Temp Sensor Analog 3-Pin TO-92 Bag
Microchip Technology Inc
TEMP TO VOLTAGE CONVERTER
TO-92 LINEAR ACTIVE THERMISTER (TM) IC (10MV/OC)
Integrated circuits from leading manufacturers. Please read our extensive documentation which is free to download.
MCP9700 Series Low-Power Linear Active Thermistor - TO-92-3
Traditional NTC or PTC thermistors are relatively stupid components - they are but a resistor who changes its value as the temperature of the substrate is modified by the environment. Should you still be working with an analog signal acquisition system, giving the MCP9700 a chance might be a good idea.
The innovation in Microchip's approach is that the MCP9700 is not a simple slab of thermo-sensitive material. Instead, the American semiconductor powerhouse embeds a relatively complex set of logic along with the actual semiconductor sensing element.
This way, developers and users do not need to worry much about keeping accuracy high. The datasheet promises an average accuracy of but two degrees over an extremely wide temperature range; this makes the MCP9700 a high accuracy analog temperature sensor ideally suited to applications where an ADC is available.
One example for this would be an MCP9700 Arduino camera sensor - the Arduino already has an ADC, so measuring the voltage provided by the MCP9700 sensor is not a significant cost burden. Do, however, also keep digital sensors at the back of your head - TCO, after all, is and remains a factor...