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. 01, 2014
Filed:
Sep. 21, 2010
Giuseppe Rossi, Pasadena, CA (US);
Giuseppe Rossi, Pasadena, CA (US);
Micron Technology, Inc., Boise, ID (US);
Abstract
An analog signal chain for a CMOS active pixel sensor imaging system utilizes, for each amplification stage, a plurality of fixed gain amplifiers instead of a single multi-gain amplifier. The fixed gain amplifier corresponding to the desired gain level is selected and powered on and coupled to the input/output signal paths, while the non-selected fixed gain amplifier(s) are powered off and isolated from the input/output signal paths. Each fixed gain amplifier is operated at a gain bandwidth corresponding to the timing requirements of the imaging system and the gain of the amplifier. Thus, each fixed gain amplifier (other than the one corresponding to the maximum gain of a comparable multi-gain amplifier) operates at a lower level of power consumption than the comparable multi-gain amplifier.