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ADM1030ARQ View Datasheet(PDF) - Analog Devices

Part NameDescriptionManufacturer
ADM1030ARQ Intelligent Temperature Monitor and PWM Fan Controller ADI
Analog Devices ADI
ADM1030ARQ Datasheet PDF : 28 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
ADM1030
Pin No.
1
2
3, 4, 11, 12
5
6
7
8
9
10
13
14
15
16
Mnemonic
PWM_OUT
TACH/AIN
NC
GND
VCC
THERM
FAN_FAULT
D–
D+
ADD
INT
SDA
SCL
PIN FUNCTION DESCRIPTIONS
Description
Digital Output (Open-Drain). Pulsewidth modulated output to control fan speed. Requires pull-up
resistor (10 kW typical).
Digital/Analog Input. Fan tachometer input to measure fan speed. May be reprogrammed as an
analog input to measure speed of a 2-wire fan via a sense resistor (2 W typical)
Not Connected.
System Ground.
Power. Can be powered by 3.3 V Standby power if monitoring in low power states is required.
Digital I/O (Open-Drain). An active low thermal overload output that indicates a violation of a
temperature set point (overtemperature). Also acts as an input to provide external fan control.
When this pin is pulled low by an external signal, a status bit is set, and the fan speed is set to full-on.
Requires pull-up resistor (10 kW).
Digital Output (Open-Drain). Can be used to signal a fan failure. Requires pull-up resistor
(typically 10 kW).
Analog Input. Connected to cathode of an external temperature-sensing diode. The temperature-
sensing element is either a Pentium III substrate transistor or a general-purpose 2N3904.
Analog Input. Connected to anode of the external temperature-sensing diode.
Three-state Logic Input. Sets two lower bits of device SMBus address.
Digital Output (Open-Drain). Can be programmed as an interrupt output for temperature/fan
speed interrupts. Requires pull-up resistor (10 kW typical).
Digital I/O. Serial Bus Bidirectional Data. Open-drain output. Requires pull-up resistor
(2.2 kW typical).
Digital Input. Serial Bus Clock. Requires pull-up resistor (2.2 kW typ).
PIN CONFIGURATION
PWM_OUT 1
16 SCL
TACH/AIN 2
15 SDA
NC
NC
GND
3
14
ADM1030
4
13
TOP VIEW
5 (Not to Scale) 12
INT
ADD
NC
VCC 6
11 NC
THERM 7
10 D+
FAN_FAULT 8
9 D–
NC = NO CONNECT
–4–
REV. A
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