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:
Jan. 28, 2020
Filed:
Mar. 15, 2017
Silicon Laboratories Inc., Austin, TX (US);
Ernest T. Stroud, Austin, TX (US);
Stefan N. Mastovich, Round Rock, TX (US);
Silicon Laboratories Inc., Austin, TX (US);
Abstract
An integrated circuit includes an input terminal configured to receive an input signal, a reference voltage node configured to provide a control voltage, and a pass transistor comprising a first terminal coupled to a first node, a control terminal coupled to the reference voltage node, and a second terminal coupled to the input terminal. The control voltage has a control voltage level sufficient to allow a signal to pass from the second terminal to the first terminal. The pass transistor is configured to linearly transfer the input signal to the first node in response to a voltage level of the input signal being below a first voltage level and configured to transfer a voltage-limited version of the input signal to the first node in response to the voltage level being above the first voltage level. At most, a negligible DC current flows through the input terminal into the second terminal.