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US 2021/0262864 A1Published application
Time-controlled switch capacitor based temperature sensor
AssigneeIntel IP Corporation
InventorMatthias Eberlein
Life of this patent
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Abstract
An apparatus comprises: a first circuitry to charge first and second capacitors to a predetermined voltage level; a second circuitry to discharge the first capacitor through a diode at a first time; a third circuitry to discharge the second capacitor through the diode at a second time, wherein the second time is greater than the first time; a comparator to compare a first voltage of the first capacitor with a second voltage of the second capacitor; and logic to adjust a scaling factor applied to the second voltage according to an output of the comparator.
Claims20
An apparatus comprising:
- a diode comprising a p-n junction between a silicon substrate and a well;
- a first capacitor coupled to the diode;
- a second capacitor;
- at least five switchable transistors, two or more of which are to charge the first and second capacitors, and to discharge the first and second capacitors;
- an amplifier to compare voltages on the first and second capacitors, wherein the amplifier is coupled to at least one of the first or second capacitors;
- and
- a circuitry coupled to the output of the amplifier to adjust a voltage of a terminal of the first capacitor.
4 more elements
An apparatus comprising:
- a p-n junction between a silicon substrate and a well;
- a first capacitive device coupled to the p-n junction;
- a second capacitive device;
- at least five switchable transistors, two or more of which are to charge the first and second capacitive devices, and to discharge the first and second capacitive devices.
1 more element
A system comprising:
- a memory;
- a processor coupled to the memory;
- a wireless interface to allow the processor to communicate with another device, wherein the processor includes:
- a diode comprising a p-n junction between a silicon substrate and a well;
- a first capacitor coupled to the diode;
- a second capacitor;
- at least five switchable transistors, two or more of which are to charge the first and second capacitors, and to discharge the first and second capacitors;
- a comparator to compare voltages on the first and second capacitors, wherein the comparator is coupled to at least one of the first or second capacitors;
- and
- a circuitry coupled to the output of the comparator to adjust a voltage of a terminal of the first capacitor.
7 more elements
Dependencies are inferred from the claim text.