A New Time-Mode On-Chip Oscillator-Based High Linearity and Low Power Temperature Sensor

作者：Zhu Di^*; Siek Liter

来源：Journal of Circuits, Systems, and Computers, 2015, 24(10): 1550155.

DOI：10.1142/S0218126615501558

• Temperature sensor
• time-mode
• high linearity
• low power

This paper presents an energy-efficient and high linearity temperature sensor based on the architecture of a simple on-chip oscillator. A self-calibrated block is proposed to compensate the non-linearities of the on-chip oscillator due to PVT variations. In this manner, this on-chip oscillator-based temperature sensor has superior performance over the conventional inverterchain-based types. In order to generalize the application, no highly linear temperature coefficient resistors are being utilized. The entire circuit is simple and easy to be scaled down. According to the verifications in 65 nm CMOS process, with one-point calibration, this temperature sensor can achieve an inaccuracy within +/- 1 degrees C in the temperature range from -55 degrees C to 125 degrees C, with a power consumption of only 0.6 mu A under 1.2V supply voltages.

• 出版日期2015-12
• 单位南阳理工学院