NCT1008: ±1°C Digital Temperature Sensor with Series Resistance Cancellation

Overview
Specifications
Packages
Applications
Datasheet: ±1 °C Temperature Sensor with Series Resistance Cancellation
Rev. 6 (327.0kB)
»View Material Composition
»Product Change Notification (2)
Product Overview
Product Description
The NCT1008 is a dual-channel digital temperature sensor intended for use in elevated thermal density applications. A feature of the NCT1008 is series resistance cancellation, where up to 1.5 kΩ 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 ±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 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
  • 0.25°C resolution/1°C accuracy on remote channel
  • 1°C resolution/1°C accuracy on local channel
  • Automatically cancels up to 1.5 kΩ (typical) of resistance in series with remote diode to allow noise filtering
  • Extended, switchable temperature measurement range 0°C to +127°C (default) or 64°C to +191°C
  • 2-wire SMBus serial interface with SMBus alert support
  • Programmable over/under temperature limits
  • Offset registers for system calibration
  • Up to two overtemperature fail-safe THERM outputs
  • Remote THERM Limit of 108°C
  • Compatible with 1.8 V Logic
Applications   End Products
  • Thermal Management
 
  • Notebook and Desktop Computers
  • Game Consoles
  • Servers
  • LCD TVs
  • Smart Electric Meters
  • Occupancy Sensors
  • DSL Line Cards
  • Graphics Cards
Technical Documentation & Design Resources
Application Notes (1) Package Drawings (2)
Data Sheets (1)  
Availability and Samples
Product
Status
Compliance
Description
Package
MSL*
Container
Budgetary Price/Unit
Type
Case Outline
Type
Qty.
NCT1008CMN3R2G Lifetime
Pb-free
Halide free
±1°C Digital Temperature Sensor with Series Resistance Cancellation DFN-8 506BJ 1 Tape and Reel 3000 $0.6
NCT1008CMT3R2G Active
Pb-free
Halide free
±1°C Digital Temperature Sensor with Series Resistance Cancellation WDFN-8 511AT 1 Tape and Reel 3000 $0.6
NCT1008DMN3R2G Lifetime
Pb-free
Halide free
±1°C Digital Temperature Sensor with Series Resistance Cancellation DFN-8 506BJ 1 Tape and Reel 3000 $0.6
NCT1008DMT3R2G Active
Pb-free
Halide free
±1°C Digital Temperature Sensor with Series Resistance Cancellation WDFN-8 511AT 1 Tape and Reel 3000 $0.6
Moisture Sensitivity level (MSL) for surface mount devices (lead free measured at 260°C reflow, non lead free at 235°C reflow)
Market Leadtime (weeks) :
Market Leadtime (weeks) :
Chip1Stop   (2014-07-25 00:00) : >1K
P&S   (2014-07-25 00:00) : >1K
Market Leadtime (weeks) :
ON Semiconductor   (2014-07-23 00:00) : 27,000
Market Leadtime (weeks) :
ON Semiconductor   (2014-07-23 00:00) : 27,000
Datasheet: ±1 °C Temperature Sensor with Series Resistance Cancellation
Rev. 6 (327.0kB)
»View Material Composition
»Product Change Notification (2)
Product Overview

Product Compliance Status Description Sensor Type Data Transmission Standard ICC Max (mA) VCC Min (V) VCC Max (V) T Min (°C) T Max (°C) Temperature Error (°C) Package Type
 Pb-free 
 Halide free 
 Active     ±1°C Digital Temperature Sensor with Series Resistance Cancellation   Local & Remote   I2C   0.35   2.8   3.6   -40   125   ±1   WDFN-8 
 Pb-free 
 Halide free 
 Active     ±1°C Digital Temperature Sensor with Series Resistance Cancellation   Local & Remote   I2C   0.35   2.8   3.6   -40   125   ±1   WDFN-8 
Previously Viewed Products
Clear List