DC1767A

Remote/Internal Temperature Sensor Demonstration Circuit

demonstration board is designed to allow easy evaluation of the LTC2997 internal/remote temperature sensor. It converts the temperature of an external sensor or its own temperature to an analog voltage output. A built in algorithm eliminates errors due to series resistance between the LTC2997 and the sensor diode. It gives accurate results with low cost diode connected NPN or PNP transistors or with integrated temperature transistors on microprocessors or FPGAs. The LTC2997 provides an additional 1.8V reference voltage output which can be used as an ADC reference input or for generating temperature threshold voltages to compare against the buffered voltage proportional to absolute temperature. it also provides a precise and versatile micropower solution for accurate temperature sensing.

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Converts remote sensor or internal diode

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Temperature to analog voltage

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Built in series resistance cancellation

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±1°C remote temperature accuracy

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±1.5°C internal temperature accuracy