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US 12,590,848 B2Granted
Temperature sensor and electronic system for executing trimming operations
AssigneeSK hynix Inc.
InventorsHyun Mo Sung, Yoon Jae Shin
Life of this patent
Estimating the term…
Abstract
A temperature sensor includes a first trimming resistor having a first resistance value that is trimmed based on a first trimming code and configured to adjust a gate voltage, a MOS transistor turned on based on the gate voltage and configured to drive a variable voltage having a voltage level set for each sensing temperature, and a second trimming resistor connected to the MOS transistor, the second trimming resistor having a second resistance value that is trimmed based on a second trimming code.
Claims19
A temperature sensor comprising:
- a first trimming resistor having a first resistance value that is trimmed based on a first trimming code and configured to adjust a gate voltage;
- a MOS transistor turned on based on the gate voltage and configured to drive a variable voltage having a voltage level set for each sensing temperature;
- and
- a second trimming resistor connected to the MOS transistor, the second trimming resistor having a second resistance value that is trimmed based on a second trimming code,
- wherein the first trimming resistor is connected between a ground voltage and a node from which the gate voltage is output.
2 more elements
A temperature sensor comprising:
- a driving voltage regulator configured to drive a driving voltage to a high voltage based on a result of a comparison between a source reference voltage and a voltage generated by dividing the driving voltage;
- a variable voltage generation circuit comprising a MOS transistor that drives a variable voltage based on the driving voltage, the variable voltage generation circuit configured to:
- perform a first trimming operation of adjusting a resistance value of a first trimming resistor in order to adjust a voltage level of a gate voltage of the MOS transistor;
- and
- perform a second trimming operation of adjusting a resistance value of a second trimming resistor that is connected to the MOS transistor;
- and
- a temperature sensing signal generation circuit configured to generate a temperature sensing signal based on the variable voltage and a temperature reference voltage that is generated by dividing the driving voltage.
4 more elements
An electronic system comprising:
- an external device configured to generate and output a first trimming code and a second trimming code, a logic bit set of each being set based on whether fuses included in the external device have been cut;
- and
- a temperature sensor comprising a MOS transistor that drives a variable voltage based on a driving voltage, the temperature sensor configured to:
- perform a first trimming operation of adjusting a resistance value of a first trimming resistor based on the first trimming code in order to adjust a voltage level of a gate voltage of the MOS transistor,
- perform a second trimming operation of adjusting a resistance value of a second trimming resistor that is connected to the MOS transistor based on the second trimming code, and
- generate a temperature sensing signal based on the variable voltage and a temperature reference voltage, wherein the first trimming resistor is connected between a ground voltage and a node from which the gate voltage is output.
3 more elements
Dependencies are inferred from the claim text.