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:
Mar. 16, 2004
Filed:
Apr. 21, 2003
Abdullah Yilmaz, Tucson, AZ (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
An M+N bit DAC includes an N-bit interpolation circuit for interpolating between a first voltage (Vhigh) on a first conductor ( A) and a second voltage (Vlow) on a second conductor ( B), an output amplifier ( ), a calibration interpolation circuit ( ), a memory circuit ( ) for storing error information corresponding to various values of the first voltage and second voltage, outputs of the N-bit interpolation circuit and the calibration interpolation circuit being coupled to inputs of the output amplifier, and switching circuitry responsive to a N-bit portion of a M+N input word coupling the memory to inputs of the of the calibration interpolation circuit so as to correct integral nonlinearity errors associated with the various values of the first and second voltages.