ADT7468
SPECIFICATIONS
T A = T MIN to T MAX , V CC = V MIN to V MAX , unless otherwise noted.
All voltages are measured with respect to GND, unless otherwise specified. Typicals are at T A = 25°C and represent most likely parametric
norms. Logic inputs accept input high voltages up to V MAX even when device is operating down to V MIN . Timing specifications are tested at
logic levels of V IL = 0.8 V for a falling edge and V IH = 2.0 V for a rising edge. SMBus timing specifications are guaranteed by design and are
not production tested.
Table 1.
Parameter
Min
Typ
Max
Unit
Test Conditions/Comments
POWER SUPPLY
Supply Voltage
Supply Current, I CC
3.0
3.3
5.5
3
20
V
mA
μA
Interface inactive, ADC active
Standby mode
TEMP-TO-DIGITAL CONVERTER
Local Sensor Accuracy
Resolution
Remote Diode Sensor Accuracy
Resolution
Remote Sensor Source Current
?3.5
?4
?3.5
?4.5
0.25
0.25
6
36
96
±1.5
+2
+2
±1.5
+2
+2
°C
°C
°C
°C
°C
°C
°C
°C
μA
μΑ
μΑ
0°C ≤ T A ≤ 70°C
?40°C ≤ T A ≤ +100°C
?40°C ≤ T A ≤ +120°C
0°C ≤ T A ≤ 70°C; 0°C ≤ T D ≤ 120°C
?40°C ≤ T A ≤ +100°C; 0°C ≤ T D ≤ +120°C
?40°C ≤ T A ≤ +120°C; 0°C ≤ T D ≤ +120°C
First current
Second current
Third 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
±0.1
11
12
38
145
19
±2
±1.5
±1
%
%
LSB
%/V
ms
ms
ms
ms
ms
For 12 V and 5 V channels
For all other channels
8 bits
Averaging enabled
Averaging enabled
Averaging enabled
Averaging enabled
Averaging disabled
Input Resistance
40
80
70
140
100
200
k?
k?
For V CC channel
For all other channels
FAN RPM-TO-DIGITAL CONVERTER
Accuracy
Full-Scale Count
Nominal Input RPM
109
329
5000
10000
±5
±7
±10
65,535
%
%
%
RPM
RPM
RPM
RPM
0°C ≤ T A ≤ 70°C , 3.3 V
?40°C ≤ T A ≤ +120°C , 3.3 V
?40°C ≤ T A ≤ +120°C , 5.5 V
Fan count = 0xBFFF
Fan count = 0x3FFF
Fan count = 0x0438
Fan count = 0x021C
Internal Clock Frequency
85.5
83.7
81
90
90
90
94.5
96.3
99
kHz
kHz
kHz
0°C ≤ T A ≤ 70°C, V CC = 3.3 V
?40°C ≤ T A ≤ +120°C, V CC = 3.3 V
?40°C ≤ T A ≤ +120°C, V CC = 5.5 V
Rev. 3 | Page 3 of 81 | www.onsemi.com
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