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PRODUCT SUMMARY
SKY65405-21: 2.4 GHz Low-Noise Amplifier
Applications
? 802.11b,g,n PC cards, NICs, and USB dongles
? 802.11b,g,n tablets
? 802.11b,g,n access point, routers, and gateways
? 2.4 GHz ISM radios
Features
? Ultra -low Noise Figure: 1.1 dB
? 2.4 GHz to 2.5 GHz operation
? Enable/disable mode
? High IIP3: +9 dBm
? High gain: 15 dB
? 2.8 to 5.0 V single - supply operation
? D FN ( 6 - pin, 1.5 x 1.5 mm) package (MSL 1, 260 ° C per JEDEC
J- STD - 020)
Figure 1. SKY65405-21 LNA Block Diagram
Description
The SKY65405 - 21 is an ultra Low - Noise Amplifier (LNA) intended
for 2.4 GHz wireless receiver applications. Its industry - leading
Noise Figure (NF), together with high linearity, makes it ideal as a
first- stage LNA in 802.11b,g Wireless Local Area Network (WLAN)
radios.
Operating with a single supply voltage, the SKY65405 - 21
consumes only 1 2 mA of current. The device includes a shutdown
mode to save power when the receiver is inactive.
The tiny package footprint of the SKY65405 - 21 , requiring only
four external components, enables the industry’s smallest PCB
area needed to implement a 2.4 GHz LNA.
A block diagram of the SKY65405 - 21 is shown in Figure 1 .
Skyworks Solutions, Inc. ? Phone [781] 376 - 3000 ? Fax [781] 376 - 3100 ? sales@skyworksinc.com ? www.skyworksinc.com
201593A ? Skyworks Proprietary Information ? Products and Product Information Are Subject To Change Without Notice ? June 2, 2011
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