mga-31189 Avago Technologies, mga-31189 Datasheet - Page 14

• Manufacturer Part Number: mga-31189
• Description: 70 To 500 Mhz Ampliier For If Applications Using The Avago Technologies Mga-31189 Ampliier
• Manufacturer: Avago Technologies

Phase Reference Plane
Figure 27. MGA-31189 phase reference plane
The positions of the reference planes used to specify the
S-parameters and noise parameters for the MGA-31189 are
shown in Figure 27. As seen in the illustration, the reference
planes are located at the point where the package leads
contact the TRL board (10-mils Rogers RO4350).
PCB Design and Layout Guidelines
Details about the recommended PCB land pattern, stencil
design and reflow profile for Avago’s SOT-89 devices can
be found in Application Note 5051 [2] .
For product information and a complete list of distributors, please go to our web site:
Avago, Avago Technologies, and the A logo are trademarks of Avago Technologies in the United States and other countries.
Data subject to change. Copyright © 2005-2010 Avago Technologies. All rights reserved.
AV02-2638EN - November 22, 2010
REFERENCE PLANES
www.avagotech.com
Conclusion
This application note clearly shows that the MGA-31189 is
well suit for narrowband IF applications, as demonstrated
by example designs that exhibited good performance
when tuned to IF frequencies. Proper input and output
matching will guarantee good return loss and linearity, as
well as good noise figure performance at IF frequencies.
Although this work covers only four IF frequencies (70
MHz, 170 MHz, 240 MHz and 500 MHz), the MGA-31189
can be tuned for other frequencies and applications within
the 50 MHz to 2 GHz frequency range with the techniques
discussed.
References
[1] “Characteristics of E-pHEMT vs. HBTs for PA Applica-
[2] “SOT89 Package”, Application Note 5051, Avago
[3] “MGA-53543”, Datasheet, Avago Technologies.
[4] “What’s All This Planar EM simulation Stuff Anyhow?”
tions, White Paper, Avago Technologies, March 2010.
Technologies
Murthy Upmaka, Agilent ADS Momentum Seminar,
2003.