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:
Jul. 24, 2001
Filed:
May. 05, 1999
Gary G. Fang, San Jose, CA (US);
David Castaneda, Sunnyvale, CA (US);
Chowdhury F. Rahim, Saratoga, CA (US);
Maxim Integrated Products, Inc., Sunnyvale, CA (US);
Abstract
A varying power supply range, that can exceed the breakdown voltage of switches within a DAC, is used to generate positive and negative generated OFF voltages substantially fixed and less than the breakdown voltage to accommodate a wide range of analog reference voltages and power supply voltages. The digital input signal having digital input levels is received by a TTL/CMOS input receiver and level shifted to logic levels having the positive and negative generate voltage levels. A circuit matches switch resistance and forms positive and negative switch ON voltage levels from the voltage levels of the input positive and negative analog reference levels. Switch drivers properly drive control terminals of the switches with appropriate voltage levels avoiding switch breakdown in response to the digital input signal.