RFX8422 is a CMOS-based, single-chip, single-die RFeIC (RF Front-end Integrated Circuit) that incorporates all key RF functionality needed for implementing a high-performance RF front-end solution for WLAN IEEE 802.11b/g/n operation in the 2.4GHz band. The RFX8422 architecture integrates a high-efficiency, high-linearity power amplifier (PA) with harmonic filter, a directional coupler based power detector, a low noise amplifier (LNA) with bypass mode, and an SP3T switch for Bluetooth antenna sharing. All the impedance matching components and DC-block capacitors are also integrated to minimize the PCB footprint for system implementation.
RFX8422 is assembled in an ultra-compact, low-profile 2.5x2.5x0.45mm 16L QFN package. It has simple and low-voltage CMOS control logic, and requires minimal external components. With support to direct battery operation, the RFX8422 is ideal RF front-end solution for implementing 2.4GHz WLAN in smartphones and many other mobile platforms.