Impact of Radiation-Induced Single-Event Transients on High Resolution Time to Digital Converter
The paper presents the analysis of radiation-induced Single-Event Transients (SET) in Delay-Locked Loop (DLL) and its impact in the digital output of Time-to-Digital Converter (TDC). The performance of the TDC such as Differential Non-Linearity (DNL),Integral Non- Linearity (INL), resolution etc. are degraded due propagation of the SET from the DLL. The use of improved pseudo differential current-starved delay cell structure in the Voltage Controlled Delay Line (VCDL) in DLL reduces the impact of radiation- induced SET in DLL, and enhances the robustness of DLL based TDC. This effort represents the first of its kind SET analysis on a DLL based TDC. The proposed DLL based TDC is designed in the AMS 180 nm CMOS technology and simulations show that the number of missing pulses on a SET strike in the modified pseudo differential delay cell is reduced to 50% than compared the conventional architectures.
Single event Simulation methodology for analog/mixed signal design hardening
We propose a single-event simulation methodology to characterize the upset/error window of vulnerability for analog/mixed signal circuits. A custom designed 8-b pipeline analog-to-digital converter (ADC) is characterized and hardened based on the results of the simulations.
Assessing student learning in higher education
Chapter 1. Introduction to the Text, Chapter 2. What is Assessment?, Chapter 3. Student Learning, Chapter 4. Methods and Strategies: An Overview, Chapter 5. Assessing Essays, Chapter 6. Multiple Choice Questions, Chapter 7. Assessing Practical Work, Chapter 8. Assessing Projects, Chapter 9. Assessing Problems, Chapter 10. Assessing Oral Communication, Chapter 11. Self and Peer Assessment, Chapter 12. Self Assessment: Related Approaches, Chapter 13. Using Computers in Assessment, Chapter 14. Changing Assessment, Chapter 15. Reliability, Validity and Examining, Chapter 16. Quality, Standards and Underlying Issues, Bibliography Notes and comments on activities Some further reading Appendix One: Examples of examination questions in Arts, Law and Social Sciences