Temperature sensing device

A temperature sensing device comprising:

• a resistor string comprising a variable resistor, a first resistor, and a second resistor which are coupled in series with each other, wherein the resistor string is coupled between a sensing end and a reference ground voltage, and the first resistor and the second resistor are coupled to a monitoring end to provide a monitoring voltage;
• and
• a control circuitry which is coupled to the resistor string, receives the monitoring voltage, generates sensing temperature information by comparing the monitoring voltage with a plurality of reference voltages, and generates adjustment information according to the sensing temperature information,
• wherein the control circuitry adjusts a resistance provided by the variable resistor according to the adjustment information, the first resistor is a polysilicon resistor, and the second resistor is a silicon carbide diffusion resistor, wherein the variable resistor comprises:
• N third resistors, N being a positive integer;
• and
• N first fuses respectively coupled in parallel with the N third resistors to form a plurality of fuse-resistor pairs, wherein the fuse-resistor pairs are coupled in series with each other,
• wherein the control circuitry determines whether to blow at least one of the first fuses according to the adjustment information to adjust the resistance provided by the variable resistor.

A temperature sensing device comprising:

• a resistor string comprising a variable resistor, a first resistor, and a second resistor which are coupled in series with each other, wherein the resistor string is coupled between a sensing end and a reference ground voltage, and the first resistor and the second resistor are coupled to a monitoring end to provide a monitoring voltage;
• and
• a control circuitry which is coupled to the resistor string, receives the monitoring voltage, generates sensing temperature information by comparing the monitoring voltage with a plurality of reference voltages, and generates adjustment information according to the sensing temperature information,
• wherein the control circuitry adjusts a resistance provided by the variable resistor according to the adjustment information, the first resistor is a polysilicon resistor, and the second resistor is a silicon carbide diffusion resistor, wherein the control circuitry comprises:
• a plurality of comparators which respectively receive the reference voltages and commonly receive the monitoring voltage, wherein each of the comparators compares the monitoring voltage with the corresponding reference voltage to generate a comparison result;
• and
• a plurality of logic operators, wherein each of the logic operators performs a logic operation on two of the comparison results, and the logic operators respectively generate a plurality of bits of the sensing temperature information.