Test circuits/timing diagrams (continued) – Rainbow Electronics MAX14998 User Manual
Page 4
Two-Lane and Four-Lane DisplayPort Passive
Switches with Separate AUX/HPD Control
MAX4998/MAX14998
4 ______________________________________________________________________________________
Test Circuits/Timing Diagrams (continued)
Figure 2. Differential On-Loss, Differential Off-Isolation, and Differential Crosstalk
COM_+
COM_-
V
DD
+3.3V
NC_+
NC_-
SEL1
GND
DIFFERENTIAL INSERTION LOSS/DIFFERENTIAL RETURN LOSS
PORT 1
PORT 2
PORT 3
PORT 4
NETWORK
ANALYZER
0.1µF
V
IN+
V
IN-
V
OUT+
V
OUT-
NO_+
NO_-
SEL2
0V
0V
DIFFERENTIAL INSERTION LOSS = 20log
(
)
V
OUT+
- V
OUT-
V
IN+
- V
IN-
50
Ω
50
Ω
50
Ω
50
Ω
50
Ω
50
Ω
MEASUREMENTS ARE STANDARDIZED AGAINST SHORTS AT IC TERMINALS.
DIFFERENTIAL OFF-ISOLATION IS MEASURED BETWEEN COM_ AND “OFF” NO_ OR NC_ TERMINAL ON EACH SWITCH.
DIFFERENTIAL ON-LOSS IS MEASURED BETWEEN COM_ AND “ON” NO_ OR NC_ TERMINAL ON EACH SWITCH.
DIFFERENTIAL CROSSTALK IS MEASURED BETWEEN ANY TWO PAIRS.
MAX4998
MAX14998
COM_+
COM_-
V
DD
+3.3V
NC_+
NC_-
SEL1
GND
DIFFERENTIAL OFF-ISOLATION
PORT 1
PORT 2
PORT 3
PORT 4
NETWORK
ANALYZER
0.1µF
V
IN+
V
IN-
V
OUT+
V
OUT-
NO_+
NO_-
SEL2
V
DD
V
DD
DIFFERENTIAL OFF-ISOLATION = 20log
(
)
V
OUT+
- V
OUT-
V
IN+
- V
IN-
50
Ω
50
Ω
50
Ω
50
Ω
50
Ω
50
Ω
MAX4998
MAX14998
COM_+
COM_-
V
DD
+3.3V
NO_+/NC_+
NO_-/NC_-
SEL1
GND
DIFFERENTIAL CROSSTALK
PORT 1
PORT 2
PORT 3
PORT 4
NETWORK
ANALYZER
0.1µF
V
IN+
V
IN-
V
OUT+
V
OUT-
NO_+/NC_+
NO_-/NC_-
SEL2
0V OR V
DD
0V OR V
DD
DIFFERENTIAL CROSSTALK = 20log
(
)
V
OUT+
- V
OUT-
V
IN+
- V
IN-
50
Ω
50
Ω
COM_+
COM_-
50
Ω
50
Ω
50
Ω
50
Ω
50
Ω
50
Ω
MAX4998
MAX14998