15 June 2023
pSemi unveils high-isolation SP4T switches with broadband frequency up to 8GHz
Murata company pSemi Corp of San Diego, CA, USA – a fabless provider of radio-frequency integrated circuits (RFICs) based on silicon-on-insulator (SOI) – has unveiled its latest single-pole four-throw (SP4T) switches with broadband frequency coverage up to 8GHz. The PE42445 high-isolation 3mm x 3mm package and the PE42446 high-isolation 4mm x 4mm package switches deliver high linearity and what is claimed to be best-in-class isolation performance, essential in 5G base stations.
The new switches are said to integrate seamlessly into 4G and 5G base stations and mMIMO architecture, providing digital pre-distortion (DPD) feedback loops and transmitter monitoring signal paths to prevent interference and maintain signal integrity, given massive MIMO applications.
Due to their high reliability and extended operating temperature range, the new high-isolation SP4T switches can be used for a wide variety of applications, including DPD and VSWR monitoring, portable wireless radios, repeaters and E911 systems, and test and ATE equipment.
The new products offer “the highest broadband frequency coverage of up to 8GHz for the first time in a high-isolation SP4T switch,” claims Vikas Choudhary, VP of global sales, marketing & system engineering. “The new SP4T switches offer many advantages to customers building 5G base stations and mMIMO architecture – including the highest isolation performance and high linearity. Additionally, we are pleased to offer our customers a choice of the compact 3mm x 3mm or 4mm x 4mm form factor.”
Offered in a 20-lead (3mm x 3mm) LGA package and 24-lead (4mm x 4mm) LGA package, the PE42445 and PE42446 switches offer greater than 60dB isolation, preventing interference and maintaining signal integrity. They are built for extended operating temperatures ranging from –40°C to +125°C. Based on customer requirements for high-isolation SP4T switches, the new products are designed for applications ranging from DPD feedback loops to transmitter monitoring signal paths, with low insertion loss across the band, high linearity of 60dBm IIP3, and fast switching time of 250ns.
The PE42445/46 SP4T high-isolation sample switches are available now and are expected to be commercially available in fourth-quarter 2023.