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:
Apr. 05, 2022
Filed:
Dec. 04, 2020
Applicant:
Nxp Usa, Inc., Austin, TX (US);
Inventor:
Wenzhong Zhang, Austin, TX (US);
Assignee:
NXP USA, Inc., Austin, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03M 1/00 (2006.01); H03M 1/12 (2006.01); H03K 17/56 (2006.01);
U.S. Cl.
CPC ...
H03M 1/1205 (2013.01); H03K 17/56 (2013.01);
Abstract
A multi-branch analog multiplexer (anamux) includes protection circuitry to help dissipate both positive and negative injected current without increasing the size of hardening transistors in each branch, thereby avoiding increased leakage current and enabling an analog to digital converter to operate with the required accuracy. The protection circuitry is tied to the body of the hardening transistor to lower the threshold voltage of the hardening device, thereby enabling the hardening device to handle more of the injected current.