NCT1008CMT3R2G

The NCT1008CMT3R2G is a dual−channel digital thermometer and undertemperature/overtemperature alarm, intended for use in PCs and thermal management systems. It is register−compatible with the ADM1032 and ADT7461. A feature of the NCT1008CMT3R2G is series resistance cancellation, where up to 1.5 kΩ (typical) of resistance in series with the temperature monitoring diode can be automatically cancelled from the temperature result, allowing noise filtering. The NCT1008CMT3R2G has a configurable ALERT output and an extended, switchable temperature measurement range.
The NCT1008CMT3R2G can measure the temperature of a remote thermal diode accurate to ±1°C and the ambient temperature accurate to ±3°C. The temperature measurement range defaults to 0°C to +127°C, compatible with the ADM1032, but it can be switched to a wider measurement range of −64°C to +191°C.
The NCT1008CMT3R2G communicates over a 2−wire serial interface, compatible with system management bus (SMBus/I2C) standards. The default SMBus/I2C address of the NCT1008CMT3R2G is 0x4C. An NCT1008D is available with an SMBus/I2C address of 0x4D. This is useful if more than one NCT1008CMT3R2G is used on the same SMBus/I2C.
An ALERT output signals when the on−chip or remote temperature is out of range. The THERM output is a comparator output that allows on/off control of a cooling fan. The ALERT output can be reconfigured as a second THERM output, if required.

Applications
• Smart Phones
• Desktop and Notebook Computers
• Smart Batteries
• Automotive
• Embedded Systems

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