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:
Feb. 11, 2003
Filed:
Jun. 07, 2002
Nathan Carter, Arroyo Grande, CA (US);
JoAnn P. Close, Los Altos, CA (US);
Analog Devices, Inc., Norwood, MA (US);
Abstract
A bipolar rail-to-rail input stage includes complementary differential input pairs, and a switching circuit which makes one or the other of the input pairs active depending on the relationship between a transition threshold voltage V and the common mode input voltage V . A transition threshold voltage selection circuit provides a selectable one of at least two different V voltages to the switching circuit in response to a select signal. In one embodiment, the select signal has logic “high”, logic “low”, and “floating” states. The transition threshold voltage selection circuit provides a first V voltage when the select signal is in a first state, a second V voltage when the select signal is in a second state, and disables the input stage when the select signal is in a third state.