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:
Sep. 26, 2006
Filed:
Aug. 18, 2004
Binan Wang, Tucson, AZ (US);
Binan Wang, Tucson, AZ (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
A voltage-to-current conversion circuit includes an error amplifier (A) which amplifies a voltage difference between the drains of the first () and second () transistors of a first current mirror, wherein drain current of the first transistor is proportional to an input voltage (Vin). The output of the error amplifier is connected to the gates of the first and second transistors. A compensation capacitor is coupled between the gate and drain of the first transistor. The drain current of the second transistor flows through a cascode transistor () to an input of a second current mirror, an output transistor () of which provides a current (Ibias) which is proportional to the input voltage (Vin) as a bias current for the error amplifier, to provide stable operation.