Temperature detection circuit

• Main Authors: XIONG ZHENGDONG, CHEN GUO'AN, ZHEN HUIRONG
• Format: Patent
• Language: Chinese; English
• Published: 10.07.2018
• Subjects: MEASURING; MEASURING QUANTITY OF HEAT; MEASURING TEMPERATURE; PHYSICS; TESTING; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR

The utility model discloses a temperature detection circuit, including PTAT current generation circuits, PTAT voltage generation circuit, adc ADC, selection module, control module and N way temperature sensor, N is more than or equal to 2's an integer, N way temperature sensor parallel connection sets up at the chip different zone, produces the magnitude of voltage of N and temperature relation, select the module to be arranged in selecting alternative way temperature sensor to be connected with PTAT current generation circuits from N way temperature sensor, PTAT current generation circuits produces the PTAT electric current, PTAT voltage generation circuit receives the PTAT electric current produces PTAT voltage, adc ADC receives PTAT voltage will PTAT voltage becomes data signal from analog signal transition, the action of module is selected in control module control. The utility model discloses a PTAT current generation circuits of N way temperature sensor sharing and PTAT voltage generation circuit have e