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RF power amps designed for WLAN apps

Posted: 23 Jun 2011 ?? ?Print Version ?Bookmark and Share

Keywords:RF power? amplifier? WLAN?

Microchip Technology Inc. has introduced two additions to its family of RF power amplifiers. The SST12LP17E, which the company touts as the smallest fully matched power amp in its class, requires only one DC bypass capacitor to attain optimum performance. The SST12LP17E's matched input and output ports are easy to use and enable faster time-to-market, Microchip noted. The SST12LP18E, operating at -20 to 85C, is a lower-cost, lower-voltage substitute to the company's SST12LP14E power amp.

The devices demonstrate operating voltages as low as 2.7V, linear output power as high as 18.5dBm at 2.5 percent EVM using IEEE 802.11g OFDM 54Mbit/s, and 23.5dBm for IEEE 802.11b and a high power-added efficiency of up to 38 percent for IEEE 802.11b. They are suitable for embedded WLAN applications where small size, high efficiency and low-battery voltage operation are required, such as cellphones, game consoles, printers and tablets.

"With the release of these new power amps, Microchip can now offer customers the same reliable operation over temperature with even lower operating voltages," stated Daniel Chow, vice president of Microchip's radio frequency division. "Combined with high-efficiency operation, these low-operating-voltage devices extend the operating battery life for applications in the consumer electronics industry."

The RF power amps, offered at volume-production quantities, are available in an 8-pin 2 x 2 x 0.45mm QFN package. The SST12LP17E is priced at $0.48 each, in 10,000-unit quantities, while the SST12LP18E is at $0.29 each, in 10,000-unit quantities.

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