PRACTICAL ANALOG DESIGN TECHNIQUES

Transcription

1 PRACTICAL ANALOG DESIGN TECHNIQUES SINGLE-SUPPLY AMPLIFIERS HIGH SPEED OP AMPS HIGH RESOLUTION SIGNAL CONDITIONING ADCs HIGH SPEED SAMPLING ADCs UNDERSAMPLING APPLICATIONS MULTICHANNEL APPLICATIONS OVERVOLTAGE EFFECTS ON ANALOG ICs DISTORTION MEASUREMENTS HARDWARE DESIGN TECHNIQUES INDEX

2 ANALOG DEVICES TECHNICAL REFERENCE BOOKS PUBLISHED BY PRENTICE HALL Aalog-Digital Coversio Hadbook Digital Sigal Processig Applicatios Usig the ADSP-2100 Family (Volume 1:1992, Volume 2:1994) Digital Sigal Processig i VLSI DSP Laboratory Experimets Usig the ADSP-2101 ADSP-2100 Family User's Maual PUBLISHED BY ANALOG DEVICES Practical Aalog Desig Techiques Liear Desig Semiar ADSP Family Applicatios Hadbook System Applicatios Guide Applicatios Referece Maual Amplifier Applicatios Guide Mixed Sigal Desig Semiar Notes High-Speed Desig Semiar Notes Noliear Circuits Hadbook Trasducer Iterfacig Hadbook Sychro & Resolver Coversio THE BEST OF Aalog Dialogue,

3 PRACTICAL ANALOG DESIGN TECHNIQUES a

4 ACKNOWLEDGMENTS Thaks are due the may techical staff members of Aalog Devices i Egieerig ad Marketig who provided ivaluable iputs durig this project. Particular credit is due the idividual authors whose ames appear at the begiig of their material. I additio to authorig much of the material, Walter G. (Walt) Jug acted as primary techical reviewer. His commets ad revisios have added much to the accuracy ad clarity of the text ad diagrams. Lida Grimes Brado of Brado's WordService prepared the ew illustratios ad typeset the text. Erie Lehtoe of the Aalog Devices' art departmet supplied may camera-ready drawigs. Judith Douville compiled the idex, ad pritig was doe by R. R. Doelley ad Sos, Ic. Copyright 1995 by Aalog Devices, Ic. Prited i the Uited States of America Walt Kester 1995 All rights reserved. This book, or parts thereof, must ot be reproduced i ay form without permissio of the copyright ower. Iformatio furished by Aalog Devices, Ic., is believed to be accurate ad reliable. However, o resposibility is assumed by Aalog Devices, Ic., for its use. Aalog Devices, Ic., makes o represetatio that the itercoectios of its circuits as described herei will ot ifrige o existig or future patet rights, or do the descriptios cotaied herei imply the gratig of liceses to make, use, or sell equipmet costructed i accordace therewith. Specificatios are subject to chage without otice. ISBN

5 PRACTICAL ANALOG DESIGN TECHNIQUES SECTION 1 SINGLE-SUPPLY AMPLIFIERS Rail-to-Rail Iput Stages Rail-to-Rail Output Stages Sigle-Supply Istrumetatio Amplifiers SECTION 2 HIGH SPEED OP AMPS Drivig Capacitive Loads Cable Drivig Sigle-Supply Cosideratios Applicatios Circuits SECTION 3 HIGH RESOLUTION SIGNAL CONDITIONING ADCs Sigma-Delta ADCs High Resolutio, Low Frequecy Measuremet ADCs

6 SECTION 4 HIGH SPEED SAMPLING ADCs ADC Dyamic Cosideratios Selectig the Drive Amplifier Based o ADC Dyamic Performace Drivig Flash Coverters Drivig the AD9050 Sigle-Supply ADC Drivig ADCs with Switched Capacitor Iputs Gai Settig ad Level Shiftig Exteral Referece Voltage Geeratio ADC Iput Protectio ad Clampig Applicatios for Clampig Amplifiers Noise Cosideratios i High Speed Samplig SECTION 5 UNDERSAMPLING APPLICATIONS Fudametals of Udersamplig Icreasig ADC SFDR ad ENOB usig Exteral SHAs Use of Dither Sigals to Icrease ADC Dyamic Rage Effect of ADC Liearity ad Resolutio o SFDR ad Noise i Digital Spectral Aalysis Applicatios Future Treds i Udersamplig ADCs

7 SECTION 6 MULTICHANNEL APPLICATIONS Data Acquisitio System Cosideratios Multiplexig Filterig Cosideratios for Data Acquisitio Systems SHA ad ADC Settlig Time Requiremets i Multiplexed Applicatios Complete Data Acquisitio Systems o a Chip Multiplexig ito Sigma-Delta ADCs Simultaeous Samplig Systems Data Distributio Systems usig Multiple DACs SECTION 7 OVERVOLTAGE EFFECTS ON ANALOG ICs Amplifier Iput Stage Overvoltage Amplifier Output Voltage Phase Reversal Uderstadig ad Protectig Itegrated Circuits from Electrostatic Discharge (ESD)

8 SECTION 8 DISTORTION MEASUREMENTS High Speed Op Amp Distortio High Frequecy Two-Toe Geeratio Usig Spectrum Aalyzers i High Frequecy Low Distortio Measuremets Measurig ADC Distortio usig FFTs FFT Testig Troubleshootig the FFT Output Aalyzig the FFT Output SECTION 9 HARDWARE DESIGN TECHNIQUES Prototypig Aalog Circuits Evaluatio Boards Noise Reductio ad Filterig for Switchig Power Supplies Low Dropout Refereces ad Regulators EMI/RFI Cosideratios Sesors ad Cable Shieldig INDEX

9 PRACTICAL ANALOG DESIGN TECHNIQUES SINGLE-SUPPLY AMPLIFIERS HIGH SPEED OP AMPS HIGH RESOLUTION SIGNAL CONDITIONING ADCs HIGH SPEED SAMPLING ADCs UNDERSAMPLING APPLICATIONS MULTICHANNEL APPLICATIONS OVERVOLTAGE EFFECTS ON ANALOG ICs DISTORTION MEASUREMENTS HARDWARE DESIGN TECHNIQUES INDEX