Statistical Method of Measuring the Differential Linearity of an Analog/Digital Converter Using a Pseudo-Random Triangle Wave Stimulus.

Abstract

The differential linearity of an analog/digital converter is measured by a test method that eliminates the need for precision calibrated test equipment. A triangle waveform with a pseudo random period is applied to the analog/digital converter input. The waveform has a uniform amplitude probability density function. Therefore, any analog/digital converter input voltage has an equal chance of being sampled by the analog/digital converter. The number of times each possible analog/digital converter output code word occurs is counted by a microprocessor. These numbers are a direct measure of differential linearity with an accuracy described by the theory of repeated random sampling. (Author)

Document Details

Document Type
Technical Report
Publication Date
Jan 21, 1980
Accession Number
ADD006978

Entities

People

  • John W. Frech

Organizations

  • United States Department of the Air Force

Tags

DTIC Thesaurus Topics

  • Accuracy
  • Amplitude
  • Converters
  • Linearity
  • Mathematics
  • Microprocessors
  • Precision
  • Probability
  • Probability Density Functions
  • Sampling
  • Statistical Sampling
  • Test Equipment
  • Test Methods
  • Triangles
  • Waveforms

Readers

  • Computer Science/Computer Engineering/Data Science/Digital Signal Processing.
  • Regression Analysis.