ULTRA-LOW POWER TEMPERATURE SENSOR DESIGN
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United States of America
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Mar 13, 2025
app pub date -
Sep 5, 2024
filing date -
Sep 5, 2024
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Abstract
Methods, systems, and computer products are presented herein for determining temperature using ultra-low power temperature sensing systems. An ultra-low power (ULP) temperature sensing system comprises a proportional to absolute temperature (PTAT) current source, a switched-capacitor converter electrically coupled to the PTAT current source, and a ULP analog-to-digital converter (ADC) electrically coupled to the PTAT current source and the switched-capacitor converter. The PTAT current source is configured to generate a PTAT current that varies with an operating temperature. The switched-capacitor converter is configured to generate an analog voltage signal based on the PTAT current. The ULP ADC is configured to output a digital voltage value corresponding to the analog voltage signal.
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