Temperature sensor including diode and capacitor
AssigneesSamsung Electronics Co., Ltd., Industry-Academic Cooperation Foundation, Yonsei University
InventorsSungsik PARK, Youngcheol CHAE
Life of this patent
Estimating the term…
Abstract
A temperature sensor configured to generate an output signal corresponding to a sensed and/or measured temperature includes: a diode including a cathode coupled to a ground node; a first capacitor including a first end coupled to the ground node; a switch circuit configured to connect a second end of the first capacitor to a positive voltage node or an anode of the diode according to a control signal; switch control circuitry configured to generate the control signal based on a reference voltage with a voltage of the anode; and an output signal generator configured to generate the output signal corresponding to the sensed temperature based on a frequency of the control signal.
Claims22
A temperature sensor configured to generate an output signal corresponding to a sensed temperature, the temperature sensor comprising:
- a diode including a cathode coupled to a ground node;
- a first capacitor including a first end coupled to the ground node;
- a switch circuit configured to connect a second end of the first capacitor to a positive voltage node or an anode of the diode based on a control signal;
- switch control circuitry configured to generate the control signal based on a reference voltage and a voltage of the anode of the diode;
- and
- an output signal generator configured to generate the output signal based on a frequency of the control signal.
A temperature sensor configured to generate an output signal corresponding to a sensed temperature by switching between a first phase and a second phase, the temperature sensor comprising:
- a first capacitor and a diode;
- a first switch circuit configured to charge the first capacitor to a positive voltage in the first phase, and discharge the first capacitor through the diode in the second phase;
- a reference voltage generator configured to generate a reference voltage independent of the discharge of the first capacitor;
- switch control circuitry configured to control the first switch circuit and terminate the second phase based on a discharge voltage of the first capacitor and the reference voltage;
- and
- an output signal generator configured to generate the output signal corresponding to the sensed temperature based on a duration of the second phase.
-19. (canceled)
A temperature sensor configured to generate an output signal corresponding to a sensed temperature by switching between a first phase and a second phase, the temperature sensor comprising:
- a plurality of switches and a diode;
- a first capacitor configured to be charged with a positive voltage during the first phase, and discharged through the diode during the second phase, by at least one of the plurality of switches;
- a second capacitor configured to be discharged through the diode during the first phase, and charged with the positive voltage during the second phase, by at least one of the plurality of switches;
- switch control circuitry configured to maintain a duration of the first phase, and terminate the second phase, based on a reference voltage and a voltage of the first capacitor;
- and
- an output signal generator configured to generate the output signal corresponding to the sensed temperature based on a duration of the second phase.
(canceled)
Dependencies are inferred from the claim text.