Time-Based Approaches for Mixed-Mode Signal Processing

Dear Colleagues,

The rapid advance of CMOS technology has been primarily geared towards optimizing the performance of digital circuits. As a result, analog CMOS circuits not only continue to lose the benefit of specialized components, they must also cope with a rapidly shrinking voltage headroom, worsening device mismatch, and deteriorating linearity while satisfying ever stringent specifications. Time-based signal processing, where analog information is represented by the time difference between the occurrence of two digital events, offers a viable and technology friendly means to combat difficulties encountered in design of mixed analog-digital systems. Time-based signal processing deals with the addition, subtraction, multiplication, amplification, differentiation, integration, quantization, etc., of time variables. Time-mode circuits possess the full merits of digital circuits including fully compatibility with technology scaling, programmability, portability, immunity to disturbances and noise, and a short design cycle that which are not possessed by their analog counterparts. Time-based signal processing has found a broad spectrum of emerging applications in including vehicle navigation systems, data converters, finite and infinite impulse response filters (FIR, IIR filters), all digital phase-locked loops and frequency synthesizers, and high-speed data links, to name a few. This Special Issue is aimed at presenting the latest research findings in time-based approaches for mixed-mode signal processing. Topics of interest include voltage-to-time converters, time-to-voltage converters, time-to-digital converters, digital-to-time converters, time-mode arithmetic circuits such as time adders, time differentiators, and time integrators, time registers, time quantizers, time amplifiers, time-mode delta-sigma modulators, time-mode successive approximation register analog-to-digital converters, time-mode all-digital phase-locked loops and frequency synthesizers, time-mode FIR and IIR filters, and time-mode data links.

Prof. Fei Yuan
Guest Editor

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• Time-Mode Signal Processing
• Time Integrators
• Time Registers
• Time Amplifiers
• Time Quantizers
• Time-to-Digital Converters
• Digital-to-Time Converters
• Voltage-to-Time Converters
• Time-Mode Analog-to-Digital Converter
• All-Digital Phase-Locked Loops
• All-Digital Frequency Synthesizers