ADT7461AR-REEL7 ON Semiconductor, ADT7461AR-REEL7 Datasheet - Page 21

• Manufacturer Part Number: ADT7461AR-REEL7
• Description: IC SENSOR TEMP 2-CH 8SOIC
• Manufacturer: ON Semiconductor

Specifications of ADT7461AR-REEL7

• 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)

APPLICATION CIRCUIT
Figure 25 shows a typical application circuit for the ADT7461
using a discrete sensor transistor connected via a shielded,
twisted pair cable. The pull-ups on SCLK, SDATA, and ALERT
are required only if they are not already provided elsewhere in
the system.
CPU THERMAL
2N3906
DIODE
OR
SHIELD
Rev. 3 | Page 21 of 23 | www.onsemi.com
Figure 25. Typical Application Circuit
D+
D–
ADT7461
GND
THERM2
ALERT/
THERM
SDATA
SCLK
V
DD
ENABLE
The SCLK and SDATA pins of the ADT7461 can be interfaced
directly to the SMBus of an I/O controller, such as the Intel® 820
chipset.
FAN
0.1μF
V
DD
TYP 10kΩ
CONTROL
CIRCUIT
FAN
TYP 10kΩ
5V OR 12V
CONTROLLER
SMBUS
3V TO 3.6V
ADT7461