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Linearization of Multilevel, Multiwidth Digital PWM with Applications in Digital-to-Analog Conversion

The process of uniformly sampled PWM is investigated as a means of high-performance digital-to-analog conversion where comparisons of duality are made with signals in standard PCM format. Emphasis is placed on using linearization algorithms to suppress nonlinear distortion products, and a new DAC architecture is proposed that employs digital linearization together with a multiwidth and multiamplitude signal format configured within a current steering, autocalibration system topology.

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