ADT7490ARQZ-REEL7 datasheet(10/76 Pages) AD

Part #	ADT7490ARQZ-REEL7

Description	dBCool Remote Thermal Monitor and Fan Controller with PECI Interface

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Manufacturer	AD [Analog Devices]

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ADT7490

Rev. 0 | Page 10 of 76

8

6

4

2

0

–2

–4

–6

–8

SERIES RESISTANCE (Ω)

0

200

400

600

800

1000

1200

1400

1600

DEV 1

DEV 2

DEV 3

Figure 10. Temperature Error vs. Series Resistance

–1.0

–0.5

0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

0

100

200

300

400

500

600

POWER SUPPLY NOISE FREQUENCY (MHz)

100mV

250mV

Figure 11. Local Temperature Error vs. Power Supply Noise Frequency

0.6

0.4

0.2

0

–0.2

–0.4

–0.6

–0.8

–1.0

–1.2

100mV

250mV

0

100

200

300

400

500

600

POWER SUPPLY NOISE FREQUENCY (MHz)

Figure 12. Remote Temperature Error vs. Power Supply Noise Frequency

20

15

10

5

0

–5

–10

0

100

200

300

400

500

600

COMMON-MODE NOISE FREQUENCY (MHz)

100mV

40mV

60mV

Figure 13. Temperature Error vs. Common-Mode Noise Frequency

160

140

120

100

80

60

40

20

0

–20

0

100

200

300

400

500

600

DIFFERENTIAL MODE NOISE FREQUENCY (MHz)

60mV

40mV

100mV

Figure 14. Temperature Error vs. Differential Mode Noise Frequency

5

0

–5

–10

–15

–20

–25

–30

–35

2

06

410

8

1214

1618

2022

CAPACITANCE (nF)

DEV 3

DEV 2

DEV 1

Figure 15. Temperature Error vs. Capacitance Between D+ and D−

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ADT7490ARQZ-REEL7 Datasheet(PDF) 10 Page - Analog Devices

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