ADT7476 View Datasheet(PDF) - ON Semiconductor
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ADT7476 Datasheet PDF : 68 Pages
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ADT7476
Table 4. ELECTRICAL CHARACTERISTICS (TA = TMIN to TMAX, VCC = VMIN to VMAX, unless otherwise noted.) (Note 1)
Parameter
Conditions
Min
Typ
Max
Power Supply
Supply Voltage
3.0
3.3
3.6
Supply Current, ICC
Temperature-to-Digital Converter
Interface Inactive, ADC Active
−
1.5
3.0
Local Sensor Accuracy
Resolution
0°C ≤ TA ≤ 85°C
−40°C ≤ TA ≤ 125°C
−
±0.5
±1.5
−
−
±2.5
−
0.25
−
Remote Diode Sensor Accuracy
Resolution
0°C ≤ TA ≤ 85°C
−40°C ≤ TA ≤ 125°C
−
±0.5
±1.5
−
−
±2.5
−
0.25
−
Remote Sensor Source Current
Low Level
High Level
−
11
−
−
180
−
Analog-to-Digital Converter (Including MUX and Attentuators)
Total Unadjusted Error (TUE)
For 12 V Channel
For All Other Channels
−
−
±2
−
−
±1.5
Differential Non-linearity (DNL)
8 Bits
−
−
±1
Power Supply Sensitivity
−
±0.1
−
Conversion Time
Voltage Input
Local Temperature
Remote Temperature
Averaging Enabled
−
11
−
−
12
−
−
38
−
Total Monitoring Cycle Time
Averaging Enabled
Averaging Disabled
−
145
−
−
19
−
Input Resistance
For VCCP channel
For all other channels
70
120
−
70
114
−
Fan RPM-to-Digital Converter
Accuracy
Full-Scale Count
0°C ≤ TA ≤ 70°C
−40°C ≤ TA ≤ +120°C
−
−
±6
−
−
±10
−
−
65,535
Nominal Input RPM
Fan Count = 0xBFFF
Fan Count = 0x3FFF
Fan Count = 0x0438
Fan Count = 0x021C
−
109
−
−
329
−
−
5,000
−
−
10,000
−
Open-Drain Digital Outputs, PWM1 TO PWM3, XTO
Current Sink, IOL
Output Low Voltage, VOL
IOUT = −8.0 mA
High Level Output Current, IOH
VOUT = VCC
Open-Drain Serial Data Bus Output (SDA)
−
−
8.0
−
−
0.4
−
0.1
20
Output Low Voltage, VOL
IOUT = −4.0 mA
High Level Output Current, IOH
VOUT = VCC
SMBus Digital Inputs (SCL, SDA) (Note 2)
−
−
0.4
−
0.1
1.0
Input High Voltage, VIH
Input Low Voltage, VIL
Hysteresis
2.0
−
−
−
−
0.8
−
500
−
Digital Input Logic Levels (TACH Inputs)
Input High Voltage, VIH
Input Low Voltage, VIL
Hysteresis
Maximum Input Voltage
Minimum Input Voltage
2.0
−
3.6
−0.3
−
0.8
−
0.5
−
Unit
V
mA
°C
°C
mA
%
LSB
%/V
ms
ms
kW
%
RPM
mA
V
mA
V
mA
V
V
mV
V
V
V p-p
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