Absorptive high-isolation SPDT switch

December 12, 2012 // By Jean-Pierre Joosting
The RFSW6124 is an SPDT RF switch featuring a symmetric design for exceptional isolation. Typical applications for this GaAs pHEMT switch include cellular base stations and other communications systems requiring high linearity and power-handling capability.

The RFSW6124 uses a non-reflective architecture that terminates ports in the Off state and provides an enable pin for an All-Off state. Control of the switch is both 3 V and 5 V positive logic-compatible.

The device operates over 50 MHz to 6000 MHz, exhibits 70 dB isolation at 2 GHz and has a high IIP3 of 58 dBm at 5 V. Applications include cellular, 3G, LTE infrastructure, wireless backhaul, high performance communications systems, and test equipment.