The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 22, 2006
Filed:
Sep. 20, 2005
Visvesvaraya a Pentakota, Bangalore, IN;
Abhaya Kumar, Bangalore, IN;
Raghu Nandan Srinivasa, Bangalore, IN;
Visvesvaraya A Pentakota, Bangalore, IN;
Abhaya Kumar, Bangalore, IN;
Raghu Nandan Srinivasa, Bangalore, IN;
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
Simplifying the design of buffer amplifier circuits to provide reference voltages of desired characteristics on a path. Two separate circuits may be used to provide the necessary charging (of a load connected to the path) in non-overlapping time durations. In an embodiment in which the load comprises sampling capacitors of a stage of an analog to digital converter (ADC), each of the two circuits contains a corresponding charging capacitor, with the charging capacitors charging the load in non-overlapping time durations of a hold phase. The first charging capacitor may be charged using a coarse buffer with a high drive strength and the second charging capacitor may be charged using a fine buffer with high accuracy.