Hybrid digital/analog noise shaping in the sigma-delta conversion
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United States of America Patent
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Jan 16, 2018
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Feb 1, 2017
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Feb 1, 2016
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Abstract
An analog/digital converter (ADC) includes an analog stage with at least one first sigma-delta modulator and includes a digital stage with at least one second sigma-delta modulator. The analog stage is configured for outputting a digital signal to the digital stage that is indicative of a noise contribution of the at least one first sigma-delta modulator. The analog stage and the digital stage may be arranged in a multi-stage noise shaping architecture (MASH) architecture.
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