Single-Event Transient Pulse-Width Measurements in Advanced ...

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Well Contacts and Guard BandsVanderbilt Radiation Effects GroupSchool of EngineeringWell Contacts(isolated)HDWCHDWCGBsubstratecontactConventional Layout –Isolated Well ContactsHigh Density WellContacts (HDWC)HDWC + Guard Band (GB) Strikes within n-well lead to long SETs dueto parasitic bipolar effect Mixed mode simulations using calibrated130-nm process – show effect of GB andHDWC in mitigating long SETsMURI ReviewVoltage (V)1.41.210.80.60.40.20-0.2isolated contactsHDWCHDWC+GBmixed mode TCAD simulationLET = 40 MeV-cm 2 /mg0.0E+00 5.0E-10 1.0E-09 1.5E-09 2.0E-09 2.5E-09 3.0E-09time (s)May 13, 2008 14
Characterizing Guard BandsVanderbilt Radiation Effects GroupXe at 38.5 degEvents measured60504030201002403604806007208409601080SET pulse width (ps)with GB+HDWCwith isolated contacts1200132014401560Cumulative Event Cross Section (cm 2 )1.E-051.E-061.E-07School of EngineeringSETs > 1 ns - with isolated contactsSETs > 1 ns - with GB + HDWC1.E-080 20 40 60 80 100 120Effective LET (MeV-cm 2 /mg)isolated contacts –conventional layoutpracticehigh density wellcontacts (HDWC)guard bands (GB) Events > 1ns reduced by ~72% forcircuits with GB + HDWC Reduction in frequency and max SETwidth attributed to reduction inparasitic bipolar effectMURI ReviewMay 13, 2008 15
Page 4: Autonomous SET captureVanderbilt Ra
Page 7 and 8: 1.2 48 58.7 75 100Vanderbilt Radiat
Page 9 and 10: Alpha-Induced SETsVanderbilt Radiat
Page 11 and 12: Comparison - Energetic ParticlesVan
Page 13: Other ApplicationsVanderbilt Radiat
Page 17: ConclusionVanderbilt Radiation Effe

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