SKY85610-11 SPDT Switch + LNA FEM Skyworks Solutions Inc. SKY85610-11 SPDT Switch + LNA Front End Module (FEM) is an integrated, single-pole, double-throw (SPDT) switch with a low-noise amplifier (LNA) intended for wireless applications. The device has a low noise figure (NF) with high linearity in the transmit mode. The SKY85610-11 can operate at 3.3V or 5V and draws 12mA of current. A shutdown function saves power in the transmit mode when the device is inactive. This device requires five external components.