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:
May. 31, 2016
Filed:
Aug. 03, 2015
Applicant:
Broadcom Corporation, Irvine, CA (US);
Inventors:
Assignee:
Broadcom Corporation, Irvine, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03M 1/14 (2006.01); H03M 1/44 (2006.01); H03M 1/46 (2006.01); H03M 1/12 (2006.01);
U.S. Cl.
CPC ...
H03M 1/462 (2013.01); H03M 1/1245 (2013.01); H03M 1/141 (2013.01); H03M 1/145 (2013.01); H03M 1/445 (2013.01);
Abstract
A multi-bit per cycle successive approximation register (SAR) analog-to-digital converter (ADC) may sample an input signal, successively approximate the sampled signal with a shrinking sub-range containing the signal, and output coarse digital codes corresponding to the sub-range. A sub-ranging stage may continue quantization over the sub-range by sampling and interpolating between a pair of zero crossing signals that bound the sub-range. The zero crossing signals may be taken from the SAR preamp output. The sub-ranging process may be pipelined recursively in multiple stages to increase throughput and efficiency.