CIRCUIT AND METHOD FOR DETECTING TEMPERATURE

摘要

PURPOSE: A temperature sensing circuit and a sensing method thereof are provided to reduce errors of a temperature measurement result by nonlinear characteristic and to enhance the accuracy and resolution of the measurement result. CONSTITUTION: A temperature sensing circuit comprises a first oscillator(301), a second oscillator(303), and a temperature information generating unit(307). The first oscillator generates a fist periodical signal. The second oscillator generates a second periodical signal. A frequency of the second periodical signal becomes higher as a temperature is increased. The temperature information generating unit generates temperature information by using a difference between the frequencies of first and second periodical signals.