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:
Jun. 06, 2023
Filed:
Sep. 29, 2021
Texas Instruments Incorporated, Dallas, TX (US);
RR Manikandan, Bangalore, IN;
Kumar Anurag Shrivastava, Chhattisgarh, IN;
Robert Floyd Payne, McKinney, TX (US);
Anant Shankar Kamath, Bangalore, IN;
Swaminathan Sankaran, Allen, TX (US);
Kishalay Datta, Kolkata, IN;
Siraj Akhtar, Richardson, TX (US);
Mark Edward Wentroble, Plano, TX (US);
Suvadip Banerjee, Bangalore, IN;
Rakesh Hariharan, Bangalore, IN;
Gurumurti Kailaschandra Avhad, Bangalore, IN;
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
In described examples, an integrated circuit includes an on-off keying (OOK) digital isolator, which includes a first circuitry, a multiplexer, an OOK modulator, an isolation barrier, an OOK envelope detector, and a second circuitry. The first circuitry generates and outputs a calibration signal. The multiplexer has a data signal input, and an input coupled to a first circuitry output. An OOK modulator input is coupled to a multiplexer output. An isolation barrier input is coupled to an OOK modulator output. An OOK envelope detector input is coupled to an isolation barrier output. The second circuitry includes an input coupled to an OOK envelope detector output, and an output coupled to an OOK envelope detector control input. The second circuitry detects a duty cycle distortion (DCD) of the OOK envelope detector output, and outputs a control signal to change the OOK envelope detector output's duty cycle based on the detected DCD.