ADT7468 查看數據表（PDF） - ON Semiconductor
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ADT7468 Datasheet PDF : 81 Pages
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ADT7468
SPECIFICATIONS
TA = TMIN to TMAX, VCC = VMIN to VMAX, unless otherwise noted.
All voltages are measured with respect to GND, unless otherwise specified. Typicals are at TA = 25°C and represent most likely parametric
norms. Logic inputs accept input high voltages up to VMAX even when device is operating down to VMIN. Timing specifications are tested at
logic levels of VIL = 0.8 V for a falling edge and VIH = 2.0 V for a rising edge. SMBus timing specifications are guaranteed by design and are
not production tested.
Table 1.
Parameter
POWER SUPPLY
Supply Voltage
Supply Current, ICC
TEMP-TO-DIGITAL CONVERTER
Local Sensor Accuracy
Resolution
Remote Diode Sensor Accuracy
Resolution
Remote Sensor Source Current
ANALOG-TO-DIGITAL CONVERTER
(INCLUDING MUX AND ATTENUATORS)
Total Unadjusted Error (TUE)
Differential Nonlinearity (DNL)
Power Supply Sensitivity
Conversion Time (Voltage Input)
Conversion Time (Local Temperature)
Conversion Time (Remote Temperature)
Total Monitoring Cycle Time
Total Monitoring Cycle Time
Input Resistance
FAN RPM-TO-DIGITAL CONVERTER
Accuracy
Full-Scale Count
Nominal Input RPM
Internal Clock Frequency
Min
Typ
Max
3.0
3.3
5.5
3
20
±1.5
−3.5
+2
−4
+2
0.25
±1.5
−3.5
+2
−4.5
+2
0.25
6
36
96
Unit Test Conditions/Comments
V
mA Interface inactive, ADC active
µA Standby mode
°C
0°C ≤ TA ≤ 70°C
°C
−40°C ≤ TA ≤ +100°C
°C
−40°C ≤ TA ≤ +120°C
°C
°C
0°C ≤ TA ≤ 70°C; 0°C ≤ TD ≤ 120°C
°C
−40°C ≤ TA ≤ +100°C; 0°C ≤ TD ≤ +120°C
°C
−40°C ≤ TA ≤ +120°C; 0°C ≤ TD ≤ +120°C
°C
µA First current
µΑ Second current
µΑ Third current
±2
%
For 12 V and 5 V channels
±1.5
%
For all other channels
±1
LSB 8 bits
±0.1
%/V
11
ms Averaging enabled
12
ms Averaging enabled
38
ms Averaging enabled
145
ms Averaging enabled
19
ms Averaging disabled
40
70
100
kΩ
For VCC channel
80
140
200
kΩ For all other channels
109
329
5000
10000
±5
±7
±10
65,535
%
0°C ≤ TA ≤ 70°C , 3.3 V
%
−40°C ≤ TA ≤ +120°C , 3.3 V
%
−40°C ≤ TA ≤ +120°C , 5.5 V
RPM Fan count = 0xBFFF
RPM Fan count = 0x3FFF
RPM Fan count = 0x0438
RPM Fan count = 0x021C
85.5
90
94.5
kHz 0°C ≤ TA ≤ 70°C, VCC = 3.3 V
83.7
90
96.3
kHz −40°C ≤ TA ≤ +120°C, VCC = 3.3 V
81
90
99
kHz −40°C ≤ TA ≤ +120°C, VCC = 5.5 V
Rev. 3 | Page 3 of 81 | www.onsemi.com
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