Temperature-to-Voltage Converter Touts High Accuracy

July 22, 2011
The LTC2997 temperature-to-voltage converter integrates series resistance cancellation for 2.5V to 5.5V systems and measures a remote diode’s temperature with ±1°C accuracy or local temperature with ±1.5°C accuracy.

The LTC2997 temperature-to-voltage converter integrates series resistance cancellation for 2.5V to 5.5V systems and measures a remote diode’s temperature with ±1°C accuracy or local temperature with ±1.5°C accuracy. Output voltage is proportional to absolute temperature.  A 1.8V voltage reference output is also available to share with an external ADC or for generating temperature threshold voltages to compare against the VPTAT output. The device comes in commercial, industrial and automotive versions, supporting operating temperature ranges from 0°C to +70°C, -40°C to +85°C, and -40°C to +125°C, respectively.  Available in a six-pin, 2 mm x 3 mm DFN package, pricing starts at $1.45 each/1,000. LINEAR TECHNOLOGY CORP., Milpitas, CA. (800) 454-6327.

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