参数资料
型号: ADT7461AARMZ-2RL7
厂商: ON SEMICONDUCTOR
元件分类: 温度/湿度传感器
英文描述: DIGITAL TEMP SENSOR-SERIAL, 8BIT(s), 2.5Cel, SQUARE, SURFACE MOUNT
封装: LEAD FREE MSOP-8
文件页数: 1/19页
文件大小: 276K
代理商: ADT7461AARMZ-2RL7
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 dualchannel digital thermometer and
undertemperature/overtemperature alarm, intended for use in PCs and
thermal management systems. It is pin and registercompatible 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 2wire serial interface,
compatible with system management bus (SMBus) standards. The
default SMBus address of the ADT7461A is 0x4C. An ADT7461A2 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 onchip 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
OnChip 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 RegisterCompatible with ADM1032 and ADT7461
2Wire SMBus Serial Interface with SMBus Alert Support
Programmable Over/Undertemperature Limits
Offset Registers for System Calibration
Up to Two Overtemperature FailSafe THERM Outputs
Small 8Lead MSOP
240 mA Operating Current, 5 mA Standby Current
These are PbFree Devices
Applications
Desktop and Notebook Computers
Industrial Controllers
Smart Batteries
Automotive
Embedded Systems
BurnIn 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
MSOP8
CASE 846AB
T1x = Refer to Order Info Table
A
= Assembly Location
Y
= Year
W
= Work Week
G
= PbFree Package
1
(Note: Microdot may be in either location)
1
8
T1x
AYWG
G
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