Methodology for the Digital Calibration of Analog Circuits and Systems : with Case Studies

Marc Pastre

ISBN 10: 9048170877 / ISBN 13: 9789048170876

Published by Springer, Springer, 2010

About this Item

Druck auf Anfrage Neuware - Printed after ordering - Methodology for the Digital Calibration of Analog Circuits and Systemsshows how to relax the extreme design constraints in analog circuits, allowing the realization of high-precision systems even with low-performance components.A complete methodology is proposed, andthree applications are detailed.To start with, an in-depth analysis of existing compensation techniques for analog circuit imperfections is carried out. The M/2+M sub-binary digital-to-analog converter is thoroughly studied, and the use of this very low-area circuit in conjunction with a successive approximations algorithm for digital compensation is described. A complete methodology based on this compensation circuit and algorithm is then proposed. The detection and correction of analog circuit imperfections is studied, and a simulation tool allowing the transparent simulation of analog circuits with automatic compensation blocks is introduced. The first application shows how the sub-binary M/2+M structure can be employed as a conventional digital-to-analog converter if two calibration and radix conversion algorithms are implemented.The second application, a SOI 1T DRAM, is then presented. A digital algorithm chooses a suitable reference value that compensates several circuit imperfections together, from the sense amplifier offset to the dispersion of the memory read currents.The third application is the calibration of the sensitivity of a current measurement microsystem based on a Hall magnetic field sensor. Using a variant of the chopper modulation, the spinning current technique, combined with a second modulation of a reference signal, the sensitivity of the complete system is continuously measured without interrupting normal operation. A thermal drift lower than 50 ppm/°C is achieved, which is 6 to 10 times less than in state-of-the-art implementations. Furthermore, the calibration technique alsocompensates drifts due to mechanical stresses and ageing.

Seller Inventory # 9789048170876

Bibliographic Details

• Title: Methodology for the Digital Calibration of Analog Circuits and Systems : with Case Studies
• Publisher: Springer, Springer
• Publication Date: 2010
• Language: English
• ISBN 10: 9048170877
• ISBN 13: 9789048170876
• Binding: Taschenbuch
• Condition: Neu
• Dimensions: 235W x 155H x 16D millimeters 235 millimeters width by 155 millimeters height by 16 millimeters depth
• Weight: 423 grams

About this title

Synopsis

Methodology for the Digital Calibration of Analog Circuits and Systems shows how to relax the extreme design constraints in analog circuits, allowing the realization of high-precision systems even with low-performance components. A complete methodology is proposed, and three applications are detailed.

To start with, an in-depth analysis of existing compensation techniques for analog circuit imperfections is carried out. The M/2⁺M sub-binary digital-to-analog converter is thoroughly studied, and the use of this very low-area circuit in conjunction with a successive approximations algorithm for digital compensation is described. A complete methodology based on this compensation circuit and algorithm is then proposed. The detection and correction of analog circuit imperfections is studied, and a simulation tool allowing the transparent simulation of analog circuits with automatic compensation blocks is introduced.

The first application shows how the sub-binary M/2⁺M structure can be employed as a conventional digital-to-analog converter if two calibration and radix conversion algorithms are implemented.

The second application, a SOI 1T DRAM, is then presented. A digital algorithm chooses a suitable reference value that compensates several circuit imperfections together, from the sense amplifier offset to the dispersion of the memory read currents.

The third application is the calibration of the sensitivity of a current measurement microsystem based on a Hall magnetic field sensor. Using a variant of the chopper modulation, the spinning current technique, combined with a second modulation of a reference signal, the sensitivity of the complete system is continuously measured without interrupting normal operation. A thermal drift lower than 50 ppm/°C is achieved, which is 6 to 10 times less than in state-of-the-art implementations. Furthermore, the calibration technique alsocompensates drifts due to mechanical stresses and ageing.