adm2485 Analog Devices, Inc., adm2485 Datasheet - Page 11

• Manufacturer Part Number: adm2485
• Description: High Speed Isolated Rs-485 Transceiver With Integrated Transformer Driver
• Manufacturer: Analog Devices, Inc.

TYPICAL PERFORMANCE CHARACTERISTICS
Figure 17. Logic Side Supply Current (I
Figure 18. Bus Side Supply Current (I
2.40
2.35
2.30
2.25
2.20
2.15
2.10
2.05
2.00
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
60
50
40
30
20
10
0
0
–40
–40
–40
Figure 16. Unloaded Supply Current vs. Temperature
I
I
I
I
DD2
DD2
DD2
DD2
I
I
I
I
I
DD1
DD1
DD1
DD1
DD2
_ PROFIBUS LOAD_TxD = 16Mbps_V
_PROFIBUS LOAD_TxD = 2Mbps_V
_NO LOAD_TxD = 16Mbps_V
_NO LOAD_TxD = 2Mbps_V
–20
_PROFIBUS LOAD_TxD = 16Mbps_V
_NO LOAD_TxD = 16Mbps_V
_PROFIBUS LOAD_TxD = 2Mbps_V
_NO LOAD_TxD = 2Mbps_V
–20
–20
_DE_ENABLE_V
I
DD1
_RE_ENABLE_V
0
0
0
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
DD1
20
20
20
= 5.5V
DD2
DD1
DD2
DD1
DD2
DD1
= 2 mA) vs. Temperature
DD1
= 1 mA) vs. Temperature
= 5.00V
= 5.5V
40
40
40
= 5.00V
= 5.00V
= 5.00V
DD2
DD2
DD1
DD1
= 5.00V
= 5.00V
= 5.00V
60
= 5.00V
60
60
80
80
80
Rev. 0 | Page 11 of 20
3
2
Figure 21. Driver/Receiver Propagation Delay, Low to High
60
50
40
30
20
10
60
50
40
30
20
10
CH1
CH3 2.0V Ω
0
0
–40
–40
Figure 20. Receiver Propagation Delay vs. Temperature
Figure 19. Driver Propagation Delay vs. Temperature
Rx PROP DELAY,
Rx PROP DELAY,
2.0V Ω
DI
B
A
–20
–20
CH2 2.0V Ω M20.0ns 1.25GS/s
(R
t
t
PLHA
PLHB
LDIFF
= 54 Ω, C
0
0
t
t
PLH
PHL
TEMPERATURE (°C)
TEMPERATURE (°C)
t
t
PHLB
PHLA
_V
_V
IT 8.0ps/pt
DD2
DD2
L1
20
20
= C
= 5.00V
= 5.00V
L2
= 100 pF)
40
40
A CH3
60
60
ADM2485
2.60V
80
80