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SiGe Semiconductor touts 'thinnest' Wi-Fi power amp

Posted: 17 Aug 2006 ?? ?Print Version ?Bookmark and Share

Keywords:SiGe? RangeCharger? SE2523BU? power amplifier? Wi-Fi?

SiGe's thin Wi-Fi power amp

SiGe Semiconductor Inc. has announced the RangeCharger SE2523BU, claimed to be the world's thinnest power amplifier for Wi-Fi systems. The company said the new device delivers industry-leading performance and power efficiency in a new paper-thin package with a profile of 0.5mm. The ultrathin design also reduces power consumption by 25 percent, SiGe said, making the device suitable for embedding Wi-Fi capability into portable, battery-powered consumer electronics.

"Wi-Fi technology has gained widespread consumer acceptance, and now users expect the convenience of wireless to go beyond their laptop computer," said Andrew Parolin, director of wireless data products, SiGe Semiconductor. "With our new power amplifier, SiGe is enabling manufacturers to embed Wi-Fi in a host of new applications while still meeting requirements for shrinking form factors, long battery life and low cost."

The SE2523BU is a 2.4GHz power amplifier that integrates digital enable circuitry, a power detector and biasing circuitry in a 16-pin 3-by-3-by-0.5mm QFN package. This device features 18.5dBm power output with EVM of 2.5 percent while operating in 802.11g mode. All ACPR requirements are met while operating at 23dBm output power in 802.11b mode.

The integrated power detector improves stability of wireless transmissions, the company said, since it is highly immune to mismatch: less than 1.5dB of variation with a 2:1 mismatch. The power detector offers two selectable power detector slopes, allowing it to be used with multiple chipsets. Also incorporated on chip is digital enable control circuitry, which eases design by allowing the device to be connected directly to a CMOS baseband or transceiver, SiGe explained.

Based on a silicon germanium architecture, the SE2523BU promises a low current draw of 130mA at 18.5dBm output power, operating from a single 3.3V supply. This is about 25 percent less than existing solutions, the company said. The combination of performance and power efficiency is suitable for battery-powered devices.

The SE2523BU is priced at 79 cents in 10,000-unit quantities.




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