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Title page for ETD etd-08262013-170646

Type of Document Dissertation
Author Atkinson, Nicholas Montgomery
URN etd-08262013-170646
Title System-Level Radiation Hardening of Low-Voltage Analog/Mixed-Signal Circuits
Degree PhD
Department Electrical Engineering
Advisory Committee
Advisor Name Title
Timothy Holman Committee Chair
Arthur Witulski Committee Member
Daniel Loveless Committee Member
Greg Walker Committee Member
Lloyd Massengill Committee Member
  • analog
  • radiation
  • voltage reference
  • sample/hold
Date of Defense 2013-08-27
Availability unrestricted
In a radiation environment analog circuits are particularly susceptible to radiation effects, due to stringent requirements on signal integrity and precision. This dissertation demonstrates system-level radiation-hardening-by-design (RHBD) techniques for analog circuits, with a focus on low-voltage designs to support portability across modern technology nodes. Radiation effects analyses and hardening schemes are presented for both continuous- and discrete-time circuits. A CMOS voltage reference is used as a case study for continuous-time circuits, in which the total dose response is dominated by mismatch effects. Experiments demonstrate how chopper stabilization improves the radiation response by mitigating these effects. A switched-capacitor (SC) sample/hold amplifier is used as a case study for discrete-time circuits, in which floating nodes are especially sensitive to single events (SEs). Quad-path hardening is experimentally demonstrated to mitigate SE-induced errors in SC circuits that use complementary switches. Each case study demonstrates system-level RHBD schemes that are applicable to a wide variety of continuous- and discrete-time analog/mixed-signal circuits.
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