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. 12, 2005
Filed:
May. 19, 2003
Jeffrey Blackburn, Austin, TX (US);
Jeffrey Blackburn, Austin, TX (US);
Semtech Corporation, Camarillo, CA (US);
Abstract
Improved digital to analog converter (DAC) circuitry incorporating the ability to utilize a single DAC to generate either voltage or current outputs, and the ability to digitally adjust the gain and offset. Previous digital to analog circuitry has been limited to a single type of analog output per DAC and to the use of external precision resistors to set the gain and offset for a single DAC, or a group of DACs. By utilizing the same on-chip circuitry to supply both types of outputs, chip area, power consumption and cost is reduced while offering more flexibility to the customer. The ability to digitally adjust the gain and offset for a group of DACs eliminates the cost of external resistors, lowers the board area, and lowers the assembly cost for the end product. In addition, since gain and offset can be adjusted dynamically, maximum flexibility is provided to the customer. Digital adjustment of gain and offset can be used to calibrate for chip and system errors, and can allow more exact adjustment and external precision resistors.