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. 28, 2017
Filed:
May. 02, 2016
Applicant:
Texas Instruments Incorporated, Dallas, TX (US);
Inventor:
Patrick P. Siniscalchi, Murphy, TX (US);
Assignee:
Texas Instruments Incorporated, Dallas, TX (US);
Primary Examiner:
Int. Cl.
CPC ...
H03F 3/45 (2006.01); H03F 1/02 (2006.01);
U.S. Cl.
CPC ...
H03F 3/45273 (2013.01); H03F 1/0261 (2013.01); H03F 3/4521 (2013.01); H03F 3/45183 (2013.01); H03F 3/45 (2013.01); H03F 2203/45112 (2013.01); H03F 2203/45454 (2013.01); H03F 2203/45476 (2013.01); H03F 2203/45508 (2013.01);
Abstract
Disclosed examples include amplifier circuits with a first stage to amplify an input voltage signal according to a first stage gain to provide a first stage output voltage signal, and a second stage to provide an amplifier output voltage signal. A bias circuit provides an amplifier bias current signal to a current mirror circuit coupled with the first stage to control a first stage bias current, and an adjustment circuit to reduce the amplifier bias current signal and increase the first stage gain when the input voltage signal is near a first supply voltage or a second supply voltage.