Low-Cost 14-Bit Current-Steering DAC With a Randomized Thermometer-Coding Method

  title={Low-Cost 14-Bit Current-Steering DAC With a Randomized Thermometer-Coding Method},
  author={Da-Huei Lee and Tai-Haur Kuo and Kow-Liang Wen},
  journal={IEEE Transactions on Circuits and Systems II: Express Briefs},
A dynamic element-matching (DEM) method, i.e., randomized thermometer coding (RTC), for low-cost current-steering digital-to-analog converter (DAC) design is proposed. The proposed RTC method exhibits randomized starting-element selection, consecutive-element selection, and low-element switching activity. It can be used to significantly suppress the harmonic distortion caused by a large mismatch of small-area transistors, and, thus, very low cost DACs can be realized. With the proposed RTC, a… CONTINUE READING
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