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ADM9240 Datasheet(PDF) 2 Page - Analog Devices

Part No. ADM9240
Description  Low Cost Microprocessor System Hardware Monitor
Download  22 Pages
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Maker  AD [Analog Devices]
Homepage  http://www.analog.com
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ADM9240 Datasheet(HTML) 2 Page - Analog Devices

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


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