Datasheet

ADM2491E
Rev. B | Page 8 of 16
TEST CIRCUITS
V
OC
V
OD
06985-003
R
L
2
R
L
2
Figure 3. Driver Voltage Measurement
60Ω
V
OD
375Ω
375Ω
V
TEST
06985-004
Figure 4. Driver Voltage Measurement
V
DD1
GND
1
A
B
V
DD2
GND
2
Y
Z
TxD
DE
RxD
ADM2491E
06985-005
GALVANIC ISOLATION
R
TERMINATION
RE
Figure 5. Supply Current Measurement Test Circuit
C
L2
C
L1
R
LDIFF
Y
Z
06985-006
Figure 6. Driver Propagation Delay
C
L
V
OUT
A
B
06985-007
Figure 7. Receiver Propagation Delay
06985-008
Y
Z
V
CC
V
OUT
S2S1
R
L
C
L
0V OR 3V
DE
Figure 8. Driver Enable/Disable
06985-009
A
RE
B
V
CC
V
OUT
S2
S1
R
L
C
L
RE IN
+1.5V
–1.5V
Figure 9. Receiver Enable/Disable