A review on high-resolution CMOS delay lines: towards sub-picosecond jitter performance

Area of Science:

• Electrical Engineering
• Integrated Circuit Design

Background:

• CMOS delay lines are crucial for digital signal processing and clock management.
• High-resolution delay steps are essential for precise timing control in modern electronics.

Purpose of the Study:

• To review common CMOS delay line techniques for high-resolution delay steps.
• To analyze the impact of integrated circuit variables on delay resolution and timing jitter.
• To discuss design specifications, trade-offs, and future trends in CMOS delay line technology.

Main Methods:

• Review of existing literature on CMOS delay line architectures.
• Analysis of analog and digitally-controlled delay element topologies and tuning strategies.
• Discussion of integrated circuit variables (process, voltage, temperature, noise) affecting delay.

Main Results:

• Identified efficient high-resolution delay line techniques.
• Highlighted trade-offs between analog/digital control, and delay resolution/range.
• Discussed the impact of CMOS technology scaling on performance.

Conclusions:

• Optimizing CMOS delay lines requires balancing resolution, range, and jitter.
• Future research focuses on sub-picosecond jitter reduction through advanced techniques.