Analog Devices ADM1040 Datasheet
PRELIMINARY TECHNICAL DA T A
=
Preliminary Technical Data
FEATURES
Monitors Multiple Voltage Rails (240VA Lim-
ited)
Monitors Bulk DC, Op-Amp Supply, 5V Supply
Monitors Voltage Rails 1,2 and 3 Currents
Up to 3 Fan Speed Measurement Channels
Up to 6 General-Purpose Logic Inputs
External Temperature Measurement with Remote
Diode (Two Channels)
On-Chip Temperature Sensor
Limit Comparison of all Monitored Values
FUNCTIONAL BLOCK DIAGRAM
GPI0
4
GPIO
REGISTERS
Power Supply Monitor ASIC
ADM1040
Analog Fan Speed Control Output
SMBus
SMBus ALERT Capability
512 Bytes On-Chip, Write-Protected E
Shutdown Output for Overtemperature and
240VA Faults
APPLICATIONS
Network Servers and Personal Computers
Microprocessor-Based Office Equipment
Test Equipment and Measuring Instruments
TM
SCLSDA
2
3
SERIAL
BUS
INTERFACE
Compatible Serial Interface
A0/NTEST_OUT
A1
22
23
FROM NAND
TREEOUTPUT
2
PROM
I1_+
AIN3
AIN4
AIN5
5
7
9
10
11
12
13
14
15
16
17
18
19
20
21
V
DD
BANDGAP
SENSOR
TEMP.
FAN
SPEED
COUNTER
INPUT
SIGNAL
CONDITIONING
AND
ANALOG
MULTIPLEXER
TEMPERATURE
CONFIGURATION
ADM1040
BANDGAP
REFERENCE
6
GND
FAN1/GP I1
VDD/5VSB
GPI2/I2_+
GPI3/I2_-/AIN2
GPI4/I3_+
GPI5/I3_D1-/GPI2
D1+/GPI3
D2-/GPI4/FAN2
D2+/GPI5/FAN3
I1_-/AIN1
REV. PrG 01/'01
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
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
VALUE AND
LIMIT
REGISTERS
ADDRESS
POINTER
REGISTER
8K BYTES
E2PROM
REGISTER
8-BIT
ADC
LIMIT
COMPARATORS
INTERRUPT
STATUS
REGISTERS
INT MASK
REGISTERS
INTERRUPT
MASKING
CONFIGURATION
REGISTERS
ANALOG
OUTPUT REGISTER
AND 8-BIT DAC
TO NAND
TREE
ENABLE
1
ALERT
24 SHDN
8
DAC/NTEST_IN
SMBus is a trademark
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617/329-4700 World Wide Web Site: http://www.analog.com
Fax: 617/326-8703 © Analog Devices, Inc., 2001
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