Skyworks Low Noise Amplifiers, Transistors and Drivers
ADC
LNA
Rx
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LNA
IF AGC
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Receive Digital
Baseband Out
Transmit
Typical Receiver Block Diagram
Skyworks’ new Low Noise Amplifier (LNA) products meet the
demanding ultra low noise figure and high linearity needs of
today’s receiver designs. Fabricated from Skyworks’ advanced
pseudomorphic high electron mobility transistor (pHEMT),
silicon germanium (SiGe), and Heterojunction Bipolar Transistor
(HBT) processes, these amplifiers have the flexibility to achieve
the necessary gain and linearity specifications. The LNA
product lineup features a family of two-stage cascaded LNAs,
discrete packaged transistors, and high linearity low noise
driver amplifiers.
The SKY65048-360LF, SKY65049-360LF, and SKY65066-360LF
complete the family of two-stage LNAs operating over the
0.7–1.2 GHz, 1.7–2.4 GHz, and 2.3–2.7 GHz frequency
bands. The devices integrate the interstage matching
network on die to reduce the number external components
required. The recommended schematics supplied by Skyworks
provides unconditional stability up to 18 GHz and >18 dB
return loss while maintaining 0.7 dB noise figure. The same
layout is used for all devices, simplifying design for all
available frequency bands.
Skyworks’ discrete packaged transistors have the flexibility to be
used in numerous low noise applications. The SKY65050-372LF and
SKY65052-377LF are 200 µm pHEMTs designed for low power
applications operating with a bias as low as 2 V, 5 mA. The
SKY65052-372LF and SKY65051-377LF are 400 µm pHEMTs
designed for high linearity, low noise applications. Skyworks
offers recommended matching networks for unconditional
stability up to 18 GHz and the design tools necessary to easily
design custom matching networks.
Skyworks’ low noise driver amplifiers are ideal choices for
mid-stage amplification in receiver designs. The devices feature
flat gain response,
≤
2 dB noise figure, and high linearity
performance. Devices require minimal external components to
simply the design and lower overall cost.
For more information and our latest product offering (including
data sheets, application notes, and evaluation board) please visit
our Web site at
www.skyworksinc.com
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Frequency (GHz)
Figure 1. Unconditional Stability of SKY65066-360LF
Figure 2. Noise Figure of SKY65049-360LF
USA: 781-376-3000 • Asia: 886-2-2735 0399 Ext. 990 • Europe: 33 (0)1 4144366 • Email: sales@skyworksinc.com
Analog electronics
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