MIXED-SIGNAL AND DSP DESIGN TECHNIQUES INTRODUCTION SECTION 1 SAMPLED DATA SYSTEMS SECTION 2 ADCs FOR DSP APPLICATIONS SECTION 3 DACs FOR DSP APPLICATIONS SECTION 4 FAST FOURIER TRANSFORMS SECTION 5 DIGITAL FILTERS SECTION 6 DSP HARDWARE SECTION 7 INTERFACING TO DSPs SECTION 8 DSP APPLICATIONS SECTION 9 HARDWARE DESIGN SECTION 10 TECHNIQUES INDEX
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MIXED-SIGNAL AND DSP DESIGN TECHNIQUES a
ACKNOWLEDGMENTS Thanks are due the many technical staff members of Analog Devices in Engineering and Marketing who provided invaluable inputs during this project. Particular credit is due the individual authors whose names appear at the beginning of their material. Special thanks go to Wes Freeman, Ed Grokulsky, Bill Chestnut, Dan King, Greg Geerling, Ken Waurin, Steve Cox, and Colin Duggan for reviewing the material for content and accuracy. Judith Douville compiled the index. Copyright 2000 by Analog Devices, Inc. Printed in the United States of America Walt Kester 2000 All rights reserved. This book, or parts thereof, must not be reproduced in any form without permission of the copyright owner. Information furnished by Analog Devices, Inc., is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices, Inc., for its use. Analog Devices, Inc., makes no representation that the interconnections of its circuits as described herein will not infringe on existing or future patent rights, nor do the descriptions contained herein imply the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Specifications are subject to change without notice. ISBN-0-916550-23-0
SECTION 1 INTRODUCTION MIXED-SIGNAL AND DSP DESIGN TECHNIQUES SECTION 2 SAMPLED DATA SYSTEMS Discrete Time Sampling of Analog Signals ADC and DAC Static Transfer Functions and DC Errors AC Errors in Data Converters DAC Dynamic Performance SECTION 3 ADCs FOR DSP APPLICATIONS Successive Approximation ADCs Sigma-Delta ADCs Flash Converters Subranging (Pipelined) ADCs Bit-Per-Stage (Serial, or Ripple) ADCs
SECTION 4 DACs FOR DSP APPLICATIONS DAC Structures Low Distortion DAC Architectures DAC Logic Sigma-Delta DACs Direct Digital Synthesis (DDS) SECTION 5 FAST FOURIER TRANSFORMS The Discrete Fourier Transform The Fast Fourier Transform FFT Hardware Implementation and Benchmarks DSP Requirements for Real Time FFT Applications Spectral Leakage and Windowing
SECTION 6 DIGITAL FILTERS Finite Impulse Response (FIR) Filters Infinite Impulse Response (IIR) Filters Multirate Filters Adaptive Filters SECTION 7 DSP HARDWARE Microcontrollers, Microprocessors, and Digital Signal Processors (DSPs) DSP Requirements ADSP-21xx 16-Bit Fixed-Point DSP Core Fixed-Point Versus Floating Point ADI SHARC Floating Point DSPs ADSP-2116x Single-Instruction, Multiple Data (SIMD) Core Architecture TigerSHARC : The ADSP-TS001 Static Superscalar DSP DSP Benchmarks DSP Evaluation and Development Tools
SECTION 8 INTERFACING TO DSPs Parallel Interfacing to DSP Processors: Reading Data From Memory-Mapped Peripheral ADCs Parallel Interfacing to DSP Processors: Writing Data to Memory-Mapped DACs Serial Interfacing to DSP Processors Interfacing I/O Ports, Analog Front Ends, and Codecs to DSPs DSP System Interface SECTION 9 DSP APPLICATIONS High Performance Modems for Plain Old Telephone Service (POTS) Remote Access Server (RAS) Modems ADSL (Assymetric Digital Subscriber Line) Digital Cellular Telephones GSM Handset Using SoftFone Baseband Processor and Othello Radio Analog Cellular Basestations Digital Cellular Basestations
Motor Control Codecs and DSPs in Voiceband and Audio Applications A Sigma-Delta ADC with Programmable Digital Filter SECTION 10 HARDWARE DESIGN TECHNIQUES Low Voltage Interfaces Grounding in Mixed Signal Systems Digital Isolation Techniques Power Supply Noise Reduction and Filtering Dealing with High Speed Logic INDEX
MIXED-SIGNAL AND DSP DESIGN TECHNIQUES INTRODUCTION SECTION 1 SAMPLED DATA SYSTEMS SECTION 2 ADCs FOR DSP APPLICATIONS SECTION 3 DACs FOR DSP APPLICATIONS SECTION 4 FAST FOURIER TRANSFORMS SECTION 5 DIGITAL FILTERS SECTION 6 DSP HARDWARE SECTION 7 INTERFACING TO DSPs SECTION 8 DSP APPLICATIONS SECTION 9 HARDWARE DESIGN SECTION 10 TECHNIQUES INDEX