Document Type thesis Author Name Spetla, Hattie Email Address hspetla at gmail.com URN etd-090209-161132 Title Split Cyclic Analog to Digital Converter Using A Nonlinear Gain Stage Degree MS Department Electrical & Computer Engineering Advisors Professor John A. McNeill, Advisor Professor Stephen J. Bitar, Committee Member Professor Donald R. Brown, Committee Member Keywords Amplifier Nonlinearity Split Calibration Cyclic ADC ADC Date of Presentation/Defense 2009-09-02 Availability unrestricted
Previous implementations of digital background calibration for cyclic ADCs have required linear amplifier behavior in the gain stage for accurate correction. Correction is digital decoding of ADC outputs to determine the original ADC input. Permitting nonlinearity in the gain stage of the ADC allows for less demanding amplifier design requirements, reducing power and size. However this requires a method of determining the value of this variable gain during digital correction. Look up tables (LUTs,) are an effective and efficient method of compensating for analog circuit imperfections. The LUT correction and calibration method discussed in this work has been simulated using Cadence integrated circuit simulation ADC specifications and MATLAB.
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