ADM1024–SPECIFICATIONS
Parameter
POWER SUPPLY
Supply Voltage, V
CC
Supply Current, I
CC
1, 2
(T
A
= T
MIN
to T
MAX
, V
CC
= V
MIN
to V
MAX
, unless otherwise noted)
Typ
3.30
1.4
1.0
45
Max
5.5
3.5
145
±
3
±
2
±
5
150
9
Unit
V
mA
mA
µA
°C
°C
°C
°C
°C
°C
µA
µA
Test Conditions/Comments
Min
2.8
Interface Inactive, ADC Active
ADC Inactive, DAC Active
Shutdown Mode
0°C
≤
T
A
≤
100°C
T
A
= 25°C
0°C
≤
T
A
≤
100°C
25°C
High Level
Low Level
TEMPERATURE-TO-DIGITAL CONVERTER
Internal Sensor Accuracy
Resolution
External Diode Sensor Accuracy
Resolution
Remote Sensor Source Current
ANALOG-TO-DIGITAL CONVERTER
(INCLUDING MUX AND ATTENUATORS)
Total Unadjusted Error, TUE (12 V
IN
)
TUE (AIN, V
CCP
, 2.5 V
IN
, 5 V
IN
)
Differential Nonlinearity, DNL
Power Supply Sensitivity
Conversion Time (Analog Input or Int. Temp)
Conversion Time (External Temperature)
Input Resistance (2.5 V, 5 V, 12 V, V
CCP1
, V
CCP2
)
Input Resistance (AIN1, AIN2)
ANALOG OUTPUT
Output Voltage Range
Total Unadjusted Error, TUE
Full-Scale Error
Zero-Scale Error
Differential Nonlinearity, DNL
Integral Nonlinearity
Output Source Current
Output Sink Current
FAN RPM-TO-DIGITAL CONVERTER
Accuracy
Full-Scale Count
FAN1 and FAN2 Nominal Input RPM
5
80
4
±
1
±
3
±
1
110
6.5
80
±
1
754.8
9.6
140
5
±
4
±
3
±
1
856.8
200
%
%
LSB
%/V
µs
ms
kΩ
MΩ
V
%
%
LSB
LSB
LSB
mA
mA
%
rpm
rpm
rpm
rpm
kHz
V
V
(See Note 3)
0°C
≤
T
A
≤
100°C
4
(See Note 4)
0
±
1
2
±
1
2
1
2.5
±
3
±
5
±
1
I
L
= 2 mA
No Load
Monotonic by Design
±
12
255
8800
4400
2200
1100
22.5
0°C
≤
T
A
≤
100°C
Divisor = 1, Fan Count = 153
Divisor = 2, Fan Count = 153
Divisor = 3, Fan Count = 153
Divisor = 4, Fan Count = 153
0°C
≤
T
A
≤
100°C
I
OUT
= +3.0 mA, V
CC
= 2.85 V – 3.60 V
I
OUT
= –3.0 mA, V
CC
= 2.85 V – 3.60 V
(See Note 6)
Internal Clock Frequency
DIGITAL OUTPUTS NTEST_OUT
Output High Voltage, V
OH
Output Low Voltage, V
OL
OPEN-DRAIN DIGITAL OUTPUTS
(INT,
THERM, RESET)
Output Low Voltage, V
OL
High Level Output Current, I
OH
RESET
and CI Pulsewidth
OPEN-DRAIN SERIAL DATA BUS OUTPUT
(SDA)
Output Low Voltage, V
OL
High Level Output Current, I
OH
19.8
2.4
25.2
0.4
20
0.1
45
0.4
100
V
µA
ms
I
OUT
= –3.0 mA, V
CC
= 3.60 V
V
OUT
= V
CC
0.1
0.4
100
V
µA
I
OUT
= –3.0 mA, V
CC
= 2.85 V – 3.60 V
V
OUT
= V
CC
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