ADT7461AR ON Semiconductor, ADT7461AR Datasheet - Page 2
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ADT7461AR
Manufacturer Part Number
ADT7461AR
Description
IC TEMP MONITOR +/-1C DUAL 8SOIC
Manufacturer
ON Semiconductor
Datasheet
1.ADT7461AR.pdf
(24 pages)
Specifications of ADT7461AR
Rohs Status
RoHS non-compliant
Function
Temp Monitoring System (Sensor)
Topology
ADC, Comparator, Multiplexer, Register Bank
Sensor Type
External & Internal
Sensing Temperature
0°C ~ 127°C, External Sensor
Output Type
SMBus™
Output Alarm
Yes
Output Fan
Yes
Voltage - Supply
3 V ~ 5.5 V
Operating Temperature
-40°C ~ 120°C
Mounting Type
Surface Mount
Package / Case
8-SOIC (3.9mm Width)
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ADT7461
TABLE OF CONTENTS
Specifications..................................................................................... 3
SMBus Timing Specifications ......................................................... 4
Absolute Maximum Ratings............................................................ 5
Pin Configuration and Function Descriptions............................. 6
Typical Performance Characteristics ............................................. 7
Functional Description .................................................................... 9
REVISION HISTORY
7/05—Rev. A to Rev. B
Changes to Features Section............................................................. 1
Changes to Applications Section ..................................................... 1
Changes to General Description Section ....................................... 1
Changes to Addressing the Device Section................................... 14
Updated Outline Dimensions ......................................................... 21
Changes to the Ordering Guide...................................................... 22
10/04—Rev. 0 to Rev. A
Change to SMBus Specifications .................................................... 4
Changes to Figure 6 and Figure 10................................................. 7
Added Figure 9 and Figure 13......................................................... 7
Changes to Temperature Measurement Section......................... 10
Changes to Figure 19 and Figure 25............................................. 16
Changes to Serial Bus Interface Section ...................................... 23
10/03—Revision 0: Initial Version
Thermal Characteristics .............................................................. 5
ESD Caution.................................................................................. 5
Series Resistance Cancellation.................................................... 9
Temperature Measurement Method .......................................... 9
Temperature Measurement Results.......................................... 10
Temperature Measurement Range ........................................... 10
Temperature Data Format ......................................................... 10
Rev. B | Page 2 of 24
Outline Dimensions ....................................................................... 21
ADT7461 Registers .................................................................... 11
Serial Bus Interface..................................................................... 14
Addressing the Device ............................................................... 14
ALERT Output............................................................................ 16
Low Power Standby Mode......................................................... 16
Sensor Fault Detection .............................................................. 16
The ADT7461 Interrupt System............................................... 16
Application Information ........................................................... 18
Thermal Inertia and Self-Heating............................................ 18
Layout Considerations............................................................... 19
Application Circuit..................................................................... 20
Ordering Guide .......................................................................... 22