A Technique for Extracting the Threshold Voltage of MOSFET Based on Savitzky-Golay Filter
Yang Hong-gua · Dianzi xuebao · 2013
Originally from the noise and errors in measurement,the fluctuations make the extraction of MOSFET's threshold voltage unstable,which will become worse in the case of the derivation operation.We proposed that the Savitzky-Golay filtering algorithm could be introduced into the derivation process in order to alleviate the influence of fluctuations effectively.A criterion for assessing the goodness of filtering was presented,and then the extraction of threshold voltage of MOSFET could be achieved stably and automatically,which will be in favor of the characterizing MOS devices and designing integrated circuits.