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. 29, 2014
Filed:
Jan. 24, 2013
Peijun Wang, Austin, TX (US);
Robert S. Jones, Austin, TX (US);
Peijun Wang, Austin, TX (US);
Robert S. Jones, Austin, TX (US);
Freescale Semiconductor, Inc., Austin, TX (US);
Abstract
A sigma delta modulator includes a first circuit that receives an analog signal and provides an intermediate signal and a first quantizer signal and further includes a first quantizer that receives the first quantizer signal and provides a first quantizer output. Also included are a second input circuit that receives the intermediate signal and provides a second quantizer signal and a second quantizer that receives the second quantizer signal and provides a second quantizer output. The first quantizer includes a programmable circuit having a first reference and a negative of the first reference, a first comparator having a first input coupled to the first quantizer signal, a second input coupled to the first reference and a second comparator having a second input coupled to the first quantizer signal a second input coupled to the negative. The first and second comparators have outputs that form the output of the first quantizer.