Temperature sensor circuit capable of compensating for nonlinear components and compensation method for temperature sensor circuit

A compensation method for a temperature sensor circuit, the compensation method comprising:

• generating, by a first temperature sensor module circuit to which a first reference current level pair has been applied, a first temperature voltage signal having a positive correlation with temperature;
• generating, by a second temperature sensor module circuit to which a second reference current level pair different from the first reference current level pair has been applied, a second temperature voltage signal having a positive correlation with the temperature;
• and
• generating an output signal of an arithmetic operation circuit as a voltage signal proportional to the temperature using the first temperature voltage signal and the second temperature voltage signal, from which components nonlinearly influenced by the temperature have been eliminated, by performing an arithmetic operation on the first temperature voltage signal and the second temperature voltage signal.

A temperature sensor circuit, comprising:

• a first temperature sensor module circuit configured to:
• include a first transistor configured such that a first reference current is applied thereto via an emitter terminal thereof and a second transistor configured such that a second reference current is applied thereto via an emitter terminal thereof;
• and
• generate a first temperature voltage signal using a difference between a first base-emitter voltage of the first transistor and a second base-emitter voltage of the second transistor;
• a second temperature sensor module circuit configured to:
• include a third transistor configured such that a third reference current is applied thereto via an emitter terminal thereof and a fourth transistor configured such that a fourth reference current is applied thereto via an emitter terminal thereof;
• and
• generate a second temperature voltage signal using a difference between a third base-emitter voltage of the third transistor and a fourth base-emitter voltage of the fourth transistor;
• and
• an arithmetic operation circuit configured to generate an output signal as a voltage signal proportional to temperature based on the first temperature voltage signal and the second temperature voltage signal.