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:
Nov. 20, 2007
Filed:
May. 24, 2005
Sergey V. Alenin, Tucson, AZ (US);
Henry Surtihadi, Tucson, AZ (US);
Sergey V. Alenin, Tucson, AZ (US);
Henry Surtihadi, Tucson, AZ (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
An amplifier () includes a first stage () including differentially coupled first (Q) and second (Q) input transistors and a controlled active load circuit (). A second stage () includes differentially coupled third (Q) and fourth (Q) input transistors and a load circuit (Q). A first output (A) of the first stage () is coupled to a first input of the second stage (), a second output (B) of the first stage () being coupled to a second input of the second stage (). A common mode feedback amplifier () has an input coupled to receive a common mode signal () from the second stage () for producing an amplified common mode signal () on a control input of the controlled active load circuit () to provide fast settling of an output (Vout) of the second stage without substantially increasing amplifier noise.