Date: 5th Jun 2011
75-Ohm RF SPDT switch for broadband applications
Peregrine Semiconductor Corporation has made available
the RoHS compliant PE42750 75-Ohm RF Switch for broadband
consumer applications including cable televisions (CATV),
digital television (DTV), multi-tuner digital video recorders
(DVR), set-top boxes, PCTVs and video game consoles.
Peregrine says SPDT switch PE42750 is manufactured on Peregrine's
UltraCMOS technology and features high linearity and isolation
performance in both powered and unpowered states.
The PE42750 RF switch features isolation of 63dB at 1 GHz
(typ). Isolation levels are maintained in the unpowered
state in compliance with the FCC 15.115 standard for CATV-to-antenna
isolation. During unpowered operation, the ports are terminated
to prevent reflected signals between the terrestrial and
cable antennas. This high level of isolation is an important
feature to ensure high performance in consumer TV applications.
"The PE42750 provides a great solution for broadband
device manufacturers such as the cable set-top box,"
said Mark Schrepferman, marketing director for Peregrine's
HPS business unit. "Until now, manufacturers of these
types of products have used mechanical relays or multiple
solid-state switches in their designs for high-isolation
switching. The PE42750 is an elegant alternative that not
only meets the FCC isolation specification, it does so in
a solution that is smaller, more cost effective, more reliable,
and easier to implement in the design," he added.
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