Pipeline ad converter

Details Pipeline ad converter Pipeline ad converter

2005-01-04

2005-01-04

Tokar, Michael (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Analog to digital conversion

C341S155000, C341S143000

Reexamination Certificate

active

06839016

ABSTRACT:
A pipeline AD converter comprising a cascade of AD-converter stages, whereby the sampling noise generated by a former stage of the cascade is AD-converted by the next stage in the cascade and the digital signals of the stages are combined to generate an error-reduced digital representation of the analog input signal. Applying the input signal to a synchronous ΣΔ modulator and to an asynchronous ΣΔ modulator and comparing the output signals of the ΣΔ modulators generates the sampling noise.

REFERENCES:
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patent: 6600440 (2003-07-01), Sakurai
patent: 6606042 (2003-08-01), Sonkusale et al.
patent: 6734818 (2004-05-01), Galton
Roza, Engel, IEEE Transactions on Circuit and System II, vol. 44, No. 11, Nov. 1997, p. 907-p. 914.

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