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.

Date of Patent:
Mar. 05, 2019

Filed:

Sep. 26, 2016
Applicant:

Analog Devices Global, Hamilton, BM;

Inventors:

Venkata Aruna Srikanth Nittala, Bengaluru, IN;

Avinash Gutta, Bangalore, IN;

Assignee:

Analog Devices Global, Hamilton, BM;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03M 3/02 (2006.01); H03M 3/00 (2006.01); H03M 1/10 (2006.01);
U.S. Cl.
CPC ...
H03M 3/322 (2013.01); H03M 1/1009 (2013.01); H03M 3/30 (2013.01); H03M 3/486 (2013.01); H03M 3/43 (2013.01); H03M 3/456 (2013.01);
Abstract

A continuous-time sigma delta modulator circuit includes a scaling circuit that scales an input analog signal by a selectable range of different scaling factors in order to change a range of signal levels of the input analog signal to a desired range of signal levels in a scaled analog signal prior to conversion of the scaled analog signal to a digital signal. The scaling factor is selected based on the range of signal levels of the input analog signal in order to provide signal levels of the scaled signal within a desired range. The scaling circuit maintains current flow of the input analog signal at a substantially constant level regardless of the different scaling factors that are used to scale the input analog signal.


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