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]
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|
|Study Groups:||European Study Group with Industry > ESGI 70 (Limerick, Ireland, Jun 28-Jul 3, 2009)|
|Deposited By:||Dr Kamel Bentahar|
|Deposited On:||28 Nov 2011 15:22|
|Last Modified:||28 Nov 2011 15:22|
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