Using different weights in DACs
2002 (English)In: Proc. 4th IEE Int. Conf. on Advanced A/D and D/A Conversion Techniques and their Applications, ADDA'02, 2002Conference paper (Refereed)
In this paper we discuss some properties of different codes with their respective sets of weights to be used in digital-to-analog converters (DACs). The thermometer (unratioed) code is widely used instead of a binary code in the most significant bits of a segmented DAC to reduce errors due to weight and timing mismatch. The binary and thermometer codes are two extremes, where the first offers a small digital hardware cost and the latter a large cost. We have investigated some of the properties of these codes and codes with properties in-between; such as linear, polynomial, and segmented codes. Some new ideas and results on using different sets of weights and how to generate them are presented. We present simulation results for some low-order polynomial codes.
Place, publisher, year, edition, pages
digital-analog conversion, nonlinearities, codes
National CategoryOther Electrical Engineering, Electronic Engineering, Information Engineering
IdentifiersURN: urn:nbn:se:liu:diva-50932OAI: oai:DiVA.org:liu-50932DiVA: diva2:272337