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Antenna tuning switch offers high linearity, low distortion

Posted: 21 Feb 2008 ?? ?Print Version ?Bookmark and Share

Keywords:antenna? tuning switch? high linearity?

Peregrine Semiconductor Corp. has released the UltraCMOS PE42641 SP4T antenna tuning switch. The company reports that the switch achieves industry-leading intermodulation distortion (IMD) performance of -110dBm, making it well suited for use in converged designs that require high linearity and low distortion. Applications include: 3G GSM/EDGE/W-CDMA and CDMA handset and PC card applications; machine-to-machine applications such as vending machines and parking meters; or designs requiring antenna tuning, such as repeater and telematics applications.

The monolithic silicon-on-sapphire based PE42641 incorporates Peregrine's HaRP technology enhancements to deliver linearity of +68dBm third-order intercept point (IP3), -110dBm IMD, harmonics of better than -80dBc, typical insertion loss of 0.5dB and isolation of 35dB at critical paths.

Additionally, the new switch offers Class 2 ESD (2kV HBM) on all pins, and Class 3 (4kV HBM) at the antenna, which Peregrine Semiconductor asserts is the highest ANT-pin ESD protection available today.

"As with the entire Peregrine portfolio, this SP4T is developed on UltraCMOS which is a standard CMOS technology. It leverages all the same low-cost, high-value benefits in manufacturing yields, scalability and ease-of-use, while delivering the unprecedented performance offered only with our proprietary sapphire substrate," commented Rodd Novak, VP of marketing and business development.

Peregrine's 50 PE42641 2.75V RF switch operates from 100MHz to 3,000MHz and features on-board CMOS logic, which facilitates 1.8V or 2.75V control; 4.5 series ON resistance; no blocking capacitors; and fast switch settling time. The device is available in the RoHS-compliant 3mm x 3mm x 0.75mm TQFN package and is priced at 91 cents in volume (100,000 units).

Peregrine Semiconductor is one of the exhibitors in the upcoming IIC-China 2008.

- Janine Love
RF Designline

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