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. 28, 2016
Filed:
Sep. 04, 2015
Applicant:
Cirrus Logic, Inc., Austin, TX (US);
Inventors:
John L. Melanson, Austin, TX (US);
Stephen T. Hodapp, Austin, TX (US);
Assignee:
CIRRUS LOGIC, INC., Austin, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03M 1/30 (2006.01); H03M 3/00 (2006.01);
U.S. Cl.
CPC ...
H03M 3/30 (2013.01); H03M 3/436 (2013.01); H03M 3/44 (2013.01); H03M 3/464 (2013.01);
Abstract
Requirements placed on the first integrator of a filter in a continuous-time delta-feedback modulator may be reduced by using circuitry to reduce the speed of a signal provided to the first integrator of the modulator. The reduction in speed applied to the signal received at the first integrator may then be compensated with circuitry elsewhere in the modulator, such that the net effect of the slow down and speed up of signals does not affect the output of the modulator. The sigma-delta modulator may be implemented in converters, such as an analog-to-digital converter (ADC).