Method of increasing AC testing accuracy through linear extrapol

Details Method of increasing AC testing accuracy through linear extrapol Method of increasing AC testing accuracy through linear extrapol

1998-05-27

2000-09-26

Metjahic, Safet

Electricity: measuring and testing

Fault detecting in electric circuits and of electric components

Of individual circuit component or element

3241581, G01R 3126

Patent

active

061247243

ABSTRACT:
A method and system are provided for increasing the accuracy of AC parametric testing. The invention provides a method of precisely estimating signal propagation delay time in an integrated circuit testing apparatus, wherein a plurality of signal propagation delay time measurements are taken and additional delay times are estimated by linearly interpolating the measured delays. A desired test point (desired output voltage at a given time) is established. Using a sample device, a slope is established on a time vs. voltage plot for a line through the desired test point. Where a desired test point falls between strobe times on a tester, linear extrapolation is used to calculate what voltages must be tested for at the two bracketing strobe times in order to guarantee the desired performance at the desired test point. One or more devices are then tested for the calculated voltages at the corresponding bracketing strobe times.

REFERENCES:
patent: 5617325 (1997-04-01), Schaefer
patent: 5923676 (1999-07-01), Sunter et al.

Affiliated with

Also associated with

Rating

Method of increasing AC testing accuracy through linear extrapol does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of increasing AC testing accuracy through linear extrapol, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of increasing AC testing accuracy through linear extrapol will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2103143