Abstract
An all-CMOS circuit for combined voltage reference and temperature sensor is proposed. For voltage reference design, a self-PTAT current is generated for compensating a diode-connected NMOS transistor for achieving temperature-independent purpose. In addition, an ultra linear temperature sensor can be realized and achieved simultaneously. The circuit topology is very suitable for SoC integration. The voltage reference provides a stable voltage for analog circuit. Moreover, the temperature sensor increases the system reliability by predicting eventual faults caused by excessive chip temperatures
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