Skyworks Solutions, Inc. " Phone [781] 376-3000 " Fax [781] 376-3100 " sales@skyworksinc.com " www.skyworksinc.com
200270J " Skyworks Proprietary Information " Products and Product Information are Subject to Change Without Notice " April 11, 2011
1
DATA SHEET
SKY12146-321LF: 3.0 3.8 GHz, 20 dB Variable Voltage
Attenuator
Applications
" WLANs
" WiMAX systems
Features
" Power control for 3.5 GHz fixed wireless applications
" Typical attenuation: 20 dB
" Control voltage:0 to 1.4 V
" Low cost
" No external components needed
" Small, QFN (12-pin, 3 x 3 mm) package (MSL1, 260 癈 per
JEDEC J-STD-020)
Figure 1. SKY12146-321LF Block Diagram
Description
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.
A functional block diagram is shown in Figure 1. The pin
configuration and package are shown in Figure 2. Signal pin
assignments and functional pin descriptions are provided in
Table 1.
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