An approach to linear model-based testing for nonlinear cascaded mixed-signal systems

  • Authors:
  • Reik Müller;Carsten Wegener;Hans-Joachim Jentschel;Sebastian Sattler;Heinz Mattes

  • Affiliations:
  • Technische Universität Dresden, Germany;Infineon Technologies, Munich, Germany;Technische Universität Dresden, Germany;Infineon Technologies, Munich, Germany;Infineon Technologies, Munich, Germany

  • Venue:
  • Proceedings of the Conference on Design, Automation and Test in Europe
  • Year:
  • 2009

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Abstract

Linear Model-based Test and Diagnosis (MbT&D) has been successfully applied to single-block modules like Digital-to-Analog Converters (DACs) with a static non-linear transfer characteristic. For Multi-block modules, a diagnosis methodology is needed that can deal with cascades of several linear and nonlinear blocks. In contrast to non-linear methods, linear MbT&D methods only require matrix operations associated with relatively low computational effort. A modification of the linear MbT&D in combination with Volterra series is presented that can be applied to cascaded non-linear systems, for example, a DAC followed by a low-pass filter. A simultaneous identification of numerous frequency domain Volterra kernels is enabled, and thus, to test the compliance to data sheet specifications.