3.0 – 3.8 GHz, 20 dB Variable Voltage Attenuator

Please note: SKY12146-321LF is being discontinued and is not recommended for new designs.

The SKY12146-321LF is a GaAs pHEMT variable voltage attenuator designed for WLAN and WiMAX applications. The device operates within 3.2 to 3.8 GHz and is ideal for low-cost applications such as 3.5 GHz fixed wireless LANs and WiMAX power control systems.

The SKY12146-321LF is provided in a 12-pin, 3 x 3 mm Quad Flat No-Lead (QFN) package.


Frequency (GHz) Min.3.0
Frequency (GHz) Max.3.8
Typ. Insertion Loss Range (dB)1.5-1.6
Description20 dB Single CTL
Attenuation Range (dB)32-20
IP3 > 0.5 GHz (dBm) Typ.20
PackageQFN, 12L
Package (mm)3 x 3 x 0.75


  • Power control for 3.5 GHz fixed wireless applications
  • Typical attenuation: 20 dB
  • Control voltage: 0–1.4 V
  • Low cost
  • No external components needed
  • Small, QFN (12-pin, 3 x 3 mm) package (MSL1, 260 °C per JEDEC J-STD-020)

Product Documents