ADM1026
SPECIFICATIONS1, 2, 3
Table 1. TA = TMIN to TMAX, VCC = VMIN to VMAX, unless otherwise noted.
Parameter
Min
Typ
Max
Test Conditions/Comments
Unit
POWER SUPPLY
Supply Voltage, 3.3 V STBY, 3.3 V MAIN
Supply Current, ICC
3.0
3.3
2.5
5.5
4.0
V
mA
Interface inactive, ADC active
TEMPERATURE-TO-DIGITAL CONVERTER
Internal Sensor Accuracy
Resolution
External Diode Sensor Accuracy
Resolution
±3
±3
°C
°C
°C
°C
µA
µA
±±
0°C < TD < ±00°C
±±
90
5.5
Remote Sensor Source Current
High level
Low level
ANALOG-TO-DIGITAL CONVERTER (including MUX and attenuators)
Total Unadjusted Error (TUE)4
Differential Nonlinearity (DNL)
±2
±±
%
LSB
%/V
ms
ms
kΩ
kΩ
kΩ
MΩ
kΩ
nA
nA
Power Supply Sensitivity
Conversion Time (Analog Input or Internal Temperature)5
Conversion Time (External Temperature)5
Input Resistance (+5 VIN, VCCP, AIN0 − AIN5
Input Resistance of +±2 VIN pin
Input Resistance of −±2 VIN pin
Input Resistance (AIN6 − AIN9
Input Resistance of VBAT pin4
VBAT Current Drain (when measured)
VBAT Current Drain (when not measured)
ANALOG OUTPUT (DAC)
Output Voltage Range
Total Unadjusted Error (TUE)
Zero Error
Differential Nonlinearity (DNL)
Integral Nonlinearity
Output Source Current
Output Sink Current
±0.±
±±.38
34.±3
±00
±00
±0
±2.06
36.±8
±20
±±5
±2
)
80
70
8
5
80
)
±00
80
6
±20
±00
CR2032 battery life >±0 years
0–2.5
±
V
%
±5
±±
IL = 2 mA
No load
Monotonic by design
LSB
LSB
LSB
mA
mA
±0.5
2
±
REFERENCE OUTPUT
Output Voltage
Output Voltage
Load Regulation (ISINK = 2 mA)
Load Regulation (ISOURCE = 2 mA)
Short Circuit Current
±.8
2.47
±.82
2.50
0.±5
0.±5
25
±.84
2.53
Bit 2 of Register 07h = 0
Bit 2 of Register 07h = ±
V
V
%
%
mA
mA
mA
VCC = 3.3 V
Output Current Source
Output Current Sink
2
2
FAN RPM-TO-DIGITAL CONVERTER6
Accuracy
Full-Scale Count
FAN0 to FAN7 Nominal Input RPM5
±±2
255
%
8800
4400
2200
±±00
22.5
Divisor = ±, fan count = ±53
Divisor = 2, fan count = ±53
Divisor = 4, fan count = ±53
Divisor = 8, fan count = ±53
RPM
RPM
RPM
RPM
kHz
Internal Clock Frequency
OPEN DRAIN O/Ps, PWM, GPIO0 to ±6
Output High Voltage, VOH
20
25
2.4
IOUT = 3.0 mA, VCC = 3.3 V
V
Rev. A | Page 3 of 56
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