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ADM1024 반도체 회로 부품 판매점

System Hardware Monitor with Remote Diode Thermal Sensing



Analog Devices 로고
Analog Devices
ADM1024 데이터시트, 핀배열, 회로
a
System Hardware Monitor with
Remote Diode Thermal Sensing
ADM1024
FEATURES
Up to Nine Measurement Channels
Inputs Programmable-to-Measure Analog Voltage, Fan
Speed or External Temperature
External Temperature Measurement with Remote
Diode (Two Channels)
On-Chip Temperature Sensor
Five Digital Inputs for VID Bits
LDCM Support
System Management Bus (SMBus)
Chassis Intrusion Detect
Interrupt and Over Temperature Outputs
Programmable RESET Input Pin
Shutdown Mode to Minimize Power Consumption
Limit Comparison of all Monitored Values
APPLICATIONS
Network Servers and Personal Computers
Microprocessor-Based Office Equipment
Test Equipment and Measuring Instruments
PRODUCT DESCRIPTION
The ADM1024 is a complete system hardware monitor for
microprocessor-based systems, providing measurement and limit
comparison of various system parameters. Eight measurement
inputs are provided, of which three are dedicated to monitoring
5 V and 12 V power supplies and the processor core voltage.
The ADM1024 can monitor a fourth power-supply voltage by
measuring its own VCC. One input (two pins) is dedicated to a
remote temperature-sensing diode. Two further pins can be
(continued on page 7)
FUNCTIONAL BLOCK DIAGRAM
VID0/IRQ0
VID1/IRQ1
VID2/IRQ2
VID3/IRQ3
VID4/IRQ4
FAN1/AIN1
FAN2/AIN2
+VCCP1
+2.5VIN / D2+
+5VIN
+12VIN
VCCP2 / D2 –
D1+
D1–
VCC
VCC
VID0–3 AND
FAN DIVISOR
REGISTER
100k
PULLUPS
VID4 AND
DEVICE ID
REGISTER
FAN SPEED
COUNTER
ADM1024
ADDRESS
POINTER
REGISTER
INPUT
ATTENUATORS
AND
ANALOG
MULTIPLEXER
TEMPERATURE
CONFIGURATION
REGISTER
POWER TO CHIP
BANDGAP
TEMPERATURE
SENSOR
10-BIT ADC
2.5V
BANDGAP
REFERENCE
SERIAL BUS
INTERFACE
CHANNEL
MODE
REGISTER
VALUE AND
LIMIT
REGISTERS
LIMIT
COMPARATORS
INTERRUPT
STATUS
REGISTERS
INT MASK
REGISTERS
INTERRUPT
MASKING
CONFIGURATION
REGISTERS
ANALOG
OUTPUT
REGISTER AND
8-BIT DAC
CHASSIS
INTRUSION
CLEAR
REGISTER
NTEST OUT/ADD
SDA
SCL
VCC
100k
VCC
100k
CI
THERM
INT
VCC
100k
NTEST IN/AOUT
RESET
GND
REV. 0
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.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700 World Wide Web Site: http://www.analog.com
Fax: 781/326-8703
© Analog Devices, Inc., 2000


ADM1024 데이터시트, 핀배열, 회로
ADM1024–SPECIFICATIONS1, 2
(TA = TMIN to TMAX, VCC = VMIN to VMAX, unless otherwise noted)
Parameter
Min Typ Max Unit Test Conditions/Comments
POWER SUPPLY
Supply Voltage, VCC
Supply Current, ICC
2.8 3.30 5.5 V
1.4 2.6 mA Interface Inactive, ADC Active
1.0 mA ADC Inactive, DAC Active
45 145 µA
Shutdown Mode
TEMPERATURE-TO-DIGITAL CONVERTER
Internal Sensor Accuracy
± 3 °C
± 2 °C
Resolution
± 1 °C
External Diode Sensor Accuracy
± 5 °C
± 3 °C
Resolution
± 1 °C
Remote Sensor Source Current
80 110 150 µA
4 6.5 9 µA
0°C TA 100°C
TA = 25°C
0°C TA 100°C
25°C
High Level
Low Level
ANALOG-TO-DIGITAL CONVERTER
(INCLUDING MUX AND ATTENUATORS)
Total Unadjusted Error, TUE (12 VIN)
TUE (AIN, VCCP, 2.5 VIN, 5 VIN)
Differential Nonlinearity, DNL
Power Supply Sensitivity
Conversion Time (Analog Input or Int. Temp)
Conversion Time (External Temperature)
Input Resistance (2.5 V, 5 V, 12 V, VCCP1, VCCP2)
Input Resistance (AIN1, AIN2)
100
±1
754.8
9.6
140
5
±4
±3
±1
856.8
200
%
%
LSB
%/V
µs
ms
k
M
(See Note 3)
0°C TA 100°C4
(See Note 4)
ANALOG OUTPUT
Output Voltage Range
Total Unadjusted Error, TUE
Full-Scale Error
Zero-Scale Error
Differential Nonlinearity, DNL
Integral Nonlinearity
Output Source Current
Output Sink Current
0 2.5 V
±3 %
±1 ±5 %
IL = 2 mA
2 LSB No Load
± 1 LSB Monotonic by Design
± 1 LSB
2 mA
1 mA
FAN RPM-TO-DIGITAL CONVERTER
Accuracy
Full-Scale Count
FAN1 and FAN2 Nominal Input RPM5
Internal Clock Frequency
DIGITAL OUTPUTS NTEST_OUT
Output High Voltage, VOH
Output Low Voltage, VOL
OPEN-DRAIN DIGITAL OUTPUTS
(INT, THERM, RESET)
Output Low Voltage, VOL
High Level Output Current, IOH
RESET and CI Pulsewidth
± 12 %
255
8800
rpm
4400
rpm
2200
rpm
1100
rpm
19.8 22.5 25.2 kHz
2.4 V
0.4 V
0.4 V
0.1 100 µA
20 45
ms
0°C TA 100°C
Divisor = 1, Fan Count = 153
Divisor = 2, Fan Count = 153
Divisor = 3, Fan Count = 153
Divisor = 4, Fan Count = 153
0°C TA 100°C
IOUT = +3.0 mA, VCC = 2.85 V – 3.60 V
IOUT = –3.0 mA, VCC = 2.85 V – 3.60 V
(See Note 6)
IOUT = –3.0 mA, VCC = 3.60 V
VOUT = VCC
OPEN-DRAIN SERIAL DATA BUS OUTPUT
(SDA)
Output Low Voltage, VOL
High Level Output Current, IOH
0.4 V
0.1 100 µA
IOUT = –3.0 mA, VCC = 2.85 V – 3.60 V
VOUT = VCC
–2– REV. 0




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ADM1024 diode

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