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:
May. 21, 2019
Filed:
Oct. 21, 2015
Silicon Laboratories Inc., Austin, TX (US);
Aaron J. Caffee, Scappoose, OR (US);
Vaibhav Karkare, San Jose, CA (US);
Silicon Laboratories Inc., Austin, TX (US);
Abstract
A low-noise voltage reference generator that utilizes internal gain and feedback to generate an output signal having reduced sensitivity to power supply variations and loading conditions is described. A method includes generating a current based on a voltage drop across a resistor. The voltage drop is based on a second voltage drop across a gate terminal of a transistor and a source terminal of the transistor. The method includes the current using a reference voltage to generate a mirrored current through a node coupled to the drain terminal of the transistor. The method includes generating a level-shifted voltage using a voltage on the node. The method includes buffering the level-shifted voltage using a power supply voltage to generate the reference voltage.