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Peregrine launches SPDT switches for wireless applications

13 Sep 2013

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Peregrine Semiconductor has unveiled its PE42820 and PE42821 single-pole double throw (SPDT) switches, also called the PE42820/821, for high-power wireless applications. The company said the SPDT switches will allow for a new approach to RF switching in wireless systems and reduce board area, power consumption and design-in complexity compared to other solutions. The company's UltraCMOS technology allows for the combination of 30W power handling and linearity across the UHF/VHF through LTE frequency bands.

Peregrine's new switching ICs can replace 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, according to the company. The PE42820/821 switching ICs offer high 30W power handling while also allowing linearity across the entire 30MHz to 2.7GHz frequency range. This combination, enabled by Peregrine's UltraCMOS technology with HaRP enhancements, improves signal clarity and range in high-power RF systems.

Peregrine's approach integrates flexible control voltage ranges and eliminates the need for external bias control circuitry. This reduces the system bill of materials, which allows for saving on board space and current consumption, while simplifying design for a more reliable long-term solution.

"The increased complexity that comes from supporting additional frequency bands in high-power wireless applications necessitates a new approach to system design," said Mark Schrepferman, director of Peregrine's communications and industrial product line. "Discrete solutions utilising pin diodes and mechanical relays simply cannot support the required linearity from UHF/VHF through LTE operation while still meeting the size, cost and performance expectations of high-power wireless systems. Our monolithic approach offers a reliable solution to these challenges and provide customers with a route to future proofing their designs as they move to accommodate additional frequency bands."

In addition to high linearity (82dBm IIP3 @ 850MHz; 76dBm IIP3 @ 2.7GHz), the PE42820 and PE42821 switching ICs feature low insertion loss (0.35 from 30MHz-1GHz; 0.20 from 1-2GHz; and 0.80 from 2-2.7GHz), and an ESD of 1.5 kV HBM on all pins. The PE42820/1 high-power 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 6μs.

The PE42820/821 switches are supplied in RoHS compliant, 5 x 5 mm 32-lead QFN packages. Pricing for both devices starts at $11.69 in 10k-unit quantities. Samples and volume-production quantities can be obtained by contacting Peregrine.

Peregrine Semiconductor also said the PE42820/1 Evaluation Kits are now available through its global direct sales representatives and worldwide distribution partners.

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