ADM9240 查看數據表（PDF） - Analog Devices
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ADM9240 Datasheet PDF : 22 Pages
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ADM9240–SPECIFICATIONS1, 2
(TA = TMIN to TMAX, VCC = VMIN to VMAX, unless otherwise noted)
Parameter
Min Typ Max Units Test Conditions/Comments
POWER SUPPLY
Supply Voltage, VCC
Supply Current, ICC
2.85 5
1.4
1.0
25
5.75 V
2.0
mA
mA
100
µA
Interface Inactive, ADC Active
ADC Inactive, DAC Active
Shutdown Mode
TEMPERATURE-TO-DIGITAL CONVERTER
Accuracy
Resolution
±3
°C
±2
°C
± 0.5
°C
–40°C ≤ TA ≤ +125°C
TA = +25°C
ANALOG-TO-DIGITAL CONVERTER
(INCLUDING MUX AND ATTENUATORS)
Total Unadjusted Error, TUE
Differential Nonlinearity, DNL
Power Supply Sensitivity
Total Monitoring Cycle Time
Input Resistance
100
±2
%
Note 3
±1
LSB
±1
%/V
311
331
µs
+25°C ≤ TA ≤ +125°C (Note 4)
311
353
µs
140
200
kΩ
–40°C ≤ TA ≤ +125°C (Note 4)
ANALOG OUTPUT
Output Voltage Range
Total Unadjusted Error, TUE
Full-Scale Error
Zero Error
Differential Nonlinearity, DNL
Integral Nonlinearity
Output Source Current
Output Sink Current
0
1.25 V
±3
%
±1
±3
%
IL = 2 mA
2
LSB No Load
±1
LSB
±1
LSB Monotonic by Design
2
mA
1
mA
FAN RPM-TO-DIGITAL CONVERTER
Accuracy
Full-Scale Count
FAN1 and FAN2 Nominal Input RPM
Internal Clock Frequency
DIGITAL OUTPUT NTEST_OUT
Output High Voltage, VOH
Output Low Voltage, VOL
OPEN-DRAIN DIGITAL OUTPUTS
(INT, RESET, CI)
Output Low Voltage, VOL
High Level Output Current, IOH
RESET and CI Pulsewidth
±6
%
± 12 %
255
+25°C ≤ TA ≤ +125°C
–40oC ≤ TA ≤ +125°C
8800
rpm
Divisor = 1, Fan Count = 153
(Note 5)
4400
rpm
Divisor = 2, Fan Count = 153
(Note 5)
2200
rpm
Divisor = 3, Fan Count = 153
(Note 5)
1100
rpm
Divisor = 4, Fan Count = 153
(Note 5)
21.1
22.5 23.9 kHz
+25°C ≤ TA ≤ +125°C
19.8
22.5 25.2 kHz
–40oC ≤ TA ≤ +125°C
2.4
V
IOUT = 5.0 mA,
VCC = 4.25 V–5.75 V
2.4
V
IOUT = 3.0 mA,
VCC = 2.85 V–3.45 V
0.4
V
IOUT = –5.0 mA,
VCC = 4.25 V–5.75 V
0.4
V
IOUT = –3.0 mA,
VCC = 2.85 V–3.45 V
0.4
V
IOUT = –5.0 mA, VCC = 5.75 V
0.4
V
IOUT = –3.0 mA, VCC = 3.45 V
0.1
100
µA
VOUT = VCC
20
45
ms
–2–
REV. 0
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