US 10,481,015 B2Granted

Temperature sensors

AssigneeSK hynix Inc.

InventorsSang Ah Hyun, Hee Joon Lim

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Abstract

The temperature sensor includes a voltage generator and a temperature code generator. The voltage generator includes a first temperature element having a first resistance value and a second temperature element having a second resistance value and utilizes the first and second temperature elements to generate a temperature voltage signal having a voltage level that varies according to a variation in temperature. The voltage generator generates a reference voltage signal having a substantially constant voltage level regardless of the variation in temperature. The temperature code generator compares a voltage level of the temperature voltage signal with a voltage level of the reference voltage signal to generate a plurality of temperature code signals including information on the variation in temperature based on the comparison.

Claims9

Dependent claims

A temperature sensor comprising:

a drive voltage generator suitable for generating a drive voltage signal having a substantially constant voltage level regardless of the variation in temperature;
a reference voltage generator suitable for generating the reference voltage signal in response to the drive voltage signal;
a first driver comprising first and second temperature elements and suitable for generating a pre-temperature voltage signal in response to the drive voltage signal;
and
a second driver comprising third and fourth temperature elements and suitable for generating a temperature voltage signal from the pre-temperature voltage signal;
and
a temperature code generator suitable for comparing a voltage level of the temperature voltage signal with a voltage level of the reference voltage signal to generate a plurality of temperature code signals including information on the variation in temperature based on the comparison.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/601,680Filed 22 May 2017 · division
Priority: KR 10-2014-001006928 Jan 2014
Published: US 2017/0254707 A17 Sep 2017
Granted: 19 Nov 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification4 codes

G01K 7/16
Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using…: using…
G01K 7/015
Using semiconducting elements having PN junctions: using microstructures, e.g. made of silicon
G01K 7/21
In a specially-adapted circuit, e.g. bridge circuit: for modifying the output characteristic, e.g. linearising
G01K
Measuring temperature

Family

Application14/299,660Parent of this division · filed 9 Jun 2014
US 2017/0254707 A1Pre-grant publication · published 7 Sep 2017
US 9,689,750 B2Parent of this division
US 2015/0211939 A1Published application
US 10,481,015 B2This patent

From the US filing history. Foreign family members aren’t listed.

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