MASW-000834-000SMB MA-COM [M/A-COM Technology Solutions, Inc.], MASW-000834-000SMB Datasheet

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MASW-000834-000SMB

Manufacturer Part Number
MASW-000834-000SMB
Description
Application Note on Sample Board Operation of the MASW-000834-13560T T/R Switch
Manufacturer
MA-COM [M/A-COM Technology Solutions, Inc.]
Datasheet
MASW-000834-000SMB Sample Board
M/A-COM Inc. and its affiliates reserve the right to make changes to the product(s) or information
contained herein without notice. M/A-COM makes no warranty, representation or guarantee
regarding the suitability of its products for any particular purpose, nor does M/A-COM assume any
liability whatsoever arising out of the use or application of any product(s) or information.
1
Application Note on Sample Board Operation of the
MASW-000834-13560T T/R Switch
The following is an application guide for utiliza-
tion of the MASW-000834-13560T in conjunc-
tion with a supplied sample board from M/
ACOM. The guide will review the operation of
the T/R using a single positive supply as well as
other optional dual polarity supplies.
The MASW-000834-13560T is a T/R switch
with two PIN diodes in series in a common an-
ode configuration and one PIN diode in shunt on
the Rx path. The switch die along with select
matching components are mounted in a standard
4mm MLP 16 lead package (Figure 1). The
switch die utilizes
HMIC process. The backside of the switch die
is thermally grounded while electrically iso-
lated. The excellent power handling of the die is
achieved through specific techniques using
unique thermal conductive epoxy embedded in
the die. This allows the heat to be transferred
from the series connected device to ground
while maintaining electrical isolation. The large
backside of the pad of the package is both
thermal and electrical ground. Figure 2 shows
the electrical/ thermal schematic of the device.
The sample board is made of Rogers RO4350
material 10mils thick dielectric with added lay-
ers to increase the board thickness to 62mils for
handling, rigidity and connector mounting.
There are on-board bias networks incorporated
to accommodate biasing the device without the
use of expensive external bias tees. Figure 3
shows the standard board layout with compo-
nent selection for optimized performance up to 6
GHz.
M/ACOM’s patented
Figure 2. Electrical/Thermal Schematic
• North America Tel: 800.366.2266 / Fax: 978.366.2266
• Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300
• Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298
Visit www.macom.com for additional data sheets and product information.
Figure 1. Package Outline Drawing
M/A-COM Products
REV.3

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MASW-000834-000SMB Summary of contents

Page 1

... MASW-000834-000SMB Sample Board Application Note on Sample Board Operation of the MASW-000834-13560T T/R Switch The following is an application guide for utiliza- tion of the MASW-000834-13560T in conjunc- tion with a supplied sample board from M/ ACOM. The guide will review the operation of the T/R using a single positive supply as well as other optional dual polarity supplies ...

Page 2

... MASW-000834-000SMB Sample Board Application Note on Sample Board Operation of the MASW-000834-13560T T/R Switch C2 The diagram in Figure schematic depiction of the Figure 3 sample board drawing. There are 100 Ohm resistors on the ANT path and the DC2 path. This topology allows for either an all-positive bias scheme or a positive and negative bias scheme ...

Page 3

... MASW-000834-000SMB Sample Board Application Note on Sample Board Operation of the MASW-000834-13560T T/R Switch To accommodate biasing with a single positive supply, DC voltage must be applied to the Antenna, RX, TX, and DC2 ports. The resistor on the Antenna path will limit the current drawn when this volt- age is applied. The resistor present on the DC2 bias path limits the current when the RX shunt diode is turned on ...

Page 4

... MASW-000834-000SMB Sample Board Application Note on Sample Board Operation of the MASW-000834-13560T T/R Switch Dual Positive and Negative Voltage The sample board can accommodate dual polarity supplies as shown in Figures 8 through 10. In this scheme, bias is applied to the Rx , Tx, and DC2 path. Unlike the single positive polarity bias scheme, bias to the ANT port is not used ...

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