International Test Conference 2002 (ITC'02)
Screening MinVDD Outliers Using Feed-Forward Voltage Testing
Baltimore, MD, USA
October 07-October 10
ISBN: 0-7803-7543-2
MinVDD testing using full vector set search routines consume too much test time.A 3-step process is proposed using (1) a reduced vector set (RVS) binary search to measure the intrinsic (defect free) MinVDD fora die, (2) a feed-forward to the full vector set (FVS) for Low Voltage testing and (3) Delta VDD and Nearest Neighbor Residual Statistical Post-Processing (SPP) are applied to the data to screen the MinVDD outliers that are identified using the RVS binary search.RVS vs.FVS correlation data is shown on 3 products. Data shows minVDD yield fall out of 0.2-0.8% and 20% of the minVDD outliers shows significant VDD shifts in burn-in.
Citation:
R. Madge, B.H. Goh, V. Rajagopalan, C. Macchietto, R. Daasch, C. Schuermyer, C. Taylor, D. Turner, "Screening MinVDD Outliers Using Feed-Forward Voltage Testing," itc, pp.673, International Test Conference 2002 (ITC'02), 2002