Abstrait

Design of Ultra Low Power CMOS Temperature Sensor for Space Applications

Abhishek Pandey , Divya Yadav , Ritika Singh , Vijay Nath (Member IEEE)

In this paper we are introducing novel Ultra Low Power CMOS temperature sensors for space applications. Nowadays for each & every application new standard circuits are required. This proposed CMOS temperature sensor is able to measure the temperature range from -150oC [-238 oF] to 260oC [500 oF]. This low power CMOS temperature sensor is able to work in harsh environment. It is gainsay to design wide range, linear response from -150oC to 260oC temperature sensor for different space applications such as environment cooling systems, oil in hydraulic and lubricating system and fluid in coolant and heating systems. This circuit is designed in concept of SoC and operates with a single rail power supply of 1V. This circuit power consumption is 0.752μW [-238 oF] and 46.7 μW [500oF] . The sensitivity of this circuit is about 0.18 μW/ oC. This paper based on Proportional to Absolute Temperature (PTAT) and Negative Temperature Coefficient (NTC). This circuit is designed & simulated using Cadence Analog & Digital system design tools UMC 90nm technology.