Patent · US Active

Analog comparator comprising a digital offset compensation

US7884650B2 · kind B2 · utility

0Cited by

6References

23Claims

0Family size

Assignee

Advanced Micro Devices, Inc. · US

Inventors

Sreenivasa Chalamala · Dresden, DE
Matthias Baer · Hohenstein-Ernstthal, DE

Key dates

Filing date	Nov 14, 2008
Grant date	Feb 8, 2011
Priority date	—
Expiry date	Mar 4, 2029

Classification

Technology area (CPC H)Electricity
CPC primaryH03F2203/45726
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

A digital compensation of an input stage of a comparator may be achieved by providing switched load elements, which may be appropriately connected to the differential input pair of the comparator in order to match transistor characteristics of the input pair and also match the load value of the input stage. Thus, enhanced offset behavior may be accomplished without providing an external signal and/or without requiring complex reference voltages/currents.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.