EVAL-ADM1031EB ON Semiconductor, EVAL-ADM1031EB Datasheet - Page 3

• Manufacturer Part Number: EVAL-ADM1031EB
• Description: BOARD EVAL FOR ADM1031
• Manufacturer: ON Semiconductor
• Type: Temperature Sensorr

Specifications of EVAL-ADM1031EB

• Contents: Evaluation Board
• For Use With/related Products: ADM1031
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

PIN ASSIGNMENT
ELECTRICAL CHARACTERISTICS
POWER SUPPLY
TEMPERATURE−TO−DIGITAL CONVERTER
OPEN−DRAIN DIGITAL OUTPUTS (THERM, INT, FAN_FAULT, PWM_OUT)
Pin No.
Supply Voltage, V
Supply Current, I
Local Sensor Accuracy
Resolution
Remote Diode1 Sensor Accuracy
Remote Diode2 Sensor Accuracy
Resolution
Remote Sensor Source Current
Output Low Voltage, V
High−Level Output Leakage Current, I
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
INT(SMBALERT)
PWM_OUT1
TACH1/AIN1
PWM_OUT2
TACH2/AIN2
FAN_FAULT
Mnemonic
Parameter
THERM
CC
CC
GND
VCC
ADD
SDA
D1–
D1+
D2–
D2+
SCL
OL
Digital Output, Open−Drain. Pulse width modulated output to control fan speed. Requires pullup
resistor (10 kW typical).
Digital/Analog Input. Fan tachometer input to measure FAN1 fan speed. Can be reprogrammed as an
analog input to measure speed of a 2−wire fan via a sense resistor (2 W typical).
Digital Output, Open−Drain. Pulse width modulated output to control FAN2 fan speed. Requires
pullup resistor (10 kW typical).
Digital/Analog Input. Fan tachometer input to measure FAN2 fan speed. Can be reprogrammed as an
analog input to measure speed of a 2−wire fan via a sense resistor (2 W typical).
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 pullup resistor (10 kW).
Digital Output, Open−Drain. Can be used to signal a fan fault. Drives second fan to full speed if one
fan fails. Requires pullup resistor (typically 10 kW).
Analog Input. Connected to cathode of first remote 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 first remote temperature−sensing diode.
Analog Input. Connected to cathode of second remote temperature−sensing diode.
Analog Input. Connected to anode of second remote 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 (SMBus ALERT) output for
temperature/fan speed interrupts. Requires pullup resistor (10 kW typical).
Digital I/O, Serial Bus Bidirectional Data. Open−drain output. Requires pullup resistor (2.2 kW typical).
Digital Input, Serial Bus Clock. Requires pullup resistor (2.2 kW typical).
OH
T
A
= T
Interface inactive, ADC active
Standby mode
60°C ≤ T
60°C ≤ T
High level
Low level
I
V
MIN
OUT
OUT
to T
= –6.0 mA; V
= V
MAX
Test Conditions/Comments
D
D
http://onsemi.com
CC
≤ 100°C
≤ 100°C
, V
; V
CC
CC
= V
CC
= 3.0 V
3
MIN
= 3.0 V
to V
MAX
Description
, unless otherwise noted. (Note 1)
Min
3.0
0.125
±1.0
0.25
±0.5
±0.5
Typ
180
3.3
1.4
0.1
32
11
±1.75
Max
±3.0
±1.0
3.6
3.0
0.4
1.0
50
Unit
mA
mA
mA
mA
°C
°C
°C
°C
°C
V
V