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Engineering - Circuits & Systems | Calibration Techniques in Nyquist A/D Converters

Calibration Techniques in Nyquist A/D Converters

van der Ploeg, Hendrik, Nauta, Bram

2006, XVIII, 190 p.

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  • About this book

In modern systems signal processing is performed in the digital domain. Contrary to analog circuits, digital signal processing offers more robustness, programmability, error correction and storage possibility. The trend to shift the A/D converter towards the input of the system requires A/D converters with more dynamic range and higher sampling speeds. This puts extreme demands on the A/D converter and potentially increases the power consumption.

This book analyses different A/D-converter architectures with an emphasis on the maximum achievable power efficiency. It is shown that in order to achieve high speed and high accuracy at high power efficiency, calibration is required. Calibration reduces the overall power consumption by using the available digital processing capability to relax the demands on critical power hungry analog components. Several calibration techniques are analyzed.

Those presented are applicable to other analog-to-digital systems, such as those applied in integrated receivers. Further refinements will allow using analog components with less accuracy, which will then be compensated by digital signal processing. The methods presented allow impl

Content Level » Research

Keywords » A/D conversion - CMOS - Calibration - Mixed-signal - Nyquist - Power efficiency - consumption - integrated circuit

Related subjects » Circuits & Systems - Electronics & Electrical Engineering - Mechanical Engineering

Table of contents 

List of abbreviations. List of symbols. Preface. 1. Introduction. 1.1 A/D conversion systems. 1.2 Motivation and objectives. 1.3 Layout of the book. 2. Accuracy, speed and power relation. 2.1 Introduction. 2.2 IC-technology accuracy limitations. 2.3 Speed and power. 2.4 Maximum speed. 2.5 CMOS Technology Trends. 2.6 Conclusions. 3. A/D converter architecture comparison. 3.1 Introduction. 3.2 Flash. 3.3 Folding and interpolation. 3.4 Two-step. 3.5 Pipe-line. 3.6 Successive approximation. 3.7 Theoretical power consumption comparison. 3.8 Conclusions. 4. Enhancement techniques for two-step A/D converters. 4.1 Introduction. 4.2 Error sources in a two-step A/D architecture. 4.3 Residue gain in two-step A/D converters. 4.4 Offset calibration. 4.5 Mixed-signal chopping and calibration. 5. A 10-bit two-step ADC with analog online calibration. 5.1 Introduction. 5.2 Two-step architecture. 5.3 Circuit design. 5.4 Experimental results. 5.5 Discussion. 5.6 Conclusions. 6. A 12-bit two-step ADC with mixed-signal chopping and calibration. 6.1 Introduction. 6.2 Two-step architecture. 6.3 Mixed-signal chopping and calibration. 6.4 Circuit design. 6.5 Experimental results. 6.6 Discussion. 6.7 Conclusions. 7. A low-power 16-bit three-step ADC for imaging applications. 7.1 Introduction. 7.2 Three-step architecture. 7.3 Noise considerations. 7.4 Mixed-signal chopping and calibration. 7.5 Supply voltages. 7.6 Experimental results. 7.7 Discussion. 7.8 Conclusions. 8. Conclusions. A. Static and dynamic accuracy requirements. References. Index.

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