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Consider the temperature measurement circuit depicted in the figure, which uses ...

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Consider the temperature measurement circuit depicted in the figure, which uses a thermistor as the temperature sensor, i.e. the resistor with negative temperature coefficient (NTC). The temperature operating range is from 0 °C to 100 °C.

Thermistor circuit

Also, admit the sensor characteristic, which is shown in the next figure, being defined by a constant over the operating temperature range.

Thermistor RT charactetistic

The circuit is designed to minimimze the common-mode voltage at the amplifier inputs at midscale temperature. Consider and obtain the value of that uses the maximum analog-to-digital (ADC) dynamic range.

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