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:
Mar. 04, 2014
Filed:
Jul. 17, 2012
Mark Reisiger, San Jose, CA (US);
Mark Reisiger, San Jose, CA (US);
Analog Devices, Inc., Norwood, MA (US);
Abstract
Apparatus and methods for amplifier power supply control are provided. In certain implementations, an amplifier includes an input amplification stage and a power supply control block for generating a power high supply and a power low supply for the input amplification stage. The power supply control block receives a reference signal indicative of a common-mode input voltage of the amplifier, and the power supply control block adjusts a voltage level of the power high and power low supplies while maintaining a substantially constant voltage difference between the power high and power low supplies. The power supply control block changes the voltage level of the power high and power low supplies based on the reference signal such that the voltage levels of the power high and power low supplies move in relation to the common-mode input voltage.