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ADM1026JST View Datasheet(PDF) - ON Semiconductor

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ADM1026JST Datasheet PDF : 55 Pages
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ADM1026
Complete Thermal System
Management Controller
The ADM1026 is a complete system hardware monitor for
microprocessorbased systems, providing measurement and limit
comparison of various system parameters. The ADM1026 has up to 19
analog measurement channels. Fifteen analog voltage inputs are
provided, five of which are dedicated to monitoring +3.3 V, +5.0 V,
and ±12 V power supplies, and the processor core voltage. The
ADM1026 can monitor two other power supply voltages by
measuring its own VCC and the main system supply. One input (two
pins) is dedicated to a remote temperaturesensing diode. Two
additional pins can be configured as generalpurpose analog inputs to
measure 0 V to 2.5 V, or as a second temperature sensing input. The
eight remaining inputs are generalpurpose analog inputs with a range
of 0 V to 2.5 V or 0 V to 3.0 V. The ADM1026 also has an onchip
temperature sensor.
The ADM1026 has eight pins that can be configured for fan speed
measurement or as generalpurpose logic I/O pins. Another eight pins are
dedicated to generalpurpose logic I/O. An additional pin can be
configured as a generalpurpose I/O or as the bidirectional THERM pin.
Measured values can be read out via a 2wire serial system
management bus, and values for limit comparisons can be
programmed over the same serial bus. The high speed, successive
approximation ADC allows frequent sampling of all analog channels
to ensure a fast interrupt response to any outoflimit measurement.
FEATURES
Up to 19 Analog Measurement Channels
(Including Internal Measurements)
Up to 8 Fan Speed Measurement Channels
Up to 17 GeneralPurpose Logic I/O Pins
Remote Temperature Measurement with Remote Diode (Two Channels)
OnChip Temperature Sensor
Analog and PWM Fan Speed Control Outputs
2Wire Serial System Management Bus (SMBus)
8 kB OnChip EEPROM
Full SMBus 1.1 Support Includes Packet Error Checking (PEC)
Chassis Intrusion Detection
Interrupt Output (SMBAlert)
Reset Input, Reset Outputs
Thermal Interrupt (THERM) Output
Limit Comparison of All Monitored Values
PbFree Packages are Available
APPLICATIONS
Network Servers and Personal Computers
Telecommunications Equipment
Test Equipment and Measuring Instruments
http://onsemi.com
LQFP48
CASE 932
MARKING DIAGRAM
ADM1026
JSTx
#YYWW
1
x
= Refer to list of PNs in
Ordering Info Table
#
= PbFree Package
YYWW = Date Code
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 54 of this data sheet.
© Semiconductor Components Industries, LLC, 2010
1
June, 2010 Rev. 3
Publication Order Number:
ADM1026/D
 

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