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:
Mar. 06, 2001
Filed:
Jan. 04, 2000
Applicant:
Inventor:
Tuong Hai Hoang, San Jose, CA (US);
Assignee:
National Semiconductor Corporation, Santa Clara, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06G 7/016 ;
U.S. Cl.
CPC ...
G06G 7/016 ;
Abstract
A bipolar analog multiplier with a greatly reduced output sensitivity to temperature. The multiplier uses the difference between the multiplier input voltages and the reference voltages to generate currents. Voltages which are logarithmically dependent on the generated currents are developed and applied to inputs of bipolar variable transconductance stages. Circuits are used to reduce ringing at the output of the multiplier.