4.9-5.9 GHz SPDT Switch With Low-Noise Amplifier

The SKY85601-11 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 SKY85601-11 operates at 3.3 V and draws 15 mA of current. In the transmit mode, a shutdown function saves power when the device is inactive. The switch requires five external components.

The switch is manufactured in a compact, 2.5 x 2.5 mm, 16-pin Quad Flat No-Lead (QFN) package. The small footprint provides the industry’s smallest PCB area needed to implement an integrated broadband SPDT switch with LNA functionality.


Product LifecycleIn Production
Frequency (GHz) Min.4.9
Frequency (GHz) Max.5.9
Typ. Current @ VDD = 3.3 V 17.5dBm (mA)
Typ. Current @ VDD = 3.6 V 17.5dBm (mA)
Typ. Current @ VCC = 3.6 V (mA)
Typ. POUT @ 3.0% EVM (dBm)
Typ. Current @ VCC = 5 V (mA)
802.11 WLAN Standarda/n
Antenna Ports1
Architecture5 GHz RX Front End Module
Typ. POUT @ 2.5% EVM (dBm)
Typ. Tx Gain (dB)
Typ. POUT (dBm)
VCC (V)3.0-3.6
PackageQFN, 16-pin
Package (mm)2.5 x 2.5 x 0.45


  • Low Noise Figure: 2.5 dB
  • Frequency range: 4.9 to 5.9 GHz
  • High IIP3: +6 dBm
  • High gain: 12 dB
  • Bypass mode with –5 dB insertion loss
  • High transmit to receive isolation for high power applications
  • Small QFN (16-pin, 2.5 x 2.5 mm) package (MSL1, 260 °C per JEDEC J-STD-020)

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