Temperature-sensing circuit and operating method thereof

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12235169
APP PUB NO 20230204433A1
SERIAL NO

17565179

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Abstract

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A temperature-sensing circuit is provided, which includes: a search-control circuit, a voltage-reference circuit, a CTAT (complementary to absolute temperature) circuit, a digital-to-analog converter (DAC) circuit, a comparison circuit, and an SAR (successive approximation register) circuit. The search-control circuit generates a reference-voltage selection signal according to a plurality of control signals. The voltage-reference circuit selects a first reference voltage from a plurality of candidate reference voltages according to the reference-voltage selection signal, and provides a second reference voltage. The CTAT circuit converts the second reference voltage into a first comparison voltage. The DAC circuit converts the first reference voltage into a second comparison voltage. The comparison circuit compares the first comparison voltage and the second comparison voltage to generate a comparison-result signal. The SAR control circuit outputs each bit of a temperature-segment signal of an operating temperature according to the comparison-result signal. The control signals include the temperature-segment signal.

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Patent Owner(s)

  • WINBOND ELECTRONICS CORP.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chiang, Ju-An Hsinchu, TW 12 13

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