Datasheet

ADM2485
Rev. A | Page 10 of 20
TYPICAL PERFORMANCE CHARACTERISTICS
2.40
2.35
2.30
2.25
2.20
2.15
2.10
2.05
2.00
–40 –20 0 20 40 60 80
SUPPLY CURRENT (mA)
TEMPERATURE (°C)
I
DD1
_RE_ENABLE_V
DD1
= 5.5V
I
DD2
_DE_ENABLE_V
DD1
= 5.5V
06021-016
Figure 7. Unloaded Supply Current vs. Temperature
5.0
4.0
3.0
2.0
1.0
0
4.5
3.5
2.5
1.5
0.5
–40 –20 0 20 40 60 80
I
DD1
SUPPLY CURRENT (mA)
TEMPERATURE (°C)
I
DD1
_PROFIBUS LOAD_TxD = 16Mbps_V
DD1
= 5.00V
I
DD1
_PROFIBUS LOAD_TxD = 2Mbps_V
DD1
= 5.00V
I
DD1
_NO LOAD_TxD = 16Mbps_V
DD1
= 5.00V
I
DD1
_NO LOAD_TxD = 2Mbps_V
DD1
= 5.00V
06021-017
Figure 8. Logic Side Supply Current (I
DD1
= 1 mA) vs. Temperature
60
40
50
30
20
10
0
–40 –20 0 20 40 60 80
I
DD2
SUPPLY CURRENT (mA)
TEMPERATURE (°C)
I
DD2
_ PROFIBUS LOAD_TxD = 16Mbps_V
DD2
= 5.00V
I
DD2
_NO LOAD_TxD = 16Mbps_V
DD2
= 5.00V
I
DD2
_NO LOAD_TxD = 2Mbps_V
DD2
= 5.00V
I
DD2
_PROFIBUS LOAD_TxD = 2Mbps_V
DD2
= 5.00V
06021-018
Figure 9. Bus Side Supply Current (I
DD2
= 2 mA) vs. Temperature
60
40
50
30
20
10
0
–40 –20 0 20 40 60 80
DRIVER PROPAGATION DELAY (ns)
TEMPERATURE (°C)
t
PLHA
t
PLHB
t
PHLA
t
PHLB
06021-019
Figure 10. Driver Propagation Delay vs. Temperature
60
40
50
30
20
10
0
–40 –20 0 20 40 60 80
RECEIVER PROPAGATION DELAY (ns)
TEMPERATURE (°C)
Rx PROP DELAY, t
PLH
_V
DD2
= 5.00V
Rx PROP DELAY,
t
PHL
_V
DD2
= 5.00V
06021-020
Figure 11. Receiver Propagation Delay vs. Temperature
CH1 2.0V Ω
CH3 2.0V Ω
CH2 2.0V Ω M20.0ns 1.25GS/s
IT 8.0ps/pt
A CH3 2.60V
2
3
DI
B
A
0
6021-021
Figure 12. Driver/Receiver Propagation Delay, Low to High
(R
LDIFF
= 54 Ω, C
L1
= C
L2
= 100 pF)