2011-11-28 15:22:33
lastmod: 2015-05-29 20:00:45
status_changed: 2011-11-28 15:22:33
type: report
metadata_visibility: show
item_issues_count: 0
creators_name: Ward, J.A.
creators_name: Lapin, V.
creators_name: Lee, W.
title: The Eect of Mechanical Loading on the Frequency of an Oscillator Circuit
ispublished: pub
subjects: other
studygroups: esgi70
full_text_status: public
abstract: 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% 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^-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.
date: 2009
citation:   Ward, J.A. and Lapin, V. and Lee, W.  (2009) The Eect of Mechanical Loading on the Frequency of an Oscillator Circuit.  [Study Group Report]     
document_url: http://miis.maths.ox.ac.uk/miis/390/1/ESGI70_2.pdf