ADM1024
ELECTRICAL CHARACTERISTICS
T
A
= T
MIN
to T
MAX
, V
CC
= V
MIN
to V
MAX
, unless otherwise noted. (Note 1 and 2)
Parameter
POWER SUPPLY
Supply Voltage, V
CC
Supply Current, I
CC
Interface inactive, ADC Active
ADC Inactive, DAC Active
Shutdown Mode
0°C
≤
T
A
≤
100°C
T
A
= 25°C
±1.0
0°C
≤
T
A
≤
100°C
25°C
High level
Low level
(Note 3)
80
4.0
±3.0
±1.0
110
6.5
150
9.0
±4.0
±3.0
±1.0
±1.0
(Note 4)
(Note 4)
80
754.8
9.6
140
5.0
0
I
L
= 2 mA
±1.0
No load
Monotonic by design
±1.0
2.0
1.0
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
I
OUT
= 3.0 mA, V
CC
= 3.60 V
V
OUT
= V
CC
20
0.1
45
19.8
2.4
0.4
0.4
100
8800
4400
2200
1100
22.5
25.2
±12
255
RPM
2.0
±1.0
2.5
±3.0
±5.0
200
856.8
±5.0
2.8
3.3
1.4
1.0
45
5.5
3.5
145
±3.0
±2.0
V
mA
mA
°C
°C
°C
°C
mA
Test Conditions/Comments
Min
Typ
Max
Unit
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 (A
IN
, V
CCP
, 2.5 V
IN
, 5.0 V
IN
)
Differential Non−linearity (DNL)
Power Supply Sensitivity
Conversion Time
(Analog Input or Internal Temperature)
Conversion Time (External Temperature)
Input Resistance (2.5 V, 5.0 V, 12 V, V
CCP1
, V
CCP2
)
Input Resistance (A
IN1
, A
IN2
)
ANALOG OUTPUT
Output Voltage Range
Total Unadjusted Error (TUE)
Full−Scale Error
Zero−Scale Error
Differential Non−linearity (DNL)
Integral Non−linearity
Output Source Current
Output Sink Current
FAN RPM−TO−DIGITAL CONVERTER
Accuracy
Full−Scale Count
FAN1 to FAN2 Nominal Input RPM (Note 5)
%
V
%
%
LSB
LSB
LSB
mA
mA
%
%
LSB
%/V
ms
ms
kW
MW
Internal Clock Frequency
DIGITAL OUTPUTS (NTEST_OUT)
Output High Voltage, V
OH
Output Low Voltage, V
OL
Output Low Voltage, V
OL
High Level Output Leakage Current, I
OH
RESET and CI Pulsewidth
kHz
V
V
V
mA
ms
OPEN−DRAIN DIGITAL OUTPUTS (INT, THERM, RESET)
(Note 6)
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