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:
Sep. 11, 2001
Filed:
Jul. 15, 1999
Daramana G. Gata, Plano, TX (US);
Other;
Abstract
A digitally programmable switched capacitor gain and attenuation circuit that uses the same switched capacitor array for a multitude of different gain and/or attenuation settings with a single operational amplifier is disclosed. With the top plates of the capacitors connected to the operational amplifier input, the unique switching of the bottom plates of the capacitor array elements between three voltages—the circuit output, the circuit input, or a chosen reference voltage such as a power supply midpoint voltage or a ground voltage of the circuit, makes this circuit arrangement's component area smaller and the operational amplifier's design specification less demanding for applications such as a digital camera front end analog processor.