Maxim /MAX4889A Manual de usuario Pagina 5

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MAX4888/MAX4889
2.5Gbps PCI Express Passive Switches
_______________________________________________________________________________________
5
Typical Operating Characteristics (continued)
(T
A
= +25°C, unless otherwise noted.)
EYE DIAGRAM
(V+ = 3.3V, f = 1.25GHz,
600mV
P-P
PRBS SIGNAL, R
S
= R
L
= 50Ω)
50ps/div
*PRBS = PSEUDORANDOM BIT SEQUENCE
GEN I; 2.5Gps; UI = 400ps
V
COM_+
V
COM_-
50mV/div
MAX4888/89 toc10
EYE DIAGRAM
(V+ = 2.5V, f = 1.25GHz,
600mV
P-P
PRBS SIGNAL, R
S
= R
L
= 50Ω)
50ps/div
*PRBS = PSEUDORANDOM BIT SEQUENCE
GEN I; 2.5Gps; UI = 400ps
V
COM_+
V
COM_-
50mV/div
MAX4888/89 toc09
TURN-ON/-OFF TIME vs. SUPPLY VOLTAGE
SUPPLY VOLTAGE (V)
t
ON
/t
OFF
(ns)
MAX4888/89 toc07
1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0 3.2 3.4 3.6
0
20
40
60
80
100
120
140
160
180
200
220
240
NO_ t
ON
NO_ t
OFF
NC_ t
ON
NC_ t
OFF
EYE DIAGRAM
(V+ = 1.8V, f = 1.25GHz,
600mV
P-P
PRBS SIGNAL, R
S
= R
L
= 50Ω)
50ps/div
*PRBS = PSEUDORANDOM BIT SEQUENCE
GEN I; 2.5Gps; UI = 400ps
V
COM_+
V
COM_-
50mV/div
MAX4888/89 toc08
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