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:
Jun. 06, 2006
Filed:
Oct. 17, 2002
Khurram Muhammad, Dallas, TX (US);
Robert B. Staszewski, Garland, TX (US);
Feng Chen, Plano, TX (US);
Dirk Leipold, Plano, TX (US);
Khurram Muhammad, Dallas, TX (US);
Robert B. Staszewski, Garland, TX (US);
Feng Chen, Plano, TX (US);
Dirk Leipold, Plano, TX (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
A sigma-delta analog-to-digital converter-offers advantages such as noise shaping and high frequency operation. However, a sampling circuit needed to provide a highly oversampled discrete-time sample stream with low noise characteristics is difficult to design and implement. The present invention provides a sigma-delta mixerwith such a sampling circuit. The present invention discloses a sampling circuit using switched capacitors, andwith low noise characteristics and at the same time is capable of providing a highly oversampled discrete-time sample stream.