ADM1030–SPECIFICATIONS1
(TA = TMIN to TMAX, VCC = VMIN to VMAX, unless otherwise noted.)
Parameter
Min
Typ
Max
Unit
Test Conditions/Comments
POWER SUPPLY
Supply Voltage, VCC
Supply Current, ICC
3.0
3.30
1.4
32
5.5
3
50
V
mA
mA
Interface Inactive, ADC Active
Standby Mode
TEMPERATURE-TO-DIGITAL CONVERTER
Internal Sensor Accuracy
Resolution
External Diode Sensor Accuracy
Resolution
±1
±3
±1
∞C
∞C
∞C
∞C
mA
mA
0.25
60∞C £ TD £ 100∞C
0.125
180
11
Remote Sensor Source Current
High Level
Low Level
OPEN-DRAIN DIGITAL OUTPUTS
(THERM, INT, FAN_FAULT, PWM_OUT)
Output Low Voltage, VOL
0.4
1
V
mA
IOUT = –6.0 mA; VCC = 3 V
VOUT = VCC; VCC = 3 V
High-Level Output Leakage Current, IOH
0.1
5
DIGITAL INPUT LEAKAGE CURRENT
Input High Current, IIH
Input Low Current, IIL
–1
mA
mA
pF
VIN = VCC
VIN = 0
1
Input Capacitance, CIN
DIGITAL INPUT LOGIC LEVELS2
(ADD, THERM, TACH)
Input High Voltage, VIH
2.1
V
V
Input Low Voltage, VIL
0.8
OPEN-DRAIN SERIAL DATA
BUS OUTPUT (SDA)
Output Low Voltage, VOL
High-Level Output Leakage Current, IOH
0.4
1
V
mA
IOUT = –6.0 mA; VCC = 3 V
VOUT = VCC
0.1
SERIAL BUS DIGITAL INPUTS
(SCL, SDA)
Input High Voltage, VIH
Input Low Voltage, VIL
Hysteresis
2.1
V
V
mV
0.8
500
FAN RPM-TO-DIGITAL CONVERTER
Accuracy
Resolution
±6
8
%
Bits
60∞C £ TA £ 100∞C
TACH Nominal Input RPM
4400
2200
1100
550
RPM
RPM
RPM
RPM
ms
Divisor N = 1, Fan Count = 153
Divisor N = 2, Fan Count = 153
Divisor N = 4, Fan Count = 153
Divisor N = 8, Fan Count = 153
Conversion Cycle Time
637
SERIAL BUS TIMING3
Clock Frequency, fSCLK
Glitch Immunity, tSW
10
100
kHz
ns
ms
See Figure 1
See Figure 1
See Figure 1
See Figure 1
See Figure 1
See Figure 1
See Figure 1
See Figure 1
See Figure 1
See Figure 1
See Figure 1
See Figure 1
50
Bus Free Time, tBUF
4.7
4.7
4
4
1.3
4
Start Setup Time, tSU;STA
Start Hold Time, tHD;STA
Stop Condition Setup Time tSU;STO
SCL Low Time, tLOW
SCL High Time, tHIGH
SCL, SDA Rise Time, tR
SCL, SDA Fall Time, tF
Data Setup Time, tSU;DAT
Data Hold Time, tHD;DAT
ms
ms
ms
ms
50
1000
300
ms
ns
ns
ns
ns
250
300
NOTES
1Typicals are at TA = 25∞C and represent most likely parametric norm. Shutdown current typ is measured with VCC = 3.3 V.
2ADD is a three-state input that may be pulled high, low or left open-circuit.
3Timing specifications are tested at logic levels of VIL = 0.8 V for a falling edge and VIH = 2.2 V for a rising edge.
Specifications subject to change without notice.
–2–
REV. A