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. 25, 2025
Filed:
Jun. 12, 2023
Applicant:
The Regents of the University of Michigan, Ann Arbor, MI (US);
Inventors:
Hsiang-Wen Chen, Ann Arbor, MI (US);
Michael P. Flynn, Ann Arbor, MI (US);
Assignee:
The Regents of The University of Michigan, Ann Arbor, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03M 1/30 (2006.01); H03M 1/06 (2006.01); H03M 1/08 (2006.01); H03M 1/50 (2006.01);
U.S. Cl.
CPC ...
H03M 1/508 (2013.01); H03M 1/0629 (2013.01); H03M 1/0854 (2013.01);
Abstract
A VCO-Based Continuous-Time (CT) delta-sigma modulator (DSM) with a noise-shaping (NS) successive approximation register (SAR) quantizer for a 3rd order noise transfer function (NTF) is presented. An anti-aliasing filter (AAF) enables this new hybrid architecture. The 28 nm CMOS prototype NSQ VCO CTΣΔ achieves 84.2 dB SNDR and 86.8 dB DR within a 1 MHz bandwidth while consuming 1.62 mW at 100 MS/s. The core circuit occupies only 0.024 mm2. No calibration or coefficient tuning is required.