Dear Dennis...
EN-Genius Network's Dennis Feucht answers your design
queries in his new Circuit Design Clinic!
March, 2008
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EN-Genius Network presents a new, interactive
analog design service to readers! Send us your design questions (with
relevant data; schematics in JPEG or GIF, please) for some free
engineering advice from EN-Genius Network's circuit
consultant, Dennis Feucht, on how you might solve a design problem or
improve circuit performance. Submissions may be edited for clarity or
brevity, and submitters and their email addresses will remain anonymous
(unless otherwise indicated). Please send your questions to Dennis here.
Design Techniques for New Engineers
How to Regard ADCs and DACs in Circuits
by Dennis L Feucht
One of the confusing aspects of circuit design involves circuits with multiple representations of variable values. Circuits commonly have both analog and digital components and with analog-to-digital (A/D) converters (ADCs) and D/A converters (DACs), voltages and currents that are functions of time (or waveforms) appear in both analog (continuous) and digital (discrete) representations.
To appreciate the problems that can arise, consider a simple example of an analog and digital (or mixed-signal) system.
...download complete article here (258 KB PDF)
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