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ADT7481 Arkusz danych(PDF) 1 Page - ON Semiconductor

Numer części ADT7481
Szczegółowy opis  Dual Channel Temperature Sensor and Overtemperature Alarm
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Producent  ONSEMI [ON Semiconductor]
Strona internetowa  http://www.onsemi.com
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ADT7481 Arkusz danych(HTML) 1 Page - ON Semiconductor

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© Semiconductor Components Industries, LLC, 2014
September, 2014 − Rev. 8
1
Publication Order Number:
ADT7481/D
ADT7481
Dual Channel Temperature
Sensor and Overtemperature
Alarm
The ADT7481 is a 3-channel digital thermometer and under/ over
temperature alarm, intended for use in PCs and thermal management
systems. It can measure its own ambient temperature or the
temperature of two remote thermal diodes. These thermal diodes can
be located in a CPU or GPU, or they can be discrete diode connected
transistors. The ambient temperature, or the temperature of the remote
thermal diode, can be accurately measured to
±1°C. The temperature
measurement range defaults to 0
°C to +127°C, compatible with
ADM1032, but can be switched to a wider measurement range from
−64
°C to +191°C.
The ADT7481 communicates over a 2-wire serial interface
compatible with System Management Bus (SMBus) standards. The
SMBus address of the ADT7481 is 0x4C. An ADT7481−1 with an
SMBus address of 0x4B is also available.
An ALERT output signals when the on-chip or remote temperature
is outside the programmed limits. The THERM output is a comparator
output that allows, for example, on/off control of a cooling fan. The
ALERT output can be reconfigured as a second THERM output if
required.
Features
1 Local and 2 Remote Temperature Sensors
0.25°C Resolution/1°C Accuracy on Remote Channels
1°C Resolution/1°C Accuracy on Local Channel
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/Undertemperature Limits
Offset Registers for System Calibration
Up to 2 Overtemperature Fail-Safe THERM Outputs
Small 10-lead MSOP Package
240 mA Operating Current, 5 mA Standby Current
These Devices are Pb-Free, Halogen Free and are RoHS Compliant
Applications
Desktop and Notebook Computers
Industrial Controllers
Smart Batteries
Automotive
Embedded Systems
Burn-In Applications
Instrumentation
MARKING DIAGRAM
http://onsemi.com
See detailed ordering and shipping information in the package
dimensions section on page 19 of this data sheet.
ORDERING INFORMATION
MSOP−10
CASE 846AC
PIN ASSIGNMENT
T0x
AYW
G
G
1
10
T0x = Refer to Ordering Info Table
A
= Assembly Location
Y
= Year
W
= Work Week
G
= Pb-Free Package
(Note: Microdot may be in either location)
ALERT/THERM2
SCLK
SDATA
D2+
D2−
VDD
D1+
D1−
THERM
GND
10
9
8
7
6
5
4
3
2
1
ADT7481


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