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. 09, 2021
Filed:
Oct. 15, 2020
Qualcomm Incorporated, San Diego, CA (US);
Aliasgar Presswala, San Diego, CA (US);
Wilson Jianbo Chen, San Diego, CA (US);
Chiew-Guan Tan, San Diego, CA (US);
Reza Jalilizeinali, Oceanside, CA (US);
QUALCOMM INCORPORATED, San Diego, CA (US);
Abstract
An output driver in an integrated circuit includes a voltage shifter. The output driver has a low voltage section configured to provide a low voltage signal responsive to an input signal and a high voltage section configured to provide a high voltage signal responsive to the input signal. A first biasing circuit is configured to provide a bias to a first transistor in the high voltage section such that the bias is modified during a transition in the output signal. A second biasing circuit is configured to turn on a second transistor in the high voltage section when the output signal is at a low voltage level. The second transistor is configured to discharge a terminal of the first transistor. The input signal switches between 0 Volts and 0.9 Volts. The output signal switches between 0 Volts and 1.2 Volts or between 0 Volts and 1.8 Volts.