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:
Dec. 04, 2001
Filed:
May. 10, 2000
Bahram Fotouhi, Cupertino, CA (US);
Exar Corporation, Fremont, CA (US);
Abstract
The present invention provides a compensation circuit having a first and a second compensation transistor. The compensation circuit is configured for tying a transconductance, gm, of a first and a second output transistor to a conductance, gds, of the the first and second compensation transistors, respectively, such that a gm-to-gds ratio becomes fixed. The tying stabilizes and prevents movement of the location of the compensation zero. The compensation zero is created by the compensation circuits. The present invention also provides a translinear loop provided by an output and a biasing circuit. The translinear loop includes a first and a second biasing transistor and a first and a second output transistor. The first and second biasing transistors are configured to control the current flow through the first and second output transistors. The biasing circuit also includes a feedback circuit configured for matching the biasing parameters, vgs and vds, of the first and second biasing transistors to those of the first and second output transistors.