Interface for hybrid sigma-delta data converter

Details Interface for hybrid sigma-delta data converter Interface for hybrid sigma-delta data converter

2008-04-21

2009-10-27

Nguyen, Khai M (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Differential encoder and/or decoder

C341S155000

Reexamination Certificate

active

07609189

ABSTRACT:
A hybrid sigma-delta converter that includes a continuous-time circuit that processes an input signal and generates a first output signal, an interface circuit that receives the first output signal from the continuous-time circuit and filters the first output signal thereby generating a second output signal, and a discrete-time circuit that processes the second output signal received from the interface circuit. The interface circuit further reduces the coupling of noise generated from the operation of the discrete time circuit to the preceding continuous-time circuit.

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patent: 7042377 (2006-05-01), Oliaei
patent: 7095345 (2006-08-01), Nguyen et al.
patent: 7227481 (2007-06-01), del Mar Chamarro Marti et al.
patent: 7495593 (2009-02-01), Wang
Khiem Nguyen et al. “A 106-dB SNR Hybrid Oversampling Analog-to-Digital Converter for Digital Audio”, IEEE Journal of Solid-State Circuits, vol. 40, No. 12, Dec. 2005, 8 pgs.
Paul Morrow et al. “A 0.18μm 102dB-SNR Mixed CT SC Audio-Band ΔΣ ADC”, 2005 IEEE International Solid-State Circuits Conference, 3 pgs.

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