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:
Jun. 24, 2003
Filed:
May. 30, 2002
Applicant:
Inventors:
Assignee:
Lattice Semiconductor Corporation, Hillsboro, OR (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K 5/22 ; H02M 1/100 ;
U.S. Cl.
CPC ...
H03K 5/22 ; H02M 1/100 ;
Abstract
An improved programmable transconductor can be efficiently implemented utilizing a programmable resistor circuit that allows for only a selected portion of the resistor circuit (associated with a desired transconductor gain) to be coupled between summing nodes of the transconductor. Additional switching circuits can be used to reduce gain errors associated with the switches used to implement the aforementioned solution. Additionally, the improved programmable transconductor can be integrated into fully differential programmable analog integrated circuits, thereby enhancing the performance of such integrated circuits.