Datasheet

ADM2482E/ADM2487E
Rev. A | Page 4 of 20
Parameter Symbol Min Typ Max Unit Test Conditions
TRANSFORMER DRIVER
Oscillator Frequency f
OSC
400 500 600 kHz V
DD1
= 5.0 V
230 330 430 kHz V
DD1
= 3.3 V
Switch-On Resistance R
ON
0.5 1.5 Ω
Start-Up Voltage V
START
2.2 2.5 V
COMMON-MODE TRANSIENT IMMUNITY
1
25 kV/μs V
CM
= 1 kV, transient
magnitude = 800 V
1
CM is the maximum common-mode voltage slew rate that can be sustained while maintaining specification-compliant operation. V
CM
is the common-mode potential
difference between the logic and bus sides. The transient magnitude is the range over which the common-mode is slewed. The common-mode voltage slew rates
apply to both rising and falling common-mode voltage edges.
TIMING SPECIFICATIONS
T
A
= −40°C to +85°C, unless otherwise noted.
Table 2. ADM2482E
Parameter Symbol Min Typ Max Unit Test Conditions
DRIVER
Propagation Delay t
DPLH
, t
DPHL
100 ns R
DIFF
= 54 Ω, C
L
= 100 pF, see Figure 21 and Figure 26
Output Skew t
DSKEW
8 ns R
DIFF
= 54 Ω, C
L
= 100 pF, see Figure 21 and Figure 26
Rise Time/Fall Time t
DR
, t
DF
15 ns R
DIFF
= 54 Ω, C
L
= 100 pF, see Figure 21 and Figure 26
Enable Time t
ZL
, t
ZH
120 ns R
L
= 110 Ω, C
L
= 50 pF, see Figure 22 and Figure 28
Disable Time t
LZ
, t
HZ
150 ns R
L
= 110 Ω, C
L
= 50 pF, see Figure 22 and Figure 28
RECEIVER
Propagation Delay t
PLH
, t
PHL
110 ns C
L
= 15 pF, see Figure 23 and Figure 27
Output Skew t
SKEW
8 ns C
L
= 15 pF, see Figure 23 and Figure 27
Enable Time t
ZL
, t
ZH
13 ns R
L
= 1 kΩ, C
L
= 15 pF, see Figure 24 and Figure 29
Disable Time t
LZ
, t
HZ
13 ns R
L
= 1 kΩ, C
L
= 15 pF, see Figure 24 and Figure 29
Table 3. ADM2487E
Parameter Symbol Min Typ Max Unit Test Conditions
DRIVER
Propagation Delay t
DPLH
, t
DPHL
250 700 ns R
DIFF
= 54 Ω, C
L
= 100 pF, see Figure 21 and Figure 26
Output Skew t
DSKEW
100 ns R
DIFF
= 54 Ω, C
L
= 100 pF, see Figure 21 and Figure 26
Rise Time/Fall Time t
DR
, t
DF
200 1100 ns R
DIFF
= 54 Ω, C
L
= 100 pF, see Figure 21 and Figure 26
Enable Time t
ZL
, t
ZH
2.5 μs R
L
= 110 Ω, C
L
= 50 pF, see Figure 22 and Figure 28
Disable Time t
LZ
, t
HZ
200 ns R
L
= 110 Ω, C
L
= 50 pF, see Figure 22 and Figure 28
RECEIVER
Propagation Delay t
PLH
, t
PHL
200 ns C
L
= 15 pF, see Figure 23 and Figure 27
Output Skew t
SKEW
30 ns C
L
= 15 pF, see Figure 23 and Figure 27
Enable Time t
ZL
, t
ZH
13 ns R
L
= 1 kΩ, C
L
= 15 pF, see Figure 24 and Figure 29
Disable Time t
LZ
, t
HZ
13 ns R
L
= 1 kΩ, C
L
= 15 pF, see Figure 24 and Figure 29