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:
Jan. 25, 2000
Filed:
Dec. 23, 1997
T Lakshmi Viswanathan, Addison, TX (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
A method for producing gain in an electrical signal includes providing a variable resistance system having a plurality of transistors connected in parallel and controlling the resistance of the variable resistance system by applying a voltage to a control node of each of the plurality of transistors to selectively turn each transistor on or off. The method also includes receiving a differential input voltage and applying the differential input voltage across the variable resistance system to produce a signal current. The method also includes providing at least a portion of the signal current to a load resistance system to generate a differential output voltage and setting the ratio of the differential output voltage to the differential input voltage by controlling the voltage applied to the control node of each of the plurality of transistors.