參數資料
型號： ADM1033ARQZ
廠商： Analog Devices, Inc.
英文描述： Thermal Monitor and Fan Speed (RPM) Controller
中文描述： 熱監(jiān)測和風扇轉速（RPM）控制器
文件頁數： 7/40頁
文件大?。?/td> 1164K
代理商： ADM1033ARQZ
ADM1033
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
Rev. 0 | Page 7 of 40
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
TACH
ALERT Comp
NC
THERM
V
CC
GND
DRIVE
SDA
SMBusALERT
LOCATION
D+
FAN_FAULT/REF
D–
NC
NC
SCL
TOP VIEW
(Not to Scale)
ADM1033
0
NC = NO CONNECT
Figure 3. Pin Configuration
Table 3. Pin Function Descriptions
Pin No.
Mnemonic
1
DRIVE
2
TACH
3
ALERT Comp
Description
DRIVE Pin Drives the Fan. Open-drain output. Requires a pull-up resistor.
Fan Speed Measurement Input. Connects to the fan’s TACH output to measure the fan speed.
Open-Drain Active Low Output. Asserts low whenever a measurement goes outside its programmed limits,
if not masked. Automatically goes high again when the measured parameter falls back within its limits.
No Connect.
Ground for Analog and Digital Circuitry.
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).
FAN_FAULT: Open-Drain Output. Asserts low whenever the fan stalls.
REF: Analog Input Reference for THERM input.
Cathode Connection for the Thermal Diode or Diode-Connected Transistor.
Anode Connection for the Thermal Diode or Diode-Connected Transistor.
No Connect.
No Connect.
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).
Open-Drain Output. Alerts the system in the case of out-of-limit events such as overtemperature. Can be
reset only with software.
Serial Bus Bidirectional Data. Connects to the SMBus master’s data line. Requires a pull-up resistor, if one is
not provided elsewhere in the system.
Serial SMBus Clock Input. Connects to the SMBus master’s clock line. Requires a pull-up resistor, if one is
not provided elsewhere in the system.
4
5
6
7
NC
GND
V
CC
THERM
8
FAN_FAULT/REF
9
10
11
12
13
D
D+
NC
NC
LOCATION
14
SMBusALERT
15
SDA
16
SCL
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