A Linear Temperature/Voltage Converter Using Thermistor in Logarithmic Network

Abstract

A novel linearization technique comprising thermistor-resistor-log network is shown which exhibits a linear analog temperature/voltage relation over a wide temperature range (-25°C to +110°C) with reasonably good response linearity, reliability, and overall improved performance. A notable feature of the proposed network is that the power dissipation in the thermistor is quite low and it decreases with increasing temperature thus avoiding a self-heating problem in the thermistor.