Datasheet

MAX4670
Integrated T1/E1/J1 Short-Haul and
Long-Haul Protection Switch
12 ______________________________________________________________________________________
CAPACITANCE
METER
NC_ OR
NO_
COM_
GND
IN_
V
INL
OR
V
INH
0.1
µ
F
V+
f = 1MHz
V+
MAX4670
Figure 6. Channel Off-/On-Capacitance
Test Circuits/Timing Diagrams (continued)
MEASUREMENTS ARE STANDARDIZED AGAINST SHORTS AT IC TERMINALS.
OFF-ISOLATION IS MEASURED BETWEEN COM_ AND "OFF" NO_ OR NC_ TERMINAL ON EACH SWITCH.
ON-LOSS IS MEASURED BETWEEN COM_ AND "ON" NO_ OR NC_TERMINAL ON EACH SWITCH.
CROSSTALK IS MEASURED FROM ONE CHANNEL TO ALL OTHER CHANNELS.
SIGNAL DIRECTION THROUGH SWITCH IS REVERSED; WORST VALUES ARE RECORDED.
+3V
V
OUT
V+
IN_
NC_
NO_
COM_
V
IN
MAX4670
OFF-ISOLATION = 20log
V
OUT
V
IN
ON-LOSS = 20log
V
OUT
V
IN
CROSSTALK = 20log
V
OUT
V
IN
NETWORK
ANALYZER
50
Ω
50
Ω
50
Ω
50
Ω
MEAS REF
0.1
µ
F
0 OR V+
50
Ω
GND
Figure 5. On-Loss, Off-Isolation, and Crosstalk