LTC2997: Remote/Internal Temperature Sensor Data Sheet9/13/2011181K
Features and Benefits
- Converts Remote Sensor or Internal Diode
- Temperature to Analog Voltage
- ±1°C Remote Temperature Accuracy
- ±1.5°C Internal Temperature Accuracy
- Built-In Series Resistance Cancellation
- 2.5V to 5.5V Supply Voltage
- 1.8V Reference Voltage Output
- 3.5ms VPTAT Update Time
- 4mV/°K Output Gain
- 170μA Quiescent Current
- Available in 6-Pin 2mm × 3mm DFN Package
The LTC2997 is a high-accuracy analog output 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.
The LTC2997 gives accurate results with low-cost diodeconnected NPN or PNP transistors or with integrated temperature transistors on microprocessors or FPGAs. Tying pin D+ to VCC configures the LTC2997 to measure its internal temperature.
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 VPTAT output.
The LTC2997 provides a precise and versatile micropower solution for accurate temperature sensing.
- Temperature Measurement
- Remote Temperature Measurement
- Environmental Monitoring
- System Thermal Control
- Desktop and Notebook Computers
- Network Servers
Markets and Technologies
Product Lifecycle Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (1)
DC1767A: Demo Board for the LTC2997 Remote/Internal Temperature Sensor.
Documentation & Resources
R544 Reliability Data3/26/2018151 K
DC1767A - Demo Manual8/5/2011323K
Power and Thermal Monitoring1/9/20171M
Making Accurate Temperature Measurements with Devices with Different Ideality Factors4/1/2017 LT Journal
Temperatursensor forbedrer performance og pålidelighed6/6/20161M
High Accuracy (±1°C) Temperature Sensors Improve System Performance and Reliability1/1/2013 LT Journal
Real Power Density: 26A μModule Regulator Keeps Cool in Tight Spaces10/1/2012 LT Journal
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