EMC of Analog Integrated Circuits

ISBN-13: 9789048132294 / Angielski / Twarda / 2009 / 243 str.

Jean-Michel Redouta(c); Michiel Steyaert

Opis

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.

Spis treści

Preface. 1. INTRODUCTION. 1 The pioneers of wireless communication. 2 Evolution of awareness of electromagnetic compatibility. 3 Electromagnetic compatibility of integrated circuits. 4 Scope of this book. 2. BASIC EMC CONCEPTS AT IC LEVEL. 1 Introduction. 2 Definition of EMC, EMI, EMS and EME. 3 Sources of electromagnetic interference. 4 Electromagnetism versus integrated circuit design. 5 Intra-chip versus externally-coupled EMC. 6 Analog versus digital integrated circuits. 7 EMC in automotive applications. 8 Immunity measurement methods for IC’s: IEC 62132. 3. EMC OF INTEGRATED CIRCUITS VERSUS DISTORTION. 1 Introduction. 2 Relationship between EMI resisting design and distortion. 3 Case study 1: diode connected NMOS transistor. 4 Case study 2: NMOS source follower. 5 Case study 3: NMOS current mirror. 6 Case study 4: EMI susceptibility in ESD protections. 7 EMI induced DC shift. 4. EMI RESISTING ANALOG OUTPUT CIRCUITS. 1 Introduction. 2 Categorization of analog output structures. 3 Case study 1: EMI resisting DC current regulator. 4 Case study 2: EMI resisting LIN driver. 5. EMI RESISTING ANALOG INPUT CIRCUITS. 1 Introduction. 2 Case study 1: electromagnetic immunity of CMOS operational amplifiers. 3 Case study 2: EMI resisting instrumentation amplifier input circuit. 6. EMI RESISTING BANDGAP REFERENCES AND LOW DROPOUT VOLTAGE REGULATORS. 1 Introduction. 2 Case study 1: CMOS bandgap voltage references with a high immunity to EMI. 3 Case study 2: EMI resisting low dropout voltage regulators. 7. EPILOGUE. References. Index.

Blurb

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. In addition, as different electronic systems are compactly integrated in the same apparatus, the parasitic electromagnetic coupling between these circuits sharing the same signal, power and ground lines, is a critical design parameter that can no longer be safely excluded from a product design flow: as an example, Bluetooth, GSM and WiFi services have to coexist and operate in harmony within the crammed confinement of a modern mobile phone. 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.