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ADM1032ARZREEL Datasheet(PDF) 3 Page - ON Semiconductor

Part No. ADM1032ARZREEL
Description  1C Remote and Local System Temperature Monitor
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Maker  ONSEMI [ON Semiconductor]
Homepage  http://www.onsemi.com
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ADM1032ARZREEL Datasheet(HTML) 3 Page - ON Semiconductor

 
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ADM1032
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3
Table 3. PIN ASSIGNMENT
Pin No.
Mnemonic
Description
1
VDD
Positive Supply, 3.0 V to 5.5 V.
2
D+
Positive Connection to Remote Temperature Sensor.
3
D−
Negative Connection to Remote Temperature Sensor.
4
THERM
THERM is an open-drain output that can be used to turn a fan on/off or throttle a CPU clock in the event
of an overtemperature condition. Requires pullup to VDD, the same supply as the ADM1032.
Note: Please refer to Power Sequencing Considerations; THERM Pin Pullup on page 15 for more
information.
5
GND
Supply Ground Connection.
6
ALERT
Open-Drain Logic Output Used as Interrupt or SMBus Alert.
7
SDATA
Logic Input/Output, SMBus Serial Data. Open-drain output. Requires pullup resistor.
8
SCLK
Logic Input, SMBus Serial Clock. Requires pullup resistor.
Table 4. ELECTRICAL CHARACTERISTICS
Parameter
Conditions
Min
Typ
Max
Unit
Power Supply
Supply Voltage, VDD
3.0
3.30
5.5
V
Average Operating Supply Current, ICC
0.0625 Conversions/Sec Rate (Note 1)
170
215
mA
Standby Mode
5.5
10
mA
Undervoltage Lockout Threshold
VDD Input, Disables ADC, Rising Edge
2.35
2.55
2.8
V
Power-On Reset Threshold
1.0
2.4
V
Temperature-To-Digital Converter
Local Sensor Accuracy
0 ≤ TA ≤ 100°C, VCC = 3 V to 3.6 V
±1
±3
°C
Resolution
1.0
°C
Remote Diode Sensor Accuracy
60°C ≤ TD ≤ 100°C, VCC = 3 V to 3.6 V
0°C ≤ TD ≤ 120°C
±1
±3
°C
Resolution
0.125
°C
Remote Sensor Source Current
High Level (Note 2)
Low Level (Note 2)
230
13
mA
Conversion Time
From stop bit to conversion complete
Both channels: one-shot mode with averaging
switched on
One-shot mode with averaging off (that is,
conversion rate = 32 or 64 conversions per second)
35.7
5.7
142.8
22.8
ms
Open-Drain Digital Outputs (THERM, ALERT)
Output Low Voltage, VOL
IOUT = −6.0 mA (Note 2)
0.4
V
High Level Output Leakage Current, IOH
VOUT = VDD (Note 2)
0.1
1.0
mA
Serial Bus Timing (Note 2)
Logic Input High Voltage, VIH
SCLK, SDATA
VDD = 3.0 V to 5.5 V
2.1
V
Logic Input Low Voltage, VIL
VDD = 3.0 V to 5.5 V
0.8
V
Hysteresis
SCLK, SDATA
500
mV
SDATA Output Low Sink Current
SDATA Forced to 0.6 V
6.0
mA
ALERT Output Low Sink Current
ALERT Forced to 0.4 V
1.0
mA
Logic Input Current, IIH, IIL
−1.0
+1.0
mA
Input Capacitance, SCLK, SDATA
5.0
pF


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