ADT7467
Table 3. ELECTRICAL SPECIFICATIONS (TA = TMIN to TMAX, VCC = VMIN to VMAX, unless otherwise noted.) (Note 1)
Parameter
Test Conditions/Comments
Min
Typ
Max
POWER SUPPLY
Supply Voltage
3.0
3.3
5.5
Supply Current, ICC
Interface Inactive, ADC Active
Standby Mode
−
−
3
−
−
20
TEMPERATURE-TO-DIGITAL CONVERTER
Local Sensor Accuracy
0C TA 70C
−40C TA +100C
−40C TA +120C
−
−
1.5
−3.5
−
+2
−4
−
+2
Resolution
−
0.25
−
Remote Diode Sensor Accuracy
0C TA 70C; 0C TD 120C
−
0.5
1.5
0C TA 105C; 0C TD 120C
−3.5
−
+2
−40C TA +120C; 0C TD +120C
−4.5
−
+2
Resolution
−
0.25
−
Remote Sensor Source Current
First Current
Second Current
Third Current
−
6
−
−
36
−
−
96
−
ANALOG-TO-DIGITAL CONVERTER (INCLUDING MUX AND ATTENUATORS)
Total Unadjusted Error (TUE)
Differential Nonlinearity (DNL)
8 Bits
Power Supply Sensitivity
Conversion Time (Voltage Input)
Averaging Enabled
Conversion Time (Local Temperature)
Averaging Enabled
Conversion Time (Remote Temperature) Averaging Enabled
Total Monitoring Cycle Time
Averaging Enabled
Averaging Disabled
−
−
1.5
−
−
1
−
0.1
−
−
11
−
−
12
−
−
38
−
−
145
−
−
19
−
Input Resistance
For VCC Channel
For All Channels other than VCC
FAN RPM-TO-DIGITAL CONVERTER
Accuracy
0C TA 70C, 3.3 V
−40C TA +120C, 3.3 V
−40C TA +120C, 5.5 V
Full-scale Count
Nominal Input RPM
Fan Count = 0xBFFF
Fan Count = 0x3FFF
Fan Count = 0x0438
Fan Count = 0x021C
Internal Clock Frequency
0C TA 70C, VCC = 3.3 V
−40C TA +120C, VCC = 3.3 V
Internal Clock Frequency
*40C TA +120C, VCC = 5.5 V
OPEN-DRAIN DIGITAL OUTPUTS, PWM1 to PWM3, XTO
Current Sink, IOL
Output Low Voltage, VOL
IOUT = *8.0 mA, VCC = 3.3 V
High Level Output Current, IOH
VOUT = VCC
OPEN-DRAIN SERIAL DATA BUS OUTPUT (SDA)
Output Low Voltage, VOL
High Level Output Current, IOH
IOUT = *4.0 mA, VCC = 3.3 V
VOUT = VCC
40
80
100
80
140
200
−
−
5
−
−
7
−
−
10
−
−
65,535
−
109
−
−
329
−
−
5000
−
−
10,000
−
85.5
90
94.5
83.7
90
96.3
81
90
99
−
−
8.0
−
−
0.4
−
0.1
1.0
−
−
0.4
−
0.1
1.0
Unit
V
mA
mA
C
C
C
C
mA
%
LSB
%/V
ms
ms
ms
ms
kW
%
RPM
kHz
kHz
mA
V
mA
V
mA
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