ADT7461AR-REEL7 ON Semiconductor, ADT7461AR-REEL7 Datasheet - Page 21
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ADT7461AR-REEL7
Manufacturer Part Number
ADT7461AR-REEL7
Description
IC SENSOR TEMP 2-CH 8SOIC
Manufacturer
ON Semiconductor
Datasheet
1.ADT7461AR-REEL7.pdf
(23 pages)
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