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LTC2996 - Temperature Sensor with Alert Outputs

The LTC®2996 is a high accuracy temperature sensor with adjustable overtemperature and undertemperature thresholds and open drain alert outputs. It converts the temperature of an external diode sensor or its own die temperature to an analog output voltage while rejecting errors due to noise and series resistance. The measured temperature is compared against upper and lower limits set with resistive dividers. If a threshold is exceeded, the device communicates an alert by pulling low the correspondent open drain logic output.

The LTC2996 gives ±1°C accurate temperature results using commonly available NPN or PNP transistors or temperature diodes built into modern digital devices. A 1.8V reference output simplifies threshold programming and can be used as an ADC reference input.

The LTC2996 provides an accurate, low power solution for temperature monitoring in a compact 3mm × 3mm DFN package.

Features Converts Remote or Internal Diode Temperature to Analog Voltage Adjustable Overtemperature and Undertemperature Thresholds Voltage Output Proportional to Temperature ±1°C Remote Temperature Accuracy ±2°C Internal Temperature Accuracy Built-In Series Resistance Cancellation Open Drain Alert Outputs 2.25V to 5.5V Supply Voltage 1.8V Reference Voltage Output 200μA Quiescent Current 10-Lead 3mm × 3mm DFN Package Typical Application

Applications Temperature Monitoring and Measurement System Thermal Control Network Servers Desktop and Notebook Computers Environmental Monitoring Packaging