Key result
Novel feedback in multibit sigma-delta A/D converters reduces DAC nonlinearity sensitivity and improves simulated performance.
Why the study?
The sensitivity of multibit oversampled sigma-delta A/D converters to DAC nonlinearity limits overall resolution.
A novel feedback arrangement in a multibit oversampled sigma-delta A/D converter reduces sensitivity to DAC nonlinearity in simulations.
Answers are grounded in this paper and cite their sources.
May improve sigma-delta ADC robustness in simulation; leaves open hardware validation before design adoption.
A new architecture is presented for a multibit oversampled σ-Δ A/D convenor. A novel feedback arrangement is employed to reduce the sensitivity of the overall resolution to the nonlnearity of the multibit DAC. Simulations confirm the improved performance achieved by the proposed structure.
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Hairapetian et al. (1991) studied this question. A novel feedback arrangement in a multibit oversampled sigma-delta A/D converter reduces the sensitivity of overall resolution to DAC nonlinearity and improves performance in simulations.
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