Peregrine Semiconductor revealed the UltraCMOS PE42721 75 Ω RF switch for designers of digital TV (DTV) tuner modules, cable TV (CATV) signal switching and distribution systems, multi-tuner digital video recorders (DVRs) and set-top boxes.
The device is ideal for markets where broadband-TV devices must accommodate multiple RF inputs for cable, satellite and terrestrial reception while avoiding interference between these signals. To achieve this, it features isolation high enough that only this one tuner chip is needed in each device, which reduces the overall tuner footprint and cost of the system.
Peregrine’s switch also delivers enhanced linearity and electrostatic discharge (ESD) performance because it pairs the high isolation with low insertion loss, which improves the signal fidelity by reducing the signal-to-noise ratio.
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