ADM489AN datasheet(7/12 Pages) AD

Part #	ADM489AN

Description	Full-Duplex, Low Power, Slew Rate Limited, EIA RS-485 Transceivers

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Manufacturer	AD [Analog Devices]

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ADM488/ADM489

–7–

REV. 0

Typical Performance Characteristics–

OUTPUT VOLTAGE – Volts

40

35

0

0.5

2.5

1.0

1.5

2.0

20

15

10

5

30

25

Figure 10. Receiver Output Low

Voltage vs. Output Current

OUTPUT VOLTAGE – Volts

0

0.5

5.0

1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5

0

–10

–90

–50

–60

–70

–80

–20

–40

–30

Figure 13. Driver Output High

Voltage vs. Output Current

Figure 16. Driver Output Waveform

and FFT Plot Transmitting @ 150 kHz

10

0%

100

90

T

RO

DI

10

0%

100

90

10dB/DIV

500kHz/DIV

0

5MHz

OUTPUT VOLTAGE – Volts

0

–5

–20

3.4

3.6

5.0

3.8

4.0

4.2

4.4

4.6

4.8

–10

–15

Figure 11. Receiver Output High

Voltage vs. Output Current

OUTPUT VOLTAGE – Volts

80

0

0.5

4.5

1.0

1.5 2.0

3.0

3.5

4.0

2.5

70

40

30

20

10

60

50

Figure 14. Driver Differential Output

Voltage vs. Output Current

LIMIT

30

200

FREQUENCY – MHz

80

70

60

50

40

30

20

10

0

Figure 17. Radiated Emissions

OUTPUT VOLTAGE – Volts

0

0.5

3.0

1.0

1.5

2.0

2.5

90

80

0

40

30

20

10

70

50

60

Figure 12. Driver Output Low

Voltage vs. Output Current

Figure 15. Driving 4000 ft. of Cable

LOG FREQUENCY (0.15–30) – MHz

0.3

0.6

13

6

10

30

80

0

70

40

30

20

10

60

50

LIMIT

Figure 18. Conducted Emissions

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