ADT7466 データシートの表示（PDF） - ON Semiconductor
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ADT7466 Datasheet PDF : 48 Pages
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ADT7466
SPECIFICATIONS
TA = TMIN to TMAX, VCC = VMIN to VMAX, unless otherwise noted.1
Table 1.
Parameter
POWER SUPPLY
Supply Voltage
Supply Current, ICC
TEMPERATURE-TO-DIGITAL
CONVERTER
Local Sensor Accuracy
Resolution
Remote Diode Sensor Accuracy
Resolution
Remote Sensor Source Current
Series Resistance Cancellation
THERMISTOR-TO-DIGITAL CONVERTER
Temperature Range
Resolution
Accuracy
ANALOG-TO-DIGITAL CONVERTER
Input Voltage Range
Total Unadjusted Error (TUE)
Differential Nonlinearity (DNL)
Power Supply Sensitivity
Conversion Time (AIN Input)
Conversion Time (Local
Temperature)
Conversion Time (Remote
Temperature)
Conversion Time (VCC)
Total Monitoring Cycle Time
Total Monitoring Cycle Time
FAN RPM-TO-DIGITAL CONVERTER
Accuracy
Full-Scale Count
Nominal Input RPM
Internal Clock Frequency
Min Typ
3.0 3.3
1.4
30
0.25
0.25
192
72
12
0
30
0.25
±2
0
±1
±1
8.30
8.63
35.22
7.93
68.38
87
78.64
109
329
5000
10000
81.92
Max
5.5
3
70
±1
±3
±1
±3
±5
2
100
VREF
±2.5
±1
8.65
8.99
36.69
8.26
71.24
90.63
±4
65,535
85.12
Unit Test Conditions/Comments
V
mA Interface inactive, ADC active
µA Standby mode, digital inputs low
°C 20°C ≤ TA ≤ 60°C; VCC = 3.3 V
°C −40°C ≤ TA ≤ +125°C; VCC = 3.3 V
°C
°C 20°C ≤ TA ≤ 60°C; −40°C ≤ TD ≤ +125°C; VCC = 3.3 V
°C −40°C ≤TA ≤ +105°C; −40°C ≤ TD ≤ +125°C; VCC = 3.3 V
°C −40°C ≤ TA ≤ +125°C; −40°C ≤ TD ≤ +125°C
°C
µA High level
µA Mid level
µA Low level
kΩ Maximum resistance in series with thermal diode that can be
cancelled out
°C Range over which specified accuracy is achieved. Wider range
can be used with less accuracy.
°C
°C Using specified thermistor and application circuit over specified
temperature range
V
VREF = 2.25V
%
LSB
%/V
ms Averaging enabled
ms Averaging enabled
ms Averaging enabled
ms Averaging enabled
ms Averaging enabled, Pin 11 and Pin 12 configured for AIN/TH
monitoring (see Table 15)
ms Averaging enabled, Pin 11 and Pin 12 configured for REM2
monitoring (see Table 15)
%
RPM Fan count = 0xBFFF
RPM Fan count = 0x3FFF
RPM Fan count = 0x0438
RPM Fan count = 0x021C
kHz
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