System and method for analog-to-digital conversion

Details System and method for analog-to-digital conversion System and method for analog-to-digital conversion

2011-07-12

2011-07-12

Jeanglaude, Jean B (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Analog to digital conversion

C341S155000

Reexamination Certificate

active

07978115

ABSTRACT:
A system for converting an analog signal to a digital signal may include a plurality of converter stages. One of the converter stages may include a multiplying digital-to-analog converter (MDAC) and an analog-to-digital subconverter (ADSC). The MDAC may be configured to (i) receive from a previous stage a first residue analog signal and a first idealized digital signal representing a first portion of the digital signal and corresponding to the first residue analog signal; (ii) convert the first idealized digital signal to an idealized analog signal; and (iii) output a second residue analog signal based on the difference between the first residue analog signal and the idealized analog signal. The ADSC may be configured to convert the second residue analog signal into a second idealized digital signal representing a second portion of the digital signal and corresponding to the second residue analog signal, the ADSC comprising a sloping analog-to-digital converter.

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