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:
Feb. 06, 2024
Filed:
Dec. 29, 2020
Stmicroelectronics International N.v., Geneva, CH;
Atul Dwivedi, Benares, IN;
Pijush Kanti Panja, Singur, IN;
STMicroelectron nternational N.V., Geneva, CH;
Abstract
Circuitry generates base-to-emitter voltages (Vbe, Vbe) of two BJTs biased at different current densities, a base-to-emitter voltage (Vbe) of a BJT biased so Vbe is complementary to absolute temperature and has a curved non-linearity across temperature, and base-to-emitter voltages (Vbe_c, Vbe_c) of two BJTs biased by a temperature independent constant current and a current proportional to absolute temperature so Vbe_c−Vbe_c has the same but opposite curved non-linearity across temperature as Vbe. A sampling circuit samples these voltages and provides them to inputs of a loop filter. Filter outputs are quantized to produce a bitstream. The sampling circuit: when the received bit of the bitstream is zero, causes integration of Vbe−Vbeto produce a voltage proportional to absolute temperature (αΔVbe); and when the received bit of the bitstream is one, causes integration of Vbe_c−Vbe_Vbe_c to produce a negative voltage complementary to absolute temperature −Vbe_c without non-linearity across temperature.