ADT7461AR ON Semiconductor, ADT7461AR Datasheet - Page 2

• Manufacturer Part Number: ADT7461AR
• Description: IC TEMP MONITOR +/-1C DUAL 8SOIC
• Manufacturer: ON Semiconductor

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)

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