Pipelined analog-to-digital converter

Details Pipelined analog-to-digital converter Pipelined analog-to-digital converter

2009-01-16

2010-12-07

Nguyen, Khai M (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Analog to digital conversion

C341S161000

Reexamination Certificate

active

07847720

ABSTRACT:
A pipelined analog-to-digital converter includes at least one multiplying digital-to-analog converter and at least one sub-ADC. The multiplying digital-to-analog converter includes at least one first capacitor, at least one second capacitor, an amplifier, and a plurality of switches. The amplifier is coupled to the first and the second capacitors. The switches control a connection between the first and the second capacitors according to a first control signal, a second control signal and a digital signal. In a first period, the first capacitor is connected to the second capacitor in parallel. In a second period, the first capacitor is connected to the second capacitor in series. At least one switch among the switches is composed of a transistor. The sub-ADC provides a digital signal according to the first and second control signals.

REFERENCES:
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patent: 6756928 (2004-06-01), Kawahito et al.
patent: 6967610 (2005-11-01), Sutardja et al.
patent: 7307572 (2007-12-01), Garrity et al.
patent: 7332941 (2008-02-01), Ishii
patent: 7408496 (2008-08-01), Cho
patent: 7612700 (2009-11-01), Kawahito et al.

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