Reference-free CMOS Pipeline Analog-to-digital Converters

Figueiredo, Michael; Goes, Joao Carlos da Palma; Evans, Guiomar Gaspar De Andrade

ISBN 10: 1461434661 / ISBN 13: 9781461434665

Published by Springer-Verlag New York Inc., 2012

Showing that digitally assisted analog-to-digital converters are not the only solution to the poor performance caused by technology scaling, this book describes analog design techniques to enhance power and efficiency without any digital calibration circuitry. Series: Analog Circuits and Signal Processing. Num Pages: 200 pages, 25 black & white tables, biography. BIC Classification: TJFC. Category: (P) Professional & Vocational. Dimension: 234 x 156 x 12. Weight in Grams: 467. . 2012. 2013th Edition. hardcover. . . . . Seller Inventory # V9781461434665

Synopsis:

This book shows that digitally assisted analog to digital converters are not the only way to cope with poor analog performance caused by technology scaling. It describes various analog design techniques that enhance the area and power efficiency without employing any type of digital calibration circuitry. These techniques consist of self-biasing for PVT enhancement, inverter-based design for improved speed/power ratio, gain-of-two obtained by voltage sum instead of charge redistribution, and current-mode reference shifting instead of voltage reference shifting. Together, these techniques allow enhancing the area and power efficiency of the main building blocks of a multiplying digital-to-analog converter (MDAC) based stage, namely, the flash quantizer, the amplifier, and the switched capacitor network of the MDAC. Complementing the theoretical analyses of the various techniques, a power efficient operational transconductance amplifier is implemented and experimentally characterized. Furthermore, a medium-low resolution reference-free high-speed time-interleaved pipeline ADC employing all mentioned design techniques and circuits is presented, implemented and experimentally characterized. This ADC is said to be reference-free because it precludes any reference voltage, therefore saving power and area, as reference circuits are not necessary. Experimental results demonstrate the potential of the techniques which enabled the implementation of area and power efficient circuits.

From the Back Cover:

This book shows that digitally assisted analog-to-digital converters are not the only way to cope with poor analog performance caused by technology scaling. It describes various analog design techniques that enhance the area and power efficiency without employing any type of digital calibration circuitry. These techniques consist of self-biasing for PVT enhancement, inverter-based design for improved speed/power ratio, gain-of-two obtained by voltage sum instead of charge redistribution, and current-mode reference shifting instead of voltage reference shifting. Together, these techniques allow enhancing the area and power efficiency of the main building blocks of a multiplying digital-to-analog converter (MDAC) based stage, namely, the flash quantizer, the amplifier, and the switched capacitor network of the MDAC. Complementing the theoretical analyses of the various techniques, a power efficient operational transconductance amplifier is implemented and experimentally characterized. Furthermore, a medium-low resolution reference-free high-speed time-interleaved pipeline ADC employing all mentioned design techniques and circuits is presented, implemented and experimentally characterized. This ADC is said to be reference-free because it precludes any reference voltage, therefore saving power and area, as reference circuits are not necessary. Experimental results demonstrate the potential of the techniques which enabled the implementation of area and power efficient circuits.

Describes various design techniques to enhance the power and area efficiency of building blocks for multiplying digital-to-analog converter (MDAC) based ADCs, such as Pipeline, Algorithmic, and multi-step Flash;

Enables analog designers to enhance the performance of a range of circuits, without employing any type of digital assistance (calibration);

Includes complete design flow of an ADC based on the proposed circuits and design techniques.

Bibliographic Details

Title: Reference-free CMOS Pipeline ...
Publisher: Springer-Verlag New York Inc.
Publication Date: 2012
Binding: Hardcover
Condition: New