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NCT1008DMN3R2G Datasheet(PDF) 1 Page - ON Semiconductor |
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NCT1008DMN3R2G Datasheet(HTML) 1 Page - ON Semiconductor |
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1 / 20 page  Semiconductor Components Industries, LLC, 2012 July, 2012 − Rev. 6 1 Publication Order Number: NCT1008/D NCT1008 +15C Temperature Monitor with Series Resistance Cancellation The NCT1008 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 NCT1008 is series resistance cancellation, where up to 1.5 k W (typical) of resistance in series with the temperature monitoring diode can be automatically cancelled from the temperature result, allowing noise filtering. The NCT1008 has a configurable ALERT output and an extended, switchable temperature measurement range. The NCT1008 can measure the temperature of a remote thermal diode accurate to 1C and the ambient temperature accurate to 3C. The temperature measurement range defaults to 0C to +127C, compatible with the ADM1032, but it can be switched to a wider measurement range of −64C to +191C. The NCT1008 communicates over a 2-wire serial interface, compatible with system management bus (SMBus/I2C) standards. The default SMBus/I2C address of the NCT1008 is 0x4C. An NCT1008D is available with an SMBus/I2C address of 0x4D. This is useful if more than one NCT1008 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. Features On-chip and Remote Temperature Sensor 0.25C Resolution/1C Accuracy on Remote Channel 1C Resolution/1C Accuracy on Local Channel Series Resistance Cancellation Up to 1.5 kW Extended, Switchable Temperature Measurement Range 0C to +127C (Default) or –64C to +191C Register-compatible with ADM1032 and ADT7461 Remote THERM Limit of 108C 2-wire SMBus/I2C Serial Interface with SMBus Alert Support Programmable Over/Undertemperature Limits Offset Registers for System Calibration Up to Two Overtemperature Fail-safe THERM Outputs Small 8-lead DFN 240 mA Operating Current, 5 mA Standby Current Compatible with 1.8 V Logic Pb-Free Packages are Available Applications Smart Phones Desktop and Notebook Computers Smart Batteries Automotive Embedded Systems MARKING DIAGRAMS http://onsemi.com PIN ASSIGNMENT DFN8 CASE 506BJ See detailed ordering and shipping information in the package dimensions section on page 18 of this data sheet. ORDERING INFORMATION NCT 1008x ALYWG G 1 8 x = C or D A = Assembly Location L = Wafer Lot Y = Year W = Work Week G = Pb-Free Package (Note: Microdot may be in either location) WDFN8 CASE 511AT 8xMG G 1 VDD ALERT/ THERM2 (Top View) D+ D− THERM SCLK SDATA GND 1 2 3 4 8 7 6 5 8x = Device Code (Where x = C or D) M = Date Code G = Pb-Free Package WDFN8 DFN8 |
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