The RF3858 from RF Micro Devices is an RF front end module (FEM) that supports multiple Tx/Rx applications in the 900 MHz ISM band, including smart energy/Advanced Metering Infrastructure (AMI). The highly integrated, single-chip device addresses the increasing requirements for aggressive size reductions in the RF front end designs for portable equipment.
The IC combines a 1 W, 915 MHz power amplifier capable of 31,5 dBm of output power, with a double-pole double-throw (DPDT) Tx/Rx transfer switch with low insertion loss and high isolation, a low noise amplifier (LNA) with bypass mode, and a Tx harmonic filter. The RF3858 is packaged in an 8 x 8 x 1,2 mm over-moulded laminate package with backside ground, minimising next level board space and allowing for simplified integration.
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