ADM1022ARQ datasheet(6/19 Pages) AD

Teilenummer	ADM1022ARQ

Bauteilbeschribung	Low-Cost PC Temperature Monitor and Fan Control ASIC

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Hersteller	AD [Analog Devices]

Direct Link	http://www.analog.com

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REV. 0

ADM1022

–6–

LEAKAGE RESISTANCE – M

30

20

–60

1

100

3.3

10

30

–10

–30

–40

–50

10

0

–20

DXP TO GND

DXP TO VCC (5V)

Figure 2. Temperature Error vs. PC Leakage Resistance

FREQUENCY – Hz

6

–1

50

50M

500

5k

50k

500k

5M

5

4

3

1

0

2

250mV p-p REMOTE

100mV p-p REMOTE

Figure 3. Temperature Error vs. Power Supply Noise

Frequency

FREQUENCY – Hz

–5

50

50M

500

5k

50k

500k

5M

25

20

15

5

0

10

25mV p-p

50mV p-p

100mV p-p

Figure 4. Temperature Error vs. Common-Mode Noise

Frequency

–Typical Performance Characteristics

MEASURED TEMPERATURE

0

110

10

20

30

40

50

120

20

30

0

10

40

50

60

70

80

90

100

60

70

80

90

100

Figure 5. Pentium® III Temperature Measurement vs.

ADM1022 Reading

DXP-DXN CAPACITANCE – nF

25

20

1.0

29.0

2.2

3.2

4.7

7.0

15

10

5

0

10.0

14.0

22.0

30

–5

ERROR

Figure 6. Temperature Error vs. Capacitance Between D+

and D–

SCLK FREQUENCY – Hz

80

30

0

1M

1k

5k

10k

25k

50k

75k 100k 250k 500k 750k

70

40

20

10

60

50

VCC = 5V

VCC = 3V

Figure 7. Standby Current vs. Clock Frequency

Pentium is a registered trademark of Intel Corporation.

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