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:
Nov. 17, 2020
Filed:
Dec. 06, 2019
Applicant:
Cirrus Logic International Semiconductor Ltd., Edinburgh, GB;
Inventors:
Leyi YiN, Austin, TX (US);
John L. Melanson, Austin, TX (US);
Wai-Shun Shum, Austin, TX (US);
Xiaofan Fei, Austin, TX (US);
Assignee:
Cirrus Logic, Inc., Austin, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03M 3/00 (2006.01); H03M 1/06 (2006.01); H03M 1/10 (2006.01); H03M 1/12 (2006.01);
U.S. Cl.
CPC ...
H03M 3/448 (2013.01); H03M 1/0668 (2013.01); H03M 3/414 (2013.01); H03M 3/506 (2013.01); H03M 1/06 (2013.01); H03M 1/10 (2013.01); H03M 1/12 (2013.01); H03M 3/30 (2013.01);
Abstract
A delta-sigma modulator may include a loop filter having a loop filter input configured to receive an input signal and generate an intermediate signal responsive to the input signal and a near-zero asymmetric quantizer configured to quantize the intermediate signal into a quantized output signal which is fed back as an input to the loop filter such that the quantized output signal has a plurality of quantization levels, wherein the plurality of quantization levels are asymmetric to zero.