ADM1034
Table 4. ELECTRICAL CHARACTERISTICS (TA = TMIN to TMAX, VCC = VMIN to VMAX, unless otherwise noted). (Note 1)
Parameter
Test Conditions/Comments
Min
Typ
Max
Unit
Power Supply
Supply Voltage, VCC (Note 2)
Supply Current, ICC
Interface Inactive, ADC Active
Standby Mode
3.0
3.30
3.6
V
−
−
3.0
mA
−
−
900
mA
Undervoltage Lockout Threshold
−
2.5
−
V
Power-On Reset Threshold
Temperature-to-Digital Converter
1.0
−
2.4
V
Internal Sensor Accuracy
Resolution
External Diode Sensor Accuracy
Resolution
+20C TA +60C
−40C TA +100C
−
1.0
2.0
C
−
−
2.5
−
0.03125
−
C
−40C TD +100C; TA = +40C
−
−40C TD +100C; +20C TA +60C
−
−40C TD +100C; −40C TA +100C
−
0.5
1.0
C
1.0
1.25
−
2.5
−
0.03125
−
C
Remote Sensor Source Current
High Level
Mid Level
Low Level
−
87
−
mA
−
33
−
−
5.5
−
Series Resistance Cancellation
Power Supply Sensitivity
−
−
1000
W
−
1.0
−
%/V
Conversion Time (Local Temperature)
Averaging Enabled
−
11
−
ms
Conversion Time (Remote Temperature) Averaging Enabled
−
32
−
ms
Total Conversion Time
Averaging Enabled
−
75
−
ms
Open-Drain Digital Outputs (ALERT, THERM, FAN_FAULT, DRIVE1, DRIVE2) (Note 3)
Output Low Voltage, VOL
IOUT = −6.0 mA; VCC = +3 V
High Level Output Leakage Current, IOH VOUT = VCC; VCC = 3 V
Digital Input Leakage Current (TACH1, TACH2)
−
−
0.4
V
−
0.1
1.0
mA
Input High Current, IIH
−VIN = VCC
Input Low Current, IIL
VIN = 0
Input Capacitance, CIN
Digital Input Logic Levels (TACH1, TACH2)
−1.0
−
−
mA
−
−
1.0
mA
−
7.0
−
pF
Input High Voltage, VIH
Input Low Voltage, VIL
Hysteresis
2.0
−
5.5
V
−0.3
−
+0.8
V
−
500
−
mV p−p
Open-Drain Serial Data Bus Output (SDA)
Output Low Voltage, VOL
High Level Output Leakage Current, IOH
Serial Data Bus Inputs (SCL, SDA)
IOUT = −6.0 mA; VCC
VOUT = VCC
−
−
0.4
V
−
0.1
1.0
mA
Input High Voltage, VIH
Input Low Voltage, VIL
Hysteresis
2.1
−
−
V
−
−
0.8
V
−
500
−
mV
Analog Inputs (Location, REF)
Input Resistance
80
125
160
kW
AGTL + INPUT (THERM)
Input High Level
−
0.75 x
−
V
REF
Input Low Level
−
−
0.4
V
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