169 to 170 MHz Transmit / Receive Front-End Module

The SKY66121-11 is a high-performance, transmit / receive (Tx / Rx) front-end module (FEM). The device includes a power amplifier (PA) capable of more than +30 dBm of transmit output power (VCC = 3.6 V).

All functionality can be controlled by a two-wire interface. The FEM can be placed in a deep “sleep” mode, drawing less than 1 μA of current.

The receive chain consists of a low-loss single-pole, double-throw (SPDT) switch. Three separate VCC pins enable maximum RF isolation.

The SKY66121-11 is packaged in a 16-pin, 4 x 4 mm Multi-Chip Module (MCM), which allows for a highly manufacturable low-cost solution.


Product LifecycleIn Production
RF Frequency (MHz)169-170
Rx Insertion Loss (dB) Typ.0.9
Rx Gain (dB) Typ.TBD
Tx Gain (dB)TBD
Rx NF (dB) Typ.TBD
Saturated Output Power (dBm) Typ.31
Supply Voltage (V)2.0-4.0
PackageMCM, 16-pin
Package (mm)4 x 4 x 0.76


  • Transmit output power: >+30 dBm
  • High efficiency PA
  • Receive loss with filter: 0.9 dB
  • Sleep mode current: < 1 μa
  • Integrated control logic
  • Small footprint MCM (16-pin, 4 x 4 mm) package (MSL3, 260 °C per JEDEC J-STD-020)

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