Chopping technique for continuous time sigma-delta ADCs...

Details Chopping technique for continuous time sigma-delta ADCs... Chopping technique for continuous time sigma-delta ADCs...

2008-12-31

2010-11-23

Young, Brian (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Analog to digital conversion

C341S172000

Reexamination Certificate

active

07839316

ABSTRACT:
A chopping transconductor includes an transconductor input stage coupled with input signals of the chopping transconductor; a chopping switch coupled with an output of the transconductor input stage, the chopping switch having a switch output; and a cascode transistor, wherein the switch output is coupled to an output of the chopping transconductor through the cascode transistor. The chopping transconductor may be used in an analog-to-digital converter to isolate chopping switches from junctions with quantization noise.

REFERENCES:
patent: 5148167 (1992-09-01), Ribner
patent: 6285311 (2001-09-01), Lewicki
patent: 7310016 (2007-12-01), Chuang

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