Datasheet

MAX4928A/MAX4928B
DisplayPort/PCIe Passive Switches
_______________________________________________________________________________________ 7
IN_+
X_+
OUT_+
IN_-
X_-
OUT_-
D_+
D_-
V
DD
+3.3V
TX_+
RX1_+
RX0_+
TX_-
RX1_-
RX0_-
SELV
DD
GND
DIFFERENTIAL INSERTION-LOSS/DIFFERENTIAL RETURN LOSS
PORT 1
PORT 2
PORT 3
PORT 4
NETWORK
ANALYZER
0.1μF
DIFFERENTIAL INSERTION-LOSS = 20log
V
IN+
V
IN-
V
OUT+
V
OUT-
HPD_+
HPD_-
AUX_+
AUX_-
LE
0V
V
IN+
- V
IN-
V
OUT+
- V
OUT-
( )
MAX4928A
MAX4928B
IN_+
X_+
OUT_+
IN_-
X_-
OUT_-
D_+
D_-
V
DD
+3.3V
TX_+
RX1_+
RX0_+
TX_-
RX1_-
RX0_-
SELV
DD
GND
DIFFERENTIAL OFF-ISOLATION
PORT 1
PORT 2
PORT 3
PORT 4
NETWORK
ANALYZER
0.1μF
DIFFERENTIAL OFF-ISOLATION = 20log
V
IN+
V
IN-
V
OUT+
V
OUT-
HPD_+
HPD_-
AUX_+
AUX_-
LE
0V
V
IN+
- V
IN-
V
OUT+
- V
OUT-
( )
MAX4928A
MAX4928B
IN_+
X_+
OUT_+
IN_-
X_-
OUT_-
D_+/D_-
HPD_+/HPD_-
V
DD
+3.3V
IN_+
X_+
OUT_+
IN_-
X_-
OUT_-
SEL
0V OR V
DD
GND
DIFFERENTIAL CROSSTALK
PORT 1
PORT 2
PORT 3
PORT 4
NETWORK
ANALYZER
50Ω
50Ω
50Ω
50Ω
0.1μF
DIFFERENTIAL CROSSTALK = 20log
V
IN+
V
IN-
V
OUT+
V
OUT-
AUX_+/AUX_-
TX_+/TX_-
RX1_+/RX1_-
HP0_+/HP0_-
LE
0V
V
IN+
- V
IN-
V
OUT+
- V
OUT-
( )
MAX4928A
MAX4928B
50Ω
50Ω
50Ω
50Ω
50Ω
50Ω
50Ω
50Ω
50Ω
50Ω
50Ω
50Ω
50Ω
50Ω
50Ω
50Ω
50Ω
50Ω
50Ω
50Ω
50Ω
50Ω
50Ω
50Ω
50Ω
50Ω
MEASUREMENTS ARE STANDARDIZED AGAINST SHORTS AT IC TERMINALS.
DIFFERENTIAL OFF-ISOLATION IS MEASURED BETWEEN IN_ AND “OFF” D_ OR TX_, X_ AND “OFF” HPD_ OR RX1_, OUT_ AND “OFF” AUX_ OR RX0_ TERMINAL ON EACH SWITCH.
DIFFERENTIAL ON-LOSS IS MEASURED BETWEEN IN_ AND “ON” D_ OR TX_, X_ AND “ON” HPD_ OR RX1_, OUT_ AND “ON” AUX_ OR RX0_ TERMINAL ON EACH SWITCH.
DIFFERENTIAL CROSSTALK IS MEASURED BETWEEN ANY TWO PAIRS.
Test Circuits/Timing Diagrams (continued)
Figure 2. Differential On-Loss, Differential Off-Isolation, and Differential Crosstalk