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:
Aug. 15, 2017
Filed:
Jul. 29, 2016
Analog Devices, Inc., Norwood, MA (US);
Khiem Quang Nguyen, Tewksbury, MA (US);
ANALOG DEVICES, INC., Norwood, MA (US);
Abstract
Improved mechanisms for applying noise-shaped segmentation techniques in a multi-bit DAC are disclosed. Noise-shaped segmentation refers to constructing two or more noise-shaped signals whose sum equals the original digital input signal by splitting each word of the input signal into two or more sub-words and converting each sub-word by a respective sub-word DAC group. Disclosed mechanisms include determining a range of amplitudes of a portion of the input signal over a certain time period, and, when converting digital words of that portion to analog values, limiting the number of sub-word DAC groups which are used for the conversion only to a number that is necessary for generating an analog output corresponding to the portion being evaluated, which number is determined based on the tracked amplitudes and could be smaller than the total number of sub-word DAC groups. Placing unused sub-word DAC groups into a power saving mode reduces power consumption.