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:
Feb. 07, 2006
Filed:
Mar. 02, 2004
Simon Bevan Churchill, Whitchurch, GB;
Gaurang Arvind Shah, San Jose, CA (US);
David Webb, Hungerford, GB;
Bharath Mandyam, Sunnyvale, CA (US);
Simon Bevan Churchill, Whitchurch, GB;
Gaurang Arvind Shah, San Jose, CA (US);
David Webb, Hungerford, GB;
Bharath Mandyam, Sunnyvale, CA (US);
Maxim Integrated Products, Inc., Sunnyvale, CA (US);
Abstract
Multi-channel high resolution segmented resistor string digital-to-analog converters (DACs) suitable for realization in a single integrated circuit. The DACs incorporate a primary resistor string shared by all channels, and one or more additional pluralities of additional resistor strings for additional resolution. The primary resistor string may be buffered to limit the effect of loading thereon by the plurality of resistor strings coupled thereto. Current sources may also be coupled to the resistor strings coupled to the primary resistor string to also avoid loading of the primary resistor string. A trimmable resistor string of fewer bits may be connected to the primary resistor string for laser trimming. In the embodiment disclosed, a plurality of secondary and tertiary resistor strings are used, with leapfrogging minimizing the switches required.