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ADT7461AARMZ-R 数据表(PDF) 1 Page - ON Semiconductor

部件名 ADT7461AARMZ-R
功能描述  짹1??Temperature Monitor with Series Resistance Cancellation
Download  19 Pages
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制造商  ONSEMI [ON Semiconductor]
网页  http://www.onsemi.com
标志 ONSEMI - ON Semiconductor

ADT7461AARMZ-R 数据表(HTML) 1 Page - ON Semiconductor

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© Semiconductor Components Industries, LLC, 2009
December, 2009 − Rev. 6
1
Publication Order Number:
ADT7461A/D
ADT7461A
+15C Temperature Monitor
with Series Resistance
Cancellation
The ADT7461A is a dual−channel digital thermometer and
undertemperature/overtemperature alarm, intended for use in PCs and
thermal management systems. It is pin− and register−compatible with the
ADM1032 and ADT7461. A feature of the ADT7461A 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
ADT7461A has a configurable ALERT output and an extended,
switchable temperature measurement range.
The ADT7461A 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 ADT7461A communicates over a 2−wire serial interface,
compatible with system management bus (SMBus) standards. The
default SMBus address of the ADT7461A is 0x4C. An ADT7461A−2 is
available with an SMBus address of 0x4D. This is useful if more than one
ADT7461A is used on the same SMBus.
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 kW (Typ) 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
Pin− and Register−Compatible with ADM1032 and ADT7461
2−Wire SMBus 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 MSOP
240 mA Operating Current, 5 mA Standby Current
These are Pb−Free Devices
Applications
Desktop and Notebook Computers
Industrial Controllers
Smart Batteries
Automotive
Embedded Systems
Burn−In Applications
Instrumentation
MARKING DIAGRAM
http://onsemi.com
PIN ASSIGNMENT
VDD
D+
D–
GND
ALERT/THERM2
THERM
1
2
3
4
8
7
6
5
(Top View)
SCLK
SDATA
See detailed ordering and shipping information in the package
dimensions section on page 18 of this data sheet.
ORDERING INFORMATION
MSOP−8
CASE 846AB
T1x = Refer to Order Info Table
A
= Assembly Location
Y
= Year
W
= Work Week
G
= Pb−Free Package
1
(Note: Microdot may be in either location)
1
8
T1x
AYWG
G


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