The MIIS Eprints Archive

The Eect of Mechanical Loading on the Frequency of an Oscillator Circuit

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]

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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.

Item Type:Study Group Report
Problem Sectors:None/Other
Study Groups:European Study Group with Industry > ESGI 70 (Limerick, Ireland, Jun 28-Jul 3, 2009)
ID Code:390
Deposited By:Dr Kamel Bentahar
Deposited On:28 Nov 2011 15:22
Last Modified:28 Nov 2011 15:22

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