CMOS handles 30W RF switching in high-power wireless systems

September 12, 2013 // By Graham Prophet
Peregrine's UltraCMOS technology delivers a combination of 30W power handling and high linearity from the UHF/VHF bands to the LTE frequency bands

Peregrine Semiconductor's PE42820 and PE42821 single-pole double throw (SPDT) switches for high-power wireless applications combine high-power handling and linearity while offering an integrated approach that reduces board area, power consumption and design-in complexity.

PE42820/821 can be used for transmit/receive, filter bank and antenna band switching applications in high-power RF systems such as wireless infrastructure devices and land mobile radios for public safety and military environments.

Peregrine’s switching ICs are significant in replacing discrete solutions including traditional PIN diodes used in land mobile radios (LMR), and mechanical relays used in LTE-enabled small cells or distributed antenna systems. These discrete solutions cannot deliver both the high power handling and high linearity required for broadband frequency support as required for LMR and LTE convergence. The PE42820/821 switching ICs offer high 30W power handling while also enabling excellent linearity across the entire 30MHz to 2.7GHz frequency range.

The monolithic approach integrates flexible control voltage ranges, which eliminates the need for external bias control circuitry.

In addition to high linearity (82 dBm IIP3 @ 850 MHz; 76 dBm IIP3 @ 2.7 GHz), the PE42820 and PE42821 switching ICs feature low insertion loss (0.35 from 30 Mhz-1 GHz; 0.20 from 1-2 GHz; and 0.80 from 2-2.7 GHz), and ESD of 1.5 kV HBM on all pins. The switches operate with a supply range of 2.3V to 5.5V. The PE42821 is a feature and pin-compatible version of the PE42820 with a faster switching time of 6 μsec. PE42820/1 Evaluation Kits are available. In 5 x 5 mm 32-lead QFN packages, the parts cost from $11.69 (10,000).