ADM3483/ADM3485/ADM3488/ADM3490/ADM3491
TEST CIRCUITS
A/Y
R
L
/2
V
OD
05524-003
C
L
D
GENERATOR
1
V
OC
R
L
=
OUT
60Ω
50Ω
V
CC
C
L
= 15pF
2
05524-036
R
L
/2
B/Z
1
PPR = 250kHz, 50% DUTY CYCLE,
t
≤
6.0ns, Z = 50Ω.
R
O
2
C INCLUDES PROBE AND STRAY CAPACITANCE.
L
Figure 7. Differential Output Voltage
and Common-Mode Voltage Drivers
Figure 10. Driver Differential Output Delay and Transition Times
V
OM
R
L
= 27Ω
S1
D
OUT
C
L
= 15pF
2
V
CC
05524-004
375Ω
D
V
CC
V
OD
R
L
V
CM
=
–7V TO +12V
GENERATOR
1
50Ω
375Ω
V
OM
=
V
OH
+ V
OL
2
≈
1.5V
05524-037
1
PPR = 250kHz, 50% DUTY CYCLE,
t
≤
6.0ns, Z = 50Ω.
R
O
2
C INCLUDES PROBE AND STRAY CAPACITANCE.
L
Figure 8. Differential Output Voltage Drivers
with Varying Common-Mode Voltage
Figure 11. Driver Propagation Delays
S1
0V OR 3V
D
C
L
= 50pF
2
V
ID
R
OUT
R
L
= 110Ω
GENERATOR
1
0
05524-005
50Ω
V
OM
=
V
OH
+ V
OL
2
≈
1.5V
05524-038
V
OL
I
OL
(+)
V
OH
I
OH
(–)
1
PPR = 250kHz, 50% DUTY CYCLE,
t
≤
6.0ns, Z = 50Ω.
R
O
2
C INCLUDES PROBE AND STRAY CAPACITANCE.
L
Figure 9. CMOS Output Voltage High and
CMOS Output Voltage Low Receivers
Figure 12. Driver Enable and Disable Times (t
PZH
, t
PSH
, t
PHZ
)
Rev. B | Page 9 of 20
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