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:
Oct. 23, 2001
Filed:
Feb. 04, 2000
Kimo Y. F. Tam, Arlington, MA (US);
Kenneth A. Lawas, Arlington, MA (US);
Analog Devices, Inc., Norwood, MA (US);
Abstract
A non-inverting feedback amplifier with high disabled impedance includes a disableable signal amplifier; a feedback network having an input node, a feedback node and a reference node; the signal amplifier having a first input for receiving an input signal and a second input for receiving a feedback signal from the feedback node; and a reference buffer including a reference amplifier with its output directly connected to the reference node without additional series switching elements, a first input connected to a reference voltage, and a second input connected to its own output for mirroring at its output the reference voltage at its first input when the reference buffer and signal amplifier are enabled and presenting a high impedance between the feedback network and the reference voltage when the signal amplifier and reference buffer are disabled.