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ON Semiconductor - Temperature Monitor

Numéro de référence NCT214
Description Temperature Monitor
Fabricant ON Semiconductor 
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NCT214 fiche technique
NCT214
+15C Temperature Monitor
with Series Resistance
Cancellation
The NCT214 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 NCT214 is series resistance
cancellation, where up to 1.5 kW (typical) of resistance in series with the
temperature monitoring diode can be automatically cancelled from the
temperature result, allowing noise filtering. The NCT214 has a
configurable ALERT output and an extended, switchable temperature
measurement range.
The NCT214 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 NCT214 communicates over a 2-wire serial interface,
compatible with system management bus (SMBus/I2C) standards. The
NCT214 has two address pins which allow up to 9 NCT214s to be used
on the same bus.
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
Series Resistance Cancellation Up to 1.5 kW
Extended, Switchable Temperature Measurement Range
0°C to +127°C (Default) or –64°C to +191°C
Register-compatible with ADM1032 and ADT7461
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
240 mA Operating Current, 5 mA Standby Current
This Device is Pb-Free, Halogen Free and is RoHS Compliant
Applications
Desktop and Notebook Computers
Industrial Controllers
Smart Batteries
Automotive
Embedded Systems
http://onsemi.com
WDFN10
CASE 522AA
PIN ASSIGNMENT
ADD1
VDD
D+
D−
THERM
1
(Top View)
ADD0
SCLK
SDATA
ALERT/THERM2
GND
MARKING DIAGRAM
NCT
214
ALYWG
G
NCT214 = Specific Device Code
A = Assembly Location
L = Wafer Lot
Y = Year
W = Work Week
G = Pb-Free Package
(Note: Microdot may be in either location)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 18 of this data sheet.
© Semiconductor Components Industries, LLC, 2014
April, 2014 − Rev. 4
1
Publication Order Number:
NCT214/D

PagesPages 19
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