ADM1028 datasheet(5/16 Pages) AD

Teilenummer	ADM1028

Bauteilbeschribung	Remote Thermal Diode Monitor with Linear Fan Control

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Hersteller	AD [Analog Devices]

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REV. A

–5–

Typical Performance Characteristics–ADM1028

LEAKAGE RESISTANCE – M

30

1

20

10

0

–20

10

100

–30

–10

D+ TO VDD

D+ TO GND

TPC 1. Temperature Error vs. PC Board Track Resistance

(D+ to VDD)

FREQUENCY – Hz

14

1

12

10

8

6

4

0

10

100k

1000M

2

10k

100M

1k

10M

100

1M

VIN = 250mV p-p

VIN = 100mV p-p

TPC 2. Temperature Error vs. Power Supply

Noise Frequency

FREQUENCY – Hz

14

7

0

1

10

100

1k

10k

100k

1M

10M

100M

1G

1

2

3

4

5

6

8

9

10

11

12

13

VIN = 25mV p-p

VIN = 50mV p-p

VIN = 100mV p-p

TPC 3. Temperature Error vs. Common-Mode

Noise Frequency

TEMPERATURE – C

4

–3

0

10

2030

40

50

6070

8090

–5

–4

–2

–1

0

1

2

3

100

LOWER SPEC LEVEL

UPPER SPEC LEVEL

TPC 4. Temperature Error of ADM1028 vs. Pentium® III

Temperature

CAPACITANCE – nF

40

5

0

1020

30

4050

60

70

–5

0

10

15

20

25

30

35

TPC 5. Temperature Error vs. Capacitance Between

D+ and D–

SCLK FREQUENCY – kHz

1.77

1

5

10

25

50

75

100

1.67

1.72

1.82

1.87

1.92

1.97

2.02

250

500

750

1000

VDD = 5V

VDD = 3.3V

TPC 6. Standby Current vs. Clock Frequency

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