NCT210: 2-Channel Digital Thermometer with Under/Overtemperature Alarm
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.
Features- 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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Applications- Thermal Management
- Temperature Sensing
| End Products- Smart Electric Meters
- DSL Line Cards
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Data Sheets (1)
Package Drawings (1)
| Document Title | Document ID/Size | Revision |
|---|
| QSOP-16 | 492-01 (58.5kB) | A |
Order Information
| Product | Status | Compliance | Package | MSL* | Container | Budgetary Price/Unit |
|---|
| NCT210RQR2G | Active | Pb-free
Halide free | QSOP-16 | 492-01 | 1 | Tape and Reel | 2500 | Contact BDTIC |
Specifications
| Product | Sensor Type | Data Transmission Standard | ICC Max (mA) | VCC Min (V) | VCC Max (V) | T Min (°C) | T Max (°C) | Temperature Error (°C) |
|---|
| NCT210RQR2G | Local & Remote | SMBus | 0.37 | 3 | 5.5 | -65 | 125 | ±3 |
