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. 23, 2019
Filed:
Oct. 27, 2016
Analog Devices, Inc., Norwood, MA (US);
Yukihisa Handa, Arlington, MA (US);
Nathan R. Carter, Arroyo Grande, CA (US);
Analog Devices, Inc., Norwood, MA (US);
Abstract
The present disclosure provides systems and methods to provide a constant common mode voltage at the input terminals of a difference amplifier. A difference amplifier can receive an input signal and can deliver an amplified version of the received input signal at an output of the difference amplifier. In a system where a difference amplifier can receive an output of a digital-to-analog converter (DAC), the DAC performance can deteriorate in situations where common mode voltage at the input terminals of the difference amplifier are changing. A difference amplifier including feedback circuitry can provide a constant common mode voltage at the input terminals of the difference amplifier, leading to improved performance in a system where the difference amplifier receives an input signal from a DAC.