Analog Interfacing to Embedded Microprocessors addresses the technologies and methods used in interfacing analog devices to microprocessors, providing in-depth coverage of practical control applications, op amp examples, and much more. A companion to the author's popular Embedded Microprocessor Systems: Real World Design, this new embedded systems book focuses on measurement and control of analog quantities in embedded systems that are required to interface to the real world. At a time when modern electronic systems are increasingly digital, a comprehensive source on interfacing the real world to microprocessors should prove invaluable to embedded systems engineers, students, technicians, and hobbyists. Anyone involved in connecting the analog environment to their digital machines, or troubleshooting such connections will find this book especially useful. Stuart Ball is also the author of Debugging Embedded Microprocessor Systems, both published by Newnes. Additionally, Stuart has written articles for periodicals such as Circuit Cellar INK, Byte, and Modern Electronics. Provides hard-to-find information on interfacing analog devices and technologies to the purely digital world of embedded microprocessors. Gives the reader the insight and perspective of a real embedded systems design engineer, including tips that only a hands-on professional would know. Covers important considerations for both hardware and software systems when linking analog and digital devices. Analog Interfacing to Embedded Microprocessors addresses the technologies and methods used in interfacing analog devices to microprocessors, providing in-depth coverage of practical control applications, op amp examples, and much more. A companion to the author's popular Embedded Microprocessor Systems: Real World Design, this new embedded systems book focuses on measurement and control of analog quantities in embedded systems that are required to interface to the real world. Contents......Page 3 Preface......Page 7 Introduction......Page 9 Dynamic Range......Page 11 Calibration......Page 12 Bandwidth......Page 15 Processor Throughput......Page 16 Avoiding Excess Speed......Page 17 Other System Considerations......Page 18 Sample Rate and Aliasing......Page 21 Digital-to-Analog Converters 2......Page 23 Analog-to-Digital Converters......Page 25 Types of ADCs......Page 27 Sample and Hold......Page 36 Real Parts......Page 39 Microprocessor Interfacing......Page 40 Serial Interfaces......Page 46 Internal Microcontroller ADCs......Page 51 Codecs......Page 52 Dual-Function Pins on Microcontrollers......Page 53 Design Checklist......Page 55 Temperature Sensors......Page 57 Optical Sensors......Page 69 CCDs......Page 82 Magnetic Sensors......Page 92 Motion/Acceleration Sensors......Page 96 Strain Gauge......Page 100 Time-Based Measurements 4......Page 103 Measuring Period versus Frequency......Page 105 Mixing......Page 107 Voltage-to-Frequency Converters......Page 109 Clock Resolution......Page 112 Negative Feedback and Control......Page 113 Microprocessor-Based Systems......Page 114 On-Off Control......Page 115 Proportional Control......Page 118 PID Control......Page 120 Motor Control......Page 133 Measuring and Analyzing Control Loops......Page 140 Solenoids......Page 147 Heaters......Page 153 Coolers......Page 158 Fans......Page 159 LEDs......Page 161 Stepper Motors......Page 171 DC Motors......Page 190 Brushless DC Motors......Page 194 Tradeoffs between Motors......Page 208 Motor Torque......Page 211 Ground Loops......Page 213 ESD......Page 218 High-Precision Applications 9......Page 223 Input Offset Voltage......Page 225 Input Resistance......Page 226 Frequency Characteristics......Page 227 Temperature Effects in Resistors......Page 228 Voltage References......Page 229 Temperature Effects in General......Page 231 Noise and Grounding......Page 232 Supply-Based References......Page 237 IEEE 1451.2......Page 239 4Ò20ma Current Loop......Page 0 Appendix A......Page 243 Appendix B......Page 255 Appendix C......Page 265 Glossary......Page 267 Index......Page 271 Most embedded microprocessor designs involve processing some kind of input to produce some kind of output, and one or both of these is usually analog.
