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부품번호 | ADM1034 기능 |
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기능 | Thermal Monitor and Fan Speed (RPM) Controller | ||
제조업체 | Analog Devices | ||
로고 | |||
전체 30 페이지수
Thermal Monitor and
Fan Speed (RPM) Controller
ADM1034
FEATURES
1 local and 2 remote temperature channels
±1°C accuracy on local and remote channels
Automatic remote temperature channels, up to 1 kΩ
Fast (up to 64 measurements per second)
SMBus 2.0, 1.1, and 1.0 compliant
SMBus address input/LOCATION input to UDID
Programmable over-/undertemperature limits
Programmable fault queue
SMBusALERT output
Fail-safe overtemperature comparator output
Fan speed (RPM) controller
Look-up table for temperature-to-fan-speed control
Linear and discrete options for look-up table
FAN_FAULToutput
THERM input, used to time PROCHOT assertions
REF input, used as reference for THERM (PROCHOT)
3 V to 5.5 V supply
Small 16-lead QSOP package
APPLICATIONS
Desktop and notebook PCs
Embedded systems
Telecommunications equipment
LCD projectors
FUNCTIONAL BLOCK DIAGRAM
VCC
6
ADM1034
DRIVE1 1
DRIVE2 3
MANUAL FAN
SPEED CONTROL
REGISTERS
TEMPERATURE-TO-
FAN-SPEED
LOOK-UP TABLE
FAN SPEED
CONTROLLER
FAN RESPONSE
SMBUS
ADDRESS
SERIAL BUS
INTERFACE
ADDRESS
POINTER
REGISTER
STATUS
REGISTER
ALERT
THERM
MASK
REGISTERS
LIMIT
COMPARATOR
FAULT
QUEUE
16 SCL
15 SDA
8 FAN_FAULT
14 ALERT
7 THERM
TACH1 2
TACH2 4
TACH SIGNAL
CONDITIONING
REF 8
LOCATION 13
D1– 9
D1+ 10
D2– 11
D2+ 12
SRC
BLOCK
BAND GAP
TEMPERATURE
SENSOR
ANALOG
MULTIPLEXER
FAN
SPEED
COUNTER
ADC
VALUE AND
LIMIT
REGISTERS
FAULT
QUEUE
HYSTERESIS
REGISTERS
OFFSET
REGISTERS
BAND GAP
REFERENCE
CONVERSION
RATE REGISTER
CONFIGURATION
REGISTERS
5
GND
Figure 1.
THERM PERCENT
TIMER
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 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: 781.326.8703 © 2004 Analog Devices, Inc. All rights reserved.
ADM1034
SPECIFICATIONS
TA = TMIN to TMAX, VCC = VMIN to VMAX, unless otherwise noted.1
Table 1.
Parameter
Min Typ
POWER SUPPLY
Supply Voltage, VCC2
Supply Current, ICC
3.0 3.30
Undervoltage Lockout Threshold
Power-On Reset Threshold
TEMPERATURE-TO-DIGITAL CONVERTER
Internal Sensor Accuracy
Resolution
External Diode Sensor Accuracy
Resolution
Remote Sensor Source Current
1
−4
−3
Series Resistance Cancellation
Power Supply Sensitivity
Conversion Time (Local Temperature)
Conversion Time (Remote Temperature)
Total Conversion Time
OPEN-DRAIN DIGITAL OUTPUTS
(ALERT, THERM, FAN_FAULT, DRIVE1, DRIVE2)3
Output Low Voltage, VOL
High Level Output Leakage Current, IOH
DIGITAL INPUT LEAKAGE CURRENT
(TACH1, TACH2)
Input High Current, IIH
Input Low Current, IIL
Input Capacitance, CIN
DIGITAL INPUT LOGIC LEVELS
(TACH1, TACH2)
Input High Voltage, VIH
Input Low Voltage, VIL
Hysteresis
OPEN-DRAIN SERIAL DATA
BUS OUTPUT (SDA)
Output Low Voltage, VOL
High Level Output Leakage Current, IOH
SERIAL BUS DIGITAL INPUTS
(SCL, SDA)
Input High Voltage, VIH
Input Low Voltage, VIL
Hysteresis
−1
2.0
−0.3
2.1
2.5
±1
0.03125
±0.5
±1
0.03125
85
34
5
±1
11
32
75
0.1
7
500
0.1
500
Max
3.6
3
900
2.4
±2
+2
±1
+2
1000
0.4
1
1
5.5
+0.8
0.4
1
0.8
Unit Test Conditions/Comments
V
mA Interface inactive, ADC active
µA Standby mode
V
V
°C 20°C ≤ TA ≤ 60°C
°C −40°C ≤ TA ≤ +100°C
°C
°C −40°C ≤ TD ≤ +100°C; TA = +40°C
°C −40°C ≤ TD ≤ +100°C; +20°C ≤ TA ≤ +60°C
°C −40°C ≤ TD ≤ +100°C; −40°C ≤ TA ≤ +100°C
°C
µA High level
µΑ Mid level
µΑ Low level
Ω
%/V
ms Averaging enabled
ms Averaging enabled
ms Averaging enabled
V IOUT = −6.0 mA; VCC = +3 V
µA VOUT = VCC; VCC = 3 V
µA −VIN = VCC
µA VIN = 0
pF
V
V
mV p−p
V IOUT = −6.0 mA; VCC
µA VOUT = VCC
V
V
mV
Rev. 0 | Page 4 of 40
4페이지 ADM1034
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
DRIVE1 1
TACH1 2
DRIVE2 3
TACH2 4
GND 5
VCC 6
THERM 7
FAN_FAULT/REF 8
16 SCL
15 SDA
ADM1034
TOP VIEW
(Not to Scale)
14 ALERT
13 LOCATION
12 D2+
11 D2–
10 D1+
9 D1–
Figure 3. Pin Configuration
Table 3. Pin Function Descriptions
Pin No. Mnemonic
Description
1 DRIVE1
DRIVE1 Pin Drives Fan 1. Open-drain output. Requires a pull-up resistor.
2 TACH1
Fan 1 Fan Speed Measurement Input. Connects to the fan’s TACH output to measure the fan speed.
3 DRIVE2
DRIVE2 Pin Drives Fan 2. Open-drain output. Requires a pull-up resistor.
4 TACH2
Fan 2 Fan Speed Measurement Input. Connects to the fan’s TACH output to measure the fan speed.
5 GND
Ground for Analog and Digital Circuitry.
6 VCC
7 THERM
Power. Can be powered by 3.3 V standby power if monitoring in low power states is required.
Can be configured as an overtemperature interrupt output, or as an input (to monitor PROCHOT output of
an INTEL CPU). A timer measures assertion times on the THERM pin (either input or output).
8 FAN_FAULT/REF FAN_FAULT: Open-Drain Output. Asserted low when one or both fans stall. Requires a pull-up resistor to VCC.
REF: Analog Input Reference for the THERM Input.
9 D1−
Cathode Connection for the First Thermal Diode or Diode-Connected Transistor.
10 D1+
Anode Connection for the First Thermal Diode or Diode-Connected Transistor.
11 D2−
Cathode Connection for the Second Thermal Diode or Diode-Connected Transistor.
12 D2+
Anode Connection for the Second Thermal Diode or Diode-Connected Transistor.
13 LOCATION
8-Level Analog Input. Used to determine the correct SMBus version and the SMBus address (in
fixed-and-discoverable mode) and to set the LLL bits in the UDID (in ARP-capable mode).
14 ALERT
Open-Drain Output. SMBusALERT pin. Alerts the system in the case of out-of-limit events, such as over
temperature. Can be configured as sticky SMBus mode or comparator mode.
15 SDA
Serial Bus Bidirectional Data. Connects to the SMBus master’s data line. Requires pull-up resistor if not
provided elsewhere in the system.
16 SCL
Serial SMBus Clock Input. Connects to the SMBus master’s clock line. Requires pull-up resistor if not already
provided in the system.
Rev. 0 | Page 7 of 40
7페이지 | |||
구 성 | 총 30 페이지수 | ||
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DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |