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:
May. 27, 2003
Filed:
May. 25, 2001
Applicant:
Inventors:
Sasan Cyrusian, Scotts Valley, CA (US);
Thomas Blon, Santa Cruz, CA (US);
Assignee:
Infineon Technologies AG, , DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F 3/45 ; G06G 7/24 ; G06G 7/16 ;
U.S. Cl.
CPC ...
H03F 3/45 ; G06G 7/24 ; G06G 7/16 ;
Abstract
Transconductance-based variable gain amplifiers amplify an input voltage by converting the voltage difference to a current and then amplifying the result. At least one resistor network is adjusted depending on the magnitude of the input voltage difference and the output desired. A network of MOS transistor switches with a small footprint adjusts the resistance of the input voltage circuit in a way to insure consistent resistance and low stray capacitance.