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LTC2997: Remote/Internal Temperature Sensor Data Sheet9/13/2011PDF181K
Overview
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
Product Details
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.
Applications
- Temperature Measurement
- Remote Temperature Measurement
- Environmental Monitoring
- System Thermal Control
- Desktop and Notebook Computers
- Network Servers
Product Categories
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)
Documentation & Resources
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Tools & Simulations
LTspice
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Step 2: Click on the link in the section below to download a demonstration circuit.
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Models for the following parts are available in LTspice:
LTC2997
Design Resources
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.
Sample & Buy
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Sampling
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Evaluation Boards
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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.