International Telemetering Conference Proceedings / October 20-23, 2003 / Riviera Hotel and Convention Center, Las Vegas, Nevada / The advent of a new generation of analog to digital converters (ADC’s) provides the aerospace
signal-conditioning engineer with many design advantages, trade-offs and challenges for their next
generation of signal conditioning systems. These advantages include increased range, resolution,
accuracy, channel-count and sampling rate. However, in order to capitalize on these advantages, it
is important to understand the trade-offs involved and to specify these systems correctly.
Trade-offs include:
• Analog vs. Digital signal conditioning
• Implementation issues such as 12-bits vs. 16-bits (or even 24-bits)
• Topology issues such as multiplexers vs. multiple ADC’s
• Filter-type selection
• Sigma-Delta vs. Successive Approximation ADC’s.
Specification challenges include:
• Total DC error vs. gain and offset (and drift, excitation, DNL, crosstalk, etc.)
• ENOB vs. SINAD (or THD, SNR or Noise)
• Coherency issues such as filter phase distortion vs. delay
This paper will discuss some of these aspects and attempts to produce a succinct specification for the
next generation of airborne signal conditioning, while also outlining some of the lessons learned in
developing the same.
| Identifer | oai:union.ndltd.org:arizona.edu/oai:arizona.openrepository.com:10150/605360 |
| Date | 10 1900 |
| Creators | Sweeney, Paul |
| Contributors | ACRA CONTROL |
| Publisher | International Foundation for Telemetering |
| Source Sets | University of Arizona |
| Language | en_US |
| Detected Language | English |
| Type | text, Proceedings |
| Rights | Copyright © International Foundation for Telemetering |
| Relation | http://www.telemetry.org/ |
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