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:
Dec. 29, 2009
Filed:
Feb. 06, 2007
James Lee Brubaker, Fremont, CA (US);
James Lee Brubaker, Fremont, CA (US);
Linear Technology Corporation, Milpitas, CA (US);
Abstract
A switch signal generator circuit that may form part of a digital to analog converter is provided. The switch signal generator circuit may include a first switch that controls a high reference gate voltage. The high reference gate voltage may provide the ON state voltage for a plurality of switches that control the coupling of a high reference voltage to the digital to analog converter. The switch signal generator circuit may include a second switch that controls a low reference gate voltage. The low reference gate voltage may provide the ON state voltage for a plurality of switches that control the coupling of a low reference voltage to the digital to analog converter. The switch signal generator circuit may also include a resistor. In one embodiment of the invention, a current conducted by the first switch and/or a current conducted by the second switch may each be proportional to a current conducted by the resistor. One of the switches in the switch generator circuit may be a P channel switch. One may be an N channel switch. In one embodiment of the invention, current conducted by the first switch may be proportional to the current conducted by the second switch. Also the current conducted by the first switch may be proportional to temperature.