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Temperature Sensors | NCT210
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The NCT210 is a two-channel digital thermometer and over/undertemperature alarm, intended for use in personal computers and other systems requiring thermal monitoring and management. The device can measure the temperature of a microprocessor using a diode-connected PNP transistor, which can be provided on-chip with the processor, or can be a low cost discrete NPN/PNP device, such as the 2N3904/2N3906. A novel measurement technique cancels out the absolute value of the transistor's base emitter voltage so that no calibration is required. The second measurement channel measures the output of an on-chip temperature sensor to monitor the temperature of the device and its environment. The NCT210 commumicates over a two-wire serial interface compatible with SMBus standards. Under/overtemperature limits can be programmed into the device over the serial bus, and an /ALERT output signals when the on-chip or remote temperature is out of range. This output can be used as an interrupt or as an SMBus alert.
- Thermal Management
- Temperature Sensing
- Smart Electric Meters
- DSL Line Cards
- Alternative to the ADM1021A
- On-Chip and Remote Temperature Sensing
- No Calibration Necessary
- 1°C Accuracy for On-Chip Sensor
- 3°C Accuracy for the Remote Sensor
- Programmable Over/Undertemperature Limits
- Programmable Conversion rate
- 2-Wire SMBus Serial Interface
- Supports System Management Bus (SMBus) Alert
- 1 µA Standby Current
- 3.0 V to 5.5 V Supply
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NCT210RQR2G
Obsolete
Pb
A
H
P
QSOP-16
1
260
REEL
2500
N
Local & Remote
SMBus
0.37
3
5.5
-65
125
±3
Price N/A
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