SiGe Semiconductor has released the SE2568U – an 802.11 b/g WLAN power amplifier (PA) that connects directly to baseband. SiGe claims that the SE2568U is the industry's smallest footprint PA for embedded WLAN functionality so far. Delivering +18dBm output power at 3% error vector magnitude (EVM) whilst drawing just 120mA, it integrates a fully-matched PA, power detector, 3.2GHz LO filter and harmonic filter in a QFN package.
Designed for use in portable embedded and modular integration applications such as mobile phones, the SE2568U PA features direct battery operation from +2.7 to +4.8V, without the need for on-board voltage regulation. The new device is CMOS compatible, so it enables direct logic connections to the baseband function, eliminating the need for external switching circuitry.
Notes Sanjiv Shah, director, product marketing WiMAX, & embedded WLAN: “Current solutions require up to 15 external components for matching and filtering to get equivalent performance, but the SE2568U PA requires only three external capacitors.”
The SE2568U PA is already sampling, and applications documentation and evaluation boards are available. A data sheet can be requested here