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Double noise coupling ΔΣ analogue-to-digital converter

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4 Author(s)
Jung, Y. ; Kelley Eng. Center, Oregon State Univ., Corvallis, OR, USA ; Lee, S. ; Chen, C.-H. ; Temes, G.C.

A novel ΔΣ analogue-to-digital (ADC) architecture is proposed for second-order noise shaping enhancement. The new architecture is less dependent on the opamp DC gain than the earlier ΔΣ ADC with second-order noise shaping enhancement. Also, the proposed architecture reduces the complexity of the clock generator and zero optimisation compared to the earlier one. A ΔΣ ADC using the new configuration was designed and simulated. The results verify the advantages of the proposed structure.

Published in:

Electronics Letters  (Volume:48 ,  Issue: 10 )