A Digital-to-Analog Converter for Extreme Environments


This paper presents a method and an apparatus named as Internal Calibrated Digital to Analog Converter (IC-DAC), which automatically searches the best configuration (setup of switches) to achieve close-to-ideal voltage output of an extended R/2R ladder network for any digital input. The configurations are stored in a mapping matrix, which can be rewritten by an internal calibration process. A prototype with a hardware end and a software end was developed and proved to perform robustly with many times higher accuracy than traditional R/2R DAC.

  • Abstract
  • Introduction
  • Method
  • Implementation
  • Conclusions
  • References

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