LX5553
TM ®
2.4-2.5 GHz Front-End Module with Internally Matched Power Amplifier, LNA & SP3T Switch
P RODUCTION D ATA S HEET
KEY FEATURES
DESCRIPTION
LX5553 is a high-integration, highperformance WLAN front-end module (FEM) for 802.11b/g/n and other applications in the 2.4-2.5GHz frequency range. LX5553 integrates an advanced InGaP/GaAs Heterojunction Bipolar Transistor (HBT) power amplifier with on chip impedance matching, a fully matched low noise amplifier based on InGaAs Enhancement mode pseudo-morphic high electron mobility transistor (EpHEMT) technology, and a Depletion mode pHEMT (D-pHEMT) singlepole triple-throw (SP3T) switch, all into a single package with 3x3mm footprint. LX5553 provides capability of sharing a single antenna between WLAN and Bluetooth systems through the SP3T switch. The Tx path of LX5553 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 (
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