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:
Aug. 07, 2001
Filed:
Aug. 25, 1999
Narendra M. K. Rao, San Jose, CA (US);
Vishnu Balan, San Jose, CA (US);
LSI Logic Corporation, Milpitas, CA (US);
Abstract
A low voltage bipolar transconductor circuit with extended dynamic range is disclosed. The transconductance circuit provides a differential current output signal and generally comprises a first and a second differential pair of transistors coupled to a differential input signal and to a load, and having transistors area ratios of 1:r and r:1, respectively. The transconductance circuit further comprises at least one first pair of diodes having positive nodes coupled to each other and to the load, negative nodes coupled to the first differential transistors, and a diode area ratio of r:1, and a least one second pair of diodes having positive nodes coupled to each other and to the load, negative nodes coupled to the second differential transistors, and having a diode area ratio of 1:r.