Low-Resistance DPDT Switches
with Negative Rail
VIN
NO_
or NC_
CB
COM_
RL
LOGIC
INPUT
MAX14535E–MAX14539E
VOUT
CL
CL INCLUDES FIXTURE AND STRAY CAPACITANCE.
( ) VOUT = VIN_
RL
RL + RON
LOGIC VIH
INPUT VIL
50%
tR < 5ns
tF < 5ns
SWITCH 0V
OUTPUT
tOFF
VOUT 0.9 x V0UT
tON
0.1 x VOUT
CONTROL DEPENDS ON SWITCH CONFIGURATION;
INPUT POLARITY DETERMINED BY SENSE OF SWITCH.
Figure 1. Switching Time
VIN
COM1
NETWORK
ANALYZER
50Ω
50Ω
NC1 MAX14535E–
MAX14539E
VOUT
MEAS
50Ω
NO1*
50Ω
REF
50Ω
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 THE OTHER CHANNEL.
Figure 2. On-Loss, Off-Isolation, and Crosstalk
OFF-ISOLATION
=
20log
VOUT
VIN
ON-LOSS = 20log VOUT
VIN
CROSSTALK = 20log VOUT
VIN
*FOR CROSSTALK THIS PIN IS NO2.
NC2 AND COM2 ARE OPEN.
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