Abstract
Dual charge pump data show a reduction of circuit output voltage with dose. Through testing of individual process monitors, the response is identified as parasitic interdevice leakage caused by trapped oxide charge buildup in the isolation oxide. A library of compact models is generated for the field oxide parasitic based on test structure data along with 2-D structure simulation results. The charge pump schematic is then back annotated with transistors representative of the parasitic at different dose levels. Inclusion of the parasitic devices in schematic allows for simulation of the entire circuit at a specific dose. The reduction of circuit output with dose is then re-created in simulation.
Original language | English (US) |
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Article number | 5658007 |
Pages (from-to) | 3609-3614 |
Number of pages | 6 |
Journal | IEEE Transactions on Nuclear Science |
Volume | 57 |
Issue number | 6 PART 1 |
DOIs | |
State | Published - Dec 2010 |
Keywords
- Charge pump
- LOCOS
- interdevice leakage
- oxide trapped charge
- radiation
- total ionizing dose
ASJC Scopus subject areas
- Nuclear and High Energy Physics
- Nuclear Energy and Engineering
- Electrical and Electronic Engineering