Delta-Sigma analog-to-digital converter and method thereof

Details Delta-Sigma analog-to-digital converter and method thereof Delta-Sigma analog-to-digital converter and method thereof

2006-10-03

2008-11-11

Young, Brian (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Differential encoder and/or decoder

C341S155000

Reexamination Certificate

active

07450045

ABSTRACT:
A Delta-Sigma analog-to-digital converter and a method thereof are provided. According to a non-overlapping clock signal, the Delta-Sigma analog-to-digital converter performs an integration process on the difference between a plurality of input signals and the corresponding feedback signals to generate an integrated signal. Then, according to a selecting signal, the integrated signal is selectively output. Afterward, according to a latch signal, the selectively output integrated signal is quantized and latched by only one quantizer, thereby generating a digital output signal correspondingly. Accordingly, by using only one quantizer, the present invention can have the same function as the prior art which uses a plurality of quantizers, thereby decreasing the occupied chip area.

REFERENCES:
patent: 5196850 (1993-03-01), Duffy et al.
patent: 5248972 (1993-09-01), Karema et al.
patent: 2005/0116849 (2005-06-01), Melanson et al.

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