Design of Lo-Voltage CMOS Sitched-Opamp Sitched-Capacitor Systems [Hardcover]

This volume emphasizes the design and development of advanced switched-opamp architectures and techniques for low-voltage low-power switched-capacitor systems. It 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.

Demand for low-power low-voltage integrated circuits (ICs) has rapidly grown due to the increasing importance of portable equipment in all market segments including telecommunications, computers, and consumer electronics. The need for low-voltage ICs is further motivated by CMOS technology scaling that requires low supply voltages for device reliability. On the other hand, switched-capacitor (SC) circuits, which have been well known for high accuracy and low distortion, have also become increasingly attractive for low-voltage, low-power, and even high-frequency applications. Switched-opamp (SO) technique has been proposed to enable SC circuits to operate with a single 1-V supply in standard CMOS processes without any clock voltage multiplier or low-threshold devices. However, the existing SO technique requires the opamps to turn off after their integrating phases and thus is not suitable for most of the 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 opl-