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Power amps reduce cost of Wi-Fi implementations

Posted: 20 Nov 2007 ?? ?Print Version ?Bookmark and Share

Keywords:RF power amplifiers? Wi-Fi? power detector?

SiGe Semiconductor Inc. has released two power amplifiers that are designed to provide manufacturers with the lowest cost route to developing Wi-Fi systems. The SE2537L and SE2581L power amplifiers aim to simplify development and reduce cost of discrete Wi-Fi implementations in client access applications including laptop computers, gaming systems, small office and home-based access points.

When used in combination, the power amplifiers can reduce the system BOMs by as much as 30 percent compared to current solutions.

The SE2537L is a 5GHz power amplifier and the SE2581L is a 2.4GHz power amplifier. The combined solution of SE2537L and SE2581L integrates a digital interface that simplifies board design by eliminating the need for analog reference voltages. The integrated power detector in the SE2581L offers an input port for a coupled signal from the 5GHz output line, offering a single detector output for both bands. The company reports that this is an industry first for discrete solutions. This feature removes the need for an external coupler.

Systems based on the SE2537L and SE2581L will be capable of 20dBm in 2.5GHz and 19.5dBm at 5GHz. The SE2581L, which is a feature-enhanced version of SiGe's widely used SE2527L, also includes an integrated power detector with 20dB of dynamic range. The SE2537L and SE2581L are sampling now. As a pair these devices are priced at $1.50 in 10,000 unit quantities.

- Janine Love
RF Designline

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