ADM1024(2000) 데이터 시트보기 (PDF) - Analog Devices

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ADM1024
(Rev.:2000)

System Hardware Monitor with Remote Diode Thermal Sensing

Analog Devices 

ADM1024–SPECIFICATIONS1, 2

(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

2.8 3.30 5.5 V

1.4 2.6 mA Interface Inactive, ADC Active

1.0

mA ADC Inactive, DAC Active

45

145 µA

Shutdown Mode

TEMPERATURE-TO-DIGITAL CONVERTER

Internal Sensor Accuracy

±3

°C

±2

°C

Resolution

±1

°C

External Diode Sensor Accuracy

±5

°C

±3

°C

Resolution

±1

°C

Remote Sensor Source Current

80

110 150 µA

4

6.5 9

µA

0°C ≤ TA ≤ 100°C

TA = 25°C

0°C ≤ TA ≤ 100°C

25°C

High Level

Low Level

ANALOG-TO-DIGITAL CONVERTER

(INCLUDING MUX AND ATTENUATORS)

Total Unadjusted Error, TUE (12 VIN)

TUE (AIN, VCCP, 2.5 VIN, 5 VIN)

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, VCCP1, VCCP2) 100

Input Resistance (AIN1, AIN2)

±4

%

±3

%

±1

LSB

±1

%/V

754.8 856.8 µs

9.6

ms

140 200 kΩ

5

MΩ

(See Note 3)

0°C ≤ TA ≤ 100°C4

(See Note 4)

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

0

2.5 V

±3

%

±1

±5

%

IL = 2 mA

2

LSB No Load

±1

LSB Monotonic by Design

±1

LSB

2

mA

1

mA

FAN RPM-TO-DIGITAL CONVERTER

Accuracy

Full-Scale Count

FAN1 and FAN2 Nominal Input RPM5

Internal Clock Frequency

DIGITAL OUTPUTS NTEST_OUT

Output High Voltage, VOH

Output Low Voltage, VOL

OPEN-DRAIN DIGITAL OUTPUTS

(INT, THERM, RESET)

Output Low Voltage, VOL

High Level Output Current, IOH

RESET and CI Pulsewidth

± 12 %

255

8800

rpm

4400

rpm

2200

rpm

1100

rpm

19.8 22.5 25.2 kHz

2.4

V

0.4 V

0.4 V

0.1 100 µA

20

45

ms

0°C ≤ TA ≤ 100°C

Divisor = 1, Fan Count = 153

Divisor = 2, Fan Count = 153

Divisor = 3, Fan Count = 153

Divisor = 4, Fan Count = 153

0°C ≤ TA ≤ 100°C

IOUT = +3.0 mA, VCC = 2.85 V – 3.60 V

IOUT = –3.0 mA, VCC = 2.85 V – 3.60 V

(See Note 6)

IOUT = –3.0 mA, VCC = 3.60 V

VOUT = VCC

OPEN-DRAIN SERIAL DATA BUS OUTPUT

(SDA)

Output Low Voltage, VOL

High Level Output Current, IOH

0.4 V

0.1 100 µA

IOUT = –3.0 mA, VCC = 2.85 V – 3.60 V

VOUT = VCC

–2–

REV. 0

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