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:
Oct. 22, 2019
Filed:
Aug. 22, 2016
Silicon Laboratories Inc., Austin, TX (US);
Henry W Singor, Austin, TX (US);
Silicon Laboratories Inc., Austin, TX (US);
Abstract
An ESD protection circuit for an IC having multiple diodes coupled in series between a signal pad and a reference pad including a first diode coupled to the signal pad, a last diode coupled to the reference pad, and at least one intermediate diode. The protection circuit includes a bias network which may include one or more resistors, each coupled in parallel with a corresponding intermediate diode. One or more capacitors may be included, each coupled in parallel with a corresponding intermediate diode. For diode strings with four or more diodes, the resistances of the resistors may increase in the direction from the signal pad to the reference pad. The capacitances of the capacitors, if included, may decrease in the direction from the signal pad to the reference pad. The reference pad may be a voltage supply pad, such as a ground pad or a positive supply voltage pad.