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:
Aug. 31, 2010
Filed:
Mar. 23, 2009
Halil Kiper, Dallas, TX (US);
Srinath Mathur Ramaswamy, Richardson, TX (US);
Gangadhar Burra, Plano, TX (US);
Halil Kiper, Dallas, TX (US);
Srinath Mathur Ramaswamy, Richardson, TX (US);
Gangadhar Burra, Plano, TX (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
An adaptive digital pre-distortion block is used to cancel device nonlinearities to improve the overall linearity of a Delta-Sigma DAC system. In particular, the pre-distortion block may be implemented all in digital components and utilize programmable registers that change the pre-distortion transfer function either statically or dynamically, or both. Static changes can be for variation in process corners during production, whereas, dynamic changes can be used to correct nonlinear changes that can occur from environmental reasons such as voltage, temperature, aging and device stress.