LX5543

LX5543 TM ® 2.4-2.5 GHz Front-End Module with Internally Matched Power Amplifier and SP3T Switch P RODUCTION D ATA S HEET KEY FEATURES DESCRIPTION LX5543 is a WLAN front-end module (FEM) for 802.11b/g/n and other applications in the 2.4-2.5GHz frequency range. LX5543 integrates an advanced InGaP/GaAs Heterojunction Bipolar Transistor (HBT) power amplifier with on chip impedance matching and a Depletion mode pHEMT (D-pHEMT) singlepole triple-throw (SP3T) switch in a single package with 3x3mm footprint. LX5543 provides capability of sharing a single antenna between WLAN and Bluetooth systems through the SP3T switch. The Tx path of LX5543 features a two-stage monolithic microwave integrated circuit (MMIC) power amplifier with active bias circuitry, on-chip output power detector, and 50 input/output matching inside the package. With 3.6V supply voltage and 82mA bias current, the Tx path provides about 25dB power gain, and +17dBm linear output power, with EVM (