EMC of Analog Integrated Circuits (eBook)
X, 243 Seiten
Springer Netherland (Verlag)
978-90-481-3230-0 (ISBN)
Environmental electromagnetic pollution has drastically increased over the last decades. The omnipresence of communication systems, various electronic appliances and the use of ever increasing frequencies, all contribute to a noisy electromagnetic environment which acts detrimentally on sensitive electronic equipment. Integrated circuits must be able to operate satisfactorily while cohabiting harmoniously in the same appliance, and not generate intolerable levels of electromagnetic emission, while maintaining a sound immunity to potential electromagnetic disturbances: analog integrated circuits are in particular more easily disturbed than their digital counterparts, since they don't have the benefit of dealing with predefined levels ensuring an innate immunity to disturbances. The objective of the research domain presented in EMC of Analog Integrated Circuits is to improve the electromagnetic immunity of considered analog integrated circuits, so that they start to fail at relevantly higher conduction levels than before.
Environmental electromagnetic pollution has drastically increased over the last decades. The omnipresence of communication systems, various electronic appliances and the use of ever increasing frequencies, all contribute to a noisy electromagnetic environment which acts detrimentally on sensitive electronic equipment. Integrated circuits must be able to operate satisfactorily while cohabiting harmoniously in the same appliance, and not generate intolerable levels of electromagnetic emission, while maintaining a sound immunity to potential electromagnetic disturbances: analog integrated circuits are in particular more easily disturbed than their digital counterparts, since they don't have the benefit of dealing with predefined levels ensuring an innate immunity to disturbances. The objective of the research domain presented in EMC of Analog Integrated Circuits is to improve the electromagnetic immunity of considered analog integrated circuits, so that they start to fail at relevantly higher conduction levels than before.
Preface 6
Contents 8
1 Introduction 12
The pioneers of wireless communication 12
Evolution of awareness of electromagnetic compatibility 14
Electromagnetic compatibility of integrated circuits 16
Scope of this book 18
2 Basic EMC Concepts at IC Level 21
Introduction 21
Definition of EMC, EMI, EMS and EME 22
Sources of electromagnetic interference 24
Electromagnetism versus integrated circuit design 25
Electrical length 25
Near field versus far field 27
Radiation of a conductor 29
Basic EMC antenna concepts 30
Radiated, induced and conducted disturbances 32
Practical example 34
Intra-chip versus externally-coupled EMC 37
Analog versus digital integrated circuits 39
EMC in automotive applications 41
Immunity measurement methods for IC's: IEC 62132 41
3 EMC of Integrated Circuits versus Distortion 46
Introduction 46
Relationship between EMI resisting design and distortion 48
Linear distortion 48
Nonlinear distortion (rectification) 49
Weak and strong nonlinear distortion 52
Case study 1: diode connected NMOS transistor 54
Case study 2: NMOS source follower 59
Case study 3: NMOS current mirror 61
Capacitor decoupling the mirror node 66
Low-pass R-C filter in the mirror node 67
Low-pass R-C filter in the drain of M1 69
EMI resisting (4-transistor) current mirror 70
EMI resisting (Wilson totem pole) current mirror 76
Comparison of EMI susceptibility of current mirrors 78
Case study 4: EMI susceptibility in ESD protections 81
Weak nonlinear distortion in ESD protections 82
Strong nonlinear distortion in ESD protections 87
ESD protections: general conclusions 89
EMI induced DC shift 90
4 EMI Resisting Analog Output Circuits 92
Introduction 92
Categorization of analog output structures 94
Common-drain output circuits 94
Common-source output circuits 97
Comparing the electromagnetic susceptibility 98
Large EMI amplitudes 102
Case study 1: EMI resisting DC current regulator 104
EMI issues in a classic DC current regulator 104
EMI issues: small signal analysis 106
EMI issues: large signal analysis 108
Decoupling capacitor Cd 109
DC current regulator with a high immunity to EMI 111
Measurements 115
Case study 2: EMI resisting LIN driver 116
Classic LIN driver 120
Linear operation mode 123
Nonlinear operation mode 125
EMI resisting LIN driver topology: LIN driver 1 126
EMI path 1 127
EMI path 2 131
Slope control function 138
Measurements 138
EMI resisting LIN driver topology: LIN driver 2 142
Smart-power mode 142
Slope pumping reduction 145
Measurements 147
5 EMI Resisting Analog Input Circuits 149
Introduction 149
Case study 1: electromagnetic immunity of CMOS operational amplifiers 150
Asymmetric slew rate 153
Strong nonlinear behavior of the input differential pair 156
Weak nonlinear behavior of the input differential pair 157
EMI induced offset in a classic differential pair 157
Classic differential pair using source degeneration 162
Cross-coupled differential pair 163
Differential pair with low-pass R-C filter 166
Improved cross-coupled differential pair 168
Source-buffered differential pair 169
Comparison 177
EMI induced offset measurement setups 177
Measurements 185
Case study 2: EMI resisting instrumentation amplifier input circuit 190
Classic instrumentation amplifier input circuit 191
Input circuit using current sources modulation 197
Simulations 201
6 EMI Resisting Bandgap References and Low Dropout Voltage Regulators 204
Introduction 204
Case study 1: CMOS bandgap voltage references with a high immunity to EMI 208
EMI injection in a Kuijk bandgap reference (NPD) 209
Small signal analysis 212
Large signal analysis 213
EMI resisting Kuijk bandgap reference (PPD) 215
Small signal analysis 217
Large signal analysis 218
EMI resisting Kuijk bandgap reference (PPDAL) 218
Small signal analysis 220
Large signal analysis 221
Startup circuit and biasing 222
Measurements 222
Case study 2: EMI resisting low dropout voltage regulators 227
EMI issues in LDO voltage regulator circuits 227
Design example 232
7 Epilogue 234
References 237
Index 247
| Erscheint lt. Verlag | 10.10.2009 |
|---|---|
| Reihe/Serie | Analog Circuits and Signal Processing | Analog Circuits and Signal Processing |
| Zusatzinfo | X, 243 p. |
| Verlagsort | Dordrecht |
| Sprache | englisch |
| Themenwelt | Naturwissenschaften ► Physik / Astronomie ► Festkörperphysik |
| Technik ► Elektrotechnik / Energietechnik | |
| Technik ► Nachrichtentechnik | |
| Schlagworte | Analog • Analog integrated circuits • CMOS • Electromagnetic Compatibility • electromagnetic interference • EMC • EMI • Integrated circuit • static-induction transistor • Transistor |
| ISBN-10 | 90-481-3230-4 / 9048132304 |
| ISBN-13 | 978-90-481-3230-0 / 9789048132300 |
| Haben Sie eine Frage zum Produkt? |
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