ADM488 Analog Devices, ADM488 Datasheet - Page 7

• Manufacturer Part Number: ADM488
• Description: Full-Duplex/ Low Power/ Slew Rate Limited/ EIA RS-485 Transceivers
• Manufacturer: Analog Devices

10dB/DIV
REV. 0
Figure 16. Driver Output Waveform
and FFT Plot Transmitting @ 150 kHz
Figure 10. Receiver Output Low
Voltage vs. Output Current
–10
–20
–30
–40
–50
–60
–70
–80
–90
Figure 13. Driver Output High
Voltage vs. Output Current
40
35
30
25
20
15
10
100
0%
5
0
90
10
0
0
0
0 0.5
0.5
1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5
OUTPUT VOLTAGE – Volts
OUTPUT VOLTAGE – Volts
1.0
500kHz/DIV
1.5
2.0
2.5
5.0
5MHz
Typical Performance Characteristics–
Figure 14. Driver Differential Output
Voltage vs. Output Current
80
70
60
50
40
30
20
10
Figure 11. Receiver Output High
Voltage vs. Output Current
Figure 17. Radiated Emissions
0
–10
–15
–20
30
–5
80
70
60
50
40
30
20
10
0
0
3.4
0
0.5
3.6
1.0 1.5 2.0
OUTPUT VOLTAGE – Volts
OUTPUT VOLTAGE – Volts
3.8
FREQUENCY – MHz
4.0
–7–
4.2
2.5
4.4
3.0
4.6
3.5 4.0
4.8
200
LIMIT
5.0
4.5
Figure 15. Driving 4000 ft. of Cable
100
0%
90
10
Figure 18. Conducted Emissions
80
70
60
50
40
30
20
10
0
90
80
70
60
50
40
30
20
10
0
Figure 12. Driver Output Low
Voltage vs. Output Current
T
T
T
0
0.3
LOG FREQUENCY (0.15–30) – MHz
ADM488/ADM489
0.5
0.6 1
OUTPUT VOLTAGE – Volts
1.0
1.5
3
6
2.0
10
2.5
30
LIMIT
3.0
RO
DI