691335 event 1785277864 1785277935 <![CDATA[Ph.D. Dissertation Defense - Ken Li]]> Title:  High-Resolution Digital-Alike ADC Architectures and Design Automation

Committee:

Dr. Shaolan Li, ECE, Chair, Advisor

Dr. Jane Gu, ECE

Dr. Shimeng Yu, ECE

Dr. Visvesh Sathe,ECE

Dr. Levent Degertekin, ME

]]> This dissertation presents high-resolution digital-alike analog-to-digital converter (ADC) architectures and design automation techniques for improving energy efficiency, scalability, and design productivity in advanced CMOS technologies. First, an automated design methodology is developed for first- and second-order VCO-based delta-sigma ADCs. The proposed framework integrates architecture-level exploration, circuit sizing, and simulation-based optimization to reduce the manual effort and design time required for analog and mixed-signal circuits. Second, a third-order continuous-time delta-sigma modulator using a phase-time two-step quantizer is presented. By combining VCO-based and time-domain quantization techniques, the proposed architecture achieves high-resolution conversion with low power consumption. Finally, a high-resolution pipeline-SAR ADC is developed using a driver-relaxed input interface, capacitor mismatch shaping, and a power-efficient closed-loop dynamic residue amplifier. These techniques improve input drivability, robustness, and conversion efficiency without requiring intensive calibration. Together, these works demonstrate how digital-alike circuit techniques, architectural innovation, and design automation can enable scalable and energy-efficient high-resolution ADCs.

]]> <![CDATA[]]> https://teams.microsoft.com/l/meetup-join/19%3ameeting_OWJhMzZhN2ItMzNjMi00ZTY1LWFiNzAtMzAwYWNhNzM0MDRj%40thread.v2/0?context=%7b%22Tid%22%3a%22482198bb-ae7b-4b25-8b7a-6d7f32faa083%22%2c%22Oid%22%3a%22e76190a6-076f-4d3d-b21a-a60b8521f0e7%22%7d 434381 1788 100811 1808