Multiplexer circuit for a dual thermistor operation using a single line coupling

摘要

A time-multiplexed thermal measuring circuit for controlling and measuring operation of two thermistors via an electrical single-line coupling is provided. The circuit may have a first diode that selectively couples or isolates a first thermistor based on the polarity of a voltage applied to the measurement node with a measurement node. The circuit may further include a second diode that selectively couples or isolates a second thermistor based on the polarity of the voltage applied to the measurement node with the measurement node so that only one of the thermistors is coupled to the measurement node at any time.