Peregrine Semiconductor has announced the PE42440 SP4T (single pole four throw) RF switch. The PE42440, designed on Peregrine's green Ultra CMOS silicon-on-sapphire (SOS) process technology, features broadband RF performance from 50MHz up to 3GHz. The Harp-enhanced switch is said to have best-in-class linearity, making it suitable for general-purpose TRx switching in cellular and 2.4GHz industrial, scientific and medical (ISM) radio bands; antenna tuning; and filter-bank tuning/switching in a range of applications, including cellular radios and radio modules; antenna tuning of UHF bands through 3GHz; RFID antenna tuning; 2.4GHz ISM; Femtocells and other industrial applications.The reflective PE42440 switch delivers an IIP3 of +67dBm and P1dB of 41.5dBm (across the range); insertion loss of 0.45dB; and isolation of 34dB (at 1GHz). The 50Ohm switch handles maximum 33dBm input power (500MHz to 3GHz) with ESD tolerance of 4.0kV HBM on the RFC pin. Additional features include integrated CMOS control logic, decoder for two-pin control that accepts 1.8 and 2.75V control-logic levels, and a low 4.5Ohm series ON resistance.
A single Vdd supply pin eliminates the need for multiple power supplies and power-up sequencing. As with all SOS-based Ultra CMOS RFICs, the device settles fast without gate lag or insertion loss drift and no blocking capacitors are required.
