The LTC®2997 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 diode connected 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.
Features:
±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
| Manufacturer | Analog Devices Inc. |
|---|---|
| Category | Sensor Solutions |
| Sub-Category | Temperature Sensing |
| Eval Board Part Number | DC1767A-ND |
| Eval Board Supplier | Analog Devices Inc. |
| Eval Board |
Normally In Stock
|
| Purpose |
Remote/Internal Temp Sensor
|
| Sensing Method |
Diode, Internal/External
|
| Accuracy |
±1°C Remote, ±1.5°C Internal
|
| Sensing Range |
-40°C ~ 125°C
-40°C ~ 85°C (Local) |
| Features |
Voltage Reference
|
| Design Author |
Linear Technology
|
| Main I.C. Base Part |
LTC2997
|
| Component Count + Extras |
5 + 11
|
| Date Created By Author | 2011-01 |
| Date Added To Library | 2012-06 |
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