Design of Low-Voltage CMOS Switched-Opamp Switched-Capacitor Systems

In Design of Low-Voltage CMOS Switched-Opamp Switched-Capacitor Systems, the emphasis is put on the design and development of advanced switched-opamp architectures and techniques for low-voltage low-power switched-capacitor (SC) systems. Specifically, the book presents a novel multi-phase switched-opamp technique together with new system architectures that are critical in improving significantly the performance of switched-capacitor systems at low supply voltages:
*A generic fast-settling double-sampling SC biquadratic filter architecture is proposed to achieve high-speed operation for SC circuits.
*A low-voltage double-sampling (DS) finite-gain-compensation (FGC) technique is employed to realize high-resolution SD modulator using only low-DC-gain opamps to maximize the speed and to reduce power dissipation.
*A family of novel power-efficient SC filters and SD modulators are built based on using only half-delay SC integrators.
*Single-opamp-based SCsystems are designed for ultra-low-power applications.

In addition, on the circuit level, a fast-switching methodology is proposed for the design of the switchable opamps to achieve switching frequency up to 50 MHz at 1V, which is improved by about ten times compared to the prior arts.

Finally, detailed design considerations, architecture choices, and circuit implementation of five chip prototypes are presented to illustrate potential applications of the proposed multi-phase switched-opamp technique to tackle with and to achieve different stringent design corners such as high-speed, high-integration-level and ultra-low-power consumption at supply voltages of 1V or lower in standard CMOS processes.

• CMOS
• Phase
• Potential
• Standard
• communication
• computer
• development
• electronics
• filter
• integrated circuit
• tables
• telecommunications

From the reviews:

"This book presents design methodologies and the development of switched-opamp techniques. Detailed theoretical analysis and design limitation of the original switched-opamp approach are critically discussed. … it emphasizes a novel approach named ‘multi-phase switched-opamp’, proposed by authors, which can lead to improvements in terms of speed potentiality with respect to the original switched-opamp technique. … The book … can be found interesting both for specialists in the topic and for postgraduate students who are already familiar with CMOS analog circuits." (Gaetano Palumbo, IEEE Circuits & Devices Magazine, Vol. 21 (4), July/August, 2005)

• Hong Kong University of Science & Technology, China

  Vincent S. L. Cheung, Howard C. Luong

Policies and ethics