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ADT7468ARQZ-REEL7

Description
IC SPECIALTY ANALOG CIRCUIT, PDSO24, MO-137AE, QSOP-24, Analog IC:Other
CategoryThe signal circuit   
File Size1MB,84 Pages
ManufacturerADI
Websitehttps://www.analog.com
Environmental Compliance  
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ADT7468ARQZ-REEL7 Overview

IC SPECIALTY ANALOG CIRCUIT, PDSO24, MO-137AE, QSOP-24, Analog IC:Other

ADT7468ARQZ-REEL7 Parametric

Parameter NameAttribute value
Is it lead-free?Lead free
Is it Rohs certified?conform to
MakerADI
Parts packaging codeSSOP
package instructionMO-137AE, QSOP-24
Contacts24
Reach Compliance Codeunknown
ECCN codeEAR99
Analog Integrated Circuits - Other TypesANALOG CIRCUIT
JESD-30 codeR-PDSO-G24
JESD-609 codee3
length8.6614 mm
Humidity sensitivity level1
Number of functions1
Number of terminals24
Maximum operating temperature120 °C
Minimum operating temperature-40 °C
Package body materialPLASTIC/EPOXY
encapsulated codeSSOP
Encapsulate equivalent codeSSOP24,.24
Package shapeRECTANGULAR
Package formSMALL OUTLINE, SHRINK PITCH
Peak Reflow Temperature (Celsius)260
power supply3.3 V
Certification statusNot Qualified
Maximum seat height1.7526 mm
Maximum supply current (Isup)3 mA
Maximum supply voltage (Vsup)5.5 V
Minimum supply voltage (Vsup)3 V
Nominal supply voltage (Vsup)3.3 V
surface mountYES
Temperature levelINDUSTRIAL
Terminal surfaceMATTE TIN
Terminal formGULL WING
Terminal pitch0.635 mm
Terminal locationDUAL
Maximum time at peak reflow temperature40
width3.9116 mm
Base Number Matches1
dBCool
®
Remote Thermal
Controller and Voltage Monitor
ADT7468
FEATURES
Monitors up to 5 voltages
Controls and monitors up to 4 fans
High and low frequency fan drive signal
1 on-chip and 2 remote temperature sensors
Series resistance cancellation on the remote channel
Extended temperature measurement range, up to 191°C
Dynamic T
MIN
control mode intelligently optimizes system
acoustics
Automatic fan speed control mode manages system
cooling based on measured temperature
Enhanced acoustic mode dramatically reduces user
perception of changing fan speeds
Thermal protection feature via THERM output
Monitors performance impact of Intel® Pentium
®
4 processor
Thermal control circuit via THERM input
2-wire, 3-wire, and 4-wire fan speed measurement
Limit comparison of all monitored values
Meets SMBus 2.0 electrical specifications
(fully SMBus 1.1-compliant)
GENERAL DESCRIPTION
The ADT7468
dBCool
controller is a thermal monitor and
multiple PWM fan controller for noise sensitive or power
sensitive applications requiring active system cooling. The
ADT7468 can drive a fan using either a low or high frequency
drive signal, monitor the temperature of up to two remote
sensor diodes plus its own internal temperature, and measure
and control the speed of up to four fans, so that they operate at
the lowest possible speed for minimum acoustic noise.
The automatic fan speed control loop optimizes fan speed for a
given temperature. A unique, dynamic T
MIN
control mode
enables the system thermals/acoustics to be intelligently
managed. The effectiveness of the system’s thermal solution can
be monitored using the THERM input. The ADT7468 also
provides critical thermal protection to the system using the
bidirectional THERM pin as an output to prevent system or
component overheating.
FUNCTIONAL BLOCK DIAGRAM
SCL
VID5
VID4
VID3
VID2
VID1
VID0
PWM1
PWM2
PWM3
PWM REGISTERS
AND
CONTROLLERS
HF & LF
ACOUSTIC
ENHANCEMENT
CONTROL
AUTOMATIC
FAN SPEED
CONTROL
ADDRESS
POINTER
REGISTER
ACOUSTIC
ENHANCEMENT
CONTROL
SERIAL BUS
INTERFACE
SDA SMBALERT
TACH1
TACH2
TACH3
TACH4
PERFORMANCE
MONITORING
THERM
V
CC
TO ADT7468
THERMAL
PROTECTION
FAN SPEED
COUNTER
DYNAMIC
T
MIN
CONTROL
PWM
CONFIGURATION
REGISTERS
INTERRUPT
MASKING
INTERRUPT
STATUS
REGISTERS
V
CC
D1+
D1–
D2+
D2–
+5V
IN
+12V
IN
+2.5V
IN
V
CCP
ADT7468
10-BIT
ADC
INPUT
SIGNAL
CONDITIONING
AND
ANALOG
MULTIPLEXER
LIMIT
COMPARATORS
SRC
BAND GAP
REFERENCE
VALUE AND
LIMIT
REGISTERS
GND
Figure 1.
Rev. A
Information furnished by Analog Devices is believed to be accurate and reliable.
However, no responsibility is assumed by Analog Devices for its use, nor for any
infringements of patents or other rights of third parties that may result from its use.
Specifications subject to change without notice. No license is granted by implication
or otherwise under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
© 2005 Analog Devices, Inc. All rights reserved.
04499-0-001
BAND GAP
TEMP SENSOR

ADT7468ARQZ-REEL7 Related Products

ADT7468ARQZ-REEL7 ADT7468ARQZ ADT7468ARQZ-REEL
Description IC SPECIALTY ANALOG CIRCUIT, PDSO24, MO-137AE, QSOP-24, Analog IC:Other IC SPECIALTY ANALOG CIRCUIT, PDSO24, MO-137AE, QSOP-24, Analog IC:Other IC SPECIALTY ANALOG CIRCUIT, PDSO24, MO-137AE, QSOP-24, Analog IC:Other
Is it lead-free? Lead free Lead free Lead free
Is it Rohs certified? conform to conform to conform to
Maker ADI ADI ADI
Parts packaging code SSOP SSOP SSOP
package instruction MO-137AE, QSOP-24 MO-137AE, QSOP-24 MO-137AE, QSOP-24
Contacts 24 24 24
Reach Compliance Code unknown unknown unknown
ECCN code EAR99 EAR99 EAR99
Analog Integrated Circuits - Other Types ANALOG CIRCUIT ANALOG CIRCUIT ANALOG CIRCUIT
JESD-30 code R-PDSO-G24 R-PDSO-G24 R-PDSO-G24
JESD-609 code e3 e3 e3
length 8.6614 mm 8.6614 mm 8.6614 mm
Humidity sensitivity level 1 1 1
Number of functions 1 1 1
Number of terminals 24 24 24
Maximum operating temperature 120 °C 120 °C 120 °C
Minimum operating temperature -40 °C -40 °C -40 °C
Package body material PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code SSOP SSOP SSOP
Encapsulate equivalent code SSOP24,.24 SSOP24,.24 SSOP24,.24
Package shape RECTANGULAR RECTANGULAR RECTANGULAR
Package form SMALL OUTLINE, SHRINK PITCH SMALL OUTLINE, SHRINK PITCH SMALL OUTLINE, SHRINK PITCH
Peak Reflow Temperature (Celsius) 260 260 260
power supply 3.3 V 3.3 V 3.3 V
Certification status Not Qualified Not Qualified Not Qualified
Maximum seat height 1.7526 mm 1.7526 mm 1.7526 mm
Maximum supply current (Isup) 3 mA 3 mA 3 mA
Maximum supply voltage (Vsup) 5.5 V 5.5 V 5.5 V
Minimum supply voltage (Vsup) 3 V 3 V 3 V
Nominal supply voltage (Vsup) 3.3 V 3.3 V 3.3 V
surface mount YES YES YES
Temperature level INDUSTRIAL INDUSTRIAL INDUSTRIAL
Terminal surface MATTE TIN MATTE TIN MATTE TIN
Terminal form GULL WING GULL WING GULL WING
Terminal pitch 0.635 mm 0.635 mm 0.635 mm
Terminal location DUAL DUAL DUAL
Maximum time at peak reflow temperature 40 NOT SPECIFIED NOT SPECIFIED
width 3.9116 mm 3.9116 mm 3.9116 mm
Base Number Matches 1 1 1
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