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. 23, 2018
Filed:
Nov. 02, 2016
Intel Corporation, Santa Clara, CA (US);
Altera Corporation, San Jose, CA (US);
Abstract
An input/output (I/O) circuit for an integrated circuit includes an input-output terminal, a termination circuit and an impedance compensation circuit. The termination circuit includes a node that is coupled to the input-output terminal. The termination circuit exhibits substantially constant first impedance below a first frequency of signals received at the input-output terminal. Furthermore, the termination circuit exhibits second impedance that is less than the first impedance when signals having a second frequency that is higher than the first frequency are received at the input-output terminal. The impedance compensation circuit is coupled to the input-output terminal. The impedance compensation circuit compensates for differences between the first and second impendences when the signal having the second frequency that is higher than the first frequency is received at the input-output terminal.