Abstract
This paper describes a simple sigma delta (SigmaDelta) digital to analog converter (DAC) that is suitable for use on the simplest of microprocessors to generate constant level or slowly varying control voltages by taking advantage of a SigmaDelta network's intrinsic limit cycle behavior. The paper describes the properties of the converter, and shows that it is inherently stable. It also explains how the user can control the dc level of the DAC's analog output, and discusses the implementation of such a DAC on an industry standard microprocessor
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