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. 08, 2022
Filed:
Jan. 07, 2021
Realtek Semiconductor Corporation, Hsinchu, TW;
Chih-Chan Tu, Taipei, TW;
REALTEK SEMICONDUCTOR CORPORATION, Hsinchu, TW;
Abstract
A temperature sensing circuit includes a current source circuit, a resistor, a bandgap voltage generation circuit, a voltage-equalizing circuit and a temperature determining circuit. The current source circuit has a first current output terminal and a second current output terminal. The bandgap voltage generation circuit includes a pair of bipolar junction transistors. The voltage-equalizing circuit equalizes voltages of a first current output terminal and the second current output terminal. The temperature determining circuit includes a sampling capacitor and a calculation circuit. The sampling capacitor samples a first voltage of a first terminal of the resistor and a second voltage of a second terminal of the resistor. The calculation circuit generates a temperature value by calculating a voltage difference between the first voltage and the second voltage.