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. 14, 2009
Filed:
May. 30, 2006
Joseph A. Cetin, San Diego, CA (US);
Matthew D. Sienko, La Jolla, CA (US);
Jason F. Muriby, San Diego, CA (US);
Joseph A. Cetin, San Diego, CA (US);
Matthew D. Sienko, La Jolla, CA (US);
Jason F. Muriby, San Diego, CA (US);
Cypress Semiconductor Corporation, San Jose, CA (US);
Abstract
An improved amplifier circuit is provided herein with a gain stage and a bias stage, which may be switchably connected to the gain stage during power-up operations. The bias stage reduces a power-up time associated with the gain stage, while minimizing current consumption in the next amplifier stage and improving battery life. For example, during power-up, the bias stage may enable the output voltage of the gain stage to gradually rise from a ground potential to a desired common mode level in a highly controlled and predictable manner. By preventing 'glitches' in the output voltage, the bias stage eliminates the need for inserting switches in the signal path between the output nodes of the gain stage and input nodes of the next amplifier stage.