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:
May. 11, 2021
Filed:
Nov. 09, 2020
Xilinx, Inc., San Jose, CA (US);
Ping Chuan Chiang, Campbell, CA (US);
Mayank Raj, San Jose, CA (US);
Chuan Xie, Fremont, CA (US);
Stanley Y. Chen, Cupertino, CA (US);
Sandeep Kumar, Punggol, SG;
Sukruth Pattanagiri, Singapore, SG;
Parag Upadhyaya, Los Gatos, CA (US);
Yohan Frans, Palo Alto, CA (US);
XILINX, INC., San Jose, CA (US);
Abstract
Examples described herein generally relate to a temperature-locked loop for optical elements. In an example, a device includes a controller and a digital-to-analog converter (DAC). The controller includes a DC-controllable transimpedance stage (DCTS), a slicer circuit, and a processor. The DCTS is configured to be coupled to a photodiode. An input node of the slicer circuit is coupled to an output node of the DCTS. The processor has an input node coupled to an output node of the slicer circuit. The DAC has an input node coupled to an output node of the processor and is configured to be coupled to a heater. The processor is configured to control (i) the DCTS to reduce a DC component of a signal on the output node of the DCTS and (ii) an output voltage on the output node of the DAC, both based on a signal output by the slicer circuit.