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:
Jul. 07, 2009
Filed:
Nov. 15, 2007
Barry Harvey, Los Altos, CA (US);
Barry Harvey, Los Altos, CA (US);
Intersil Americas Inc., Milpitas, CA (US);
Abstract
Provided herein are input stages, and operation amplifiers including input stages. In an embodiment, an input stage includes a complimentary differential input transconductor, first and second npn-pnp current mirrors, and first and second pnp-npn current mirrors. The complimentary differential input transconductor includes a pair of differential inputs that accept a pair of voltage signals, a first pair of complimentary differential outputs that output current signals Iand I, and a second pair of complimentary differential outputs that output current signals Iand I. Each current mirror accepts one of the current signals I, I, Iand I, and outputs a pair of current signals (e.g., I' and I″) that are proportional to the accepted current signal (e.g., I). Current signals I′ and I′ are added to produce a first output current (Iout) of the input stage. Current signals I′ and I′ are added to produce a second output current (Iout_bar) of the input stage.