Broadband opamps for multi-channel communication systems make strong demands on linearity performance. This book, written for Analog CMOS designers, presents a thorough analysis of the nonlinear behaviour of circuits, to obtain opamps with low distortion.

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List of Figures. List of Tables. Symbols and Abbreviations. Foreword. Preface. Acknowledgement. 1: Introduction. 1.1. Motivation. 1.2. Earlier Work. 1.3. Design Issues for Low Nonlinear Distortion. 1.4. Outline. 1.5. Summary. 2: Specification and Analysis of Nonlinear Circuits. 2.1. Linearity Specifications. 2.2. Volterra Series. 2.3. Phasor Method. 2.4. Concluding Remarks. 3: Biasing and Opamp Modeling for Low Distortion. 3.1. Biasing for Robust Linearity Performance. 3.2 Opamp Modeling for Nonlinear Analysis. 4: Nonlinear Analyzes of Feedback Miller Opamp. 4.1. The Non-Inverting. 4.2. The Inverting Configuration. 4.3. Concluding Remarks. 5: Opamp Circuits with High Linearity Performance. 5.1. Measurement System. 5.2. A 1.8V CMOS Opamp with -77.5dB HD2 and HD3 at 80MHz. 5.3. A 3.3V CMOS Opamp with -80dB HD3 at 80 MHz. 5.4. A 3.3V CMOS Current Opamp with -63dB HD3 at 100MHz. 5.5. A 3.3V CMOS Unity-Gain Opamp with -80dB HD3 at 10MHz. 5.6. Concluding Remarks. 6: Conclusions and Discussions. 6.1. Opamp Topologies Versus Linearity. Appendix A:Transistor Model. Appendix B: Closed Loop Opamp Transfer Functions. Appendix C: Open Loop Opamp Transfer Functions.