Main description:

Biopotential Readout Circuits for Portable Acquisition Systems describes one of the main building blocks of such miniaturized biomedical signal acquisition systems. The focus of this book is on the implementation of low-power and high-performance integrated circuit building blocks that can be used to extract biopotential signals from conventional biopotential electrodes. New instrumentation amplifier architectures are introduced and their design is described in detail. These amplifiers are used to implement complete acquisition demonstrator systems that are a stepping stone towards practical miniaturized and low-power systems.

Contents:

Acknowledgments. Symbols and Abbreviations. 1 Introduction. 1.1 Ambulatory Health Care Systems. 1.2 Body Area Networks. 1.3 Scope of the Book. 2 Introduction to Biopotential Acquisition. 2.1 Introduction. 2.2 Introduction to Biopotential Signals. 2.3 Introduction to Biopotential Electrodes. 2.4 Introduction to Biopotential Amplifiers. 2.5 Introduction to Chopper Modulation Technique. 2.6 Conclusions. 3 24-Channel EEG Readout Front-End ASIC. 3.1 Introduction. 3.2 ASIC Architecture. 3.3 Current Feedback IA. 3.4 CMRR Model for Biopotential Instrumentation Amplifiers. 3.5 Programmable Gain Stage. 3.6 Test Results. 3.7 Conclusions. 4 Biopotential Readout Front-End ASICs. 4.1 Introduction. 4.2 AC Coupled Chopper Stabilized IA (ACCIA). 4.3 Chopping Spike Filter (CSF). 4.4 Low-Power Programmable Gain Stage. 4.5 Single-Channel ExG Readout Front-End. 4.6 Eight-Channel EEG Readout Front-End. 4.7 Comparison with the State-of-the-Art. 4.8 Conclusions. 5 A Complete Biopotential Acquisition ASIC. 5.1 Introduction. 5.2 ASIC Architecture. 5.3 Bias Generator Circuit. 5.4 Class-AB Buffer Architecture. 5.5 ACCIA with Coarse-Fine Servo-Loop. 5.6 Chopping Spike Filter. 5.7 Low-Power Programmable Gain Stage. 5.8 Readout Front-End Channel Test Results. 5.9 Square Wave Relaxation Oscillator. 5.10 Analog-to-Digital Converter. 5.11 Impedance Measurement and Calibration Modes. 5.12 Biological Test Results. 5.13 Summary of the Biopotential Acquisition ASIC. 5.14 Conclusions. 6 Wireless Biopotential Acquisition Systems. 6.1 Introduction. 6.2 A Wireless VEMP Acquisition System. 6.3 A Wireless Two-Channel ExG Acquisition System. 6.4 A 1cm3 Wireless Eight-Channel EEG Acquisition System. 6.5 Conclusions. 7 Conclusions. Appendix. References. Index.