BBA-322-A Datasheet, PDF (5/8 Pages) List of Unclassifed Manufacturers – GENERAL-PURPOSE BROADBAND RF AMPLIFIER DATA GUIDE

POWER SUPPLY CONSIDERATIONS
The user should insure a clean source of power for the amplifier module. In
cases where the supply contains excessive noise, a filter and bypass should be
placed on the supply line in close proximity to the module.
The power supply must be regulated to within the primary range specified or the
maximum current limited using an appropriate resistance in series with the
amplifier’s positive supply pin. Failure to observe the supply limits will irreparibly
damage the device. The resistor should be selected so that the device current is
limited to or less than the maximum rated current. The resistor value may be
easily selected using the following formula:
V_SUPPLY - V_{DEVICE TYP.}
R=
I_CC
Example:
BBA-519 @ 9 Volt Supply
9-5
R=
60x10^-3
= ^4÷.06 = ^66Ω
PAD LAYOUT
The pad layout shown below is designed to facilitate both hand and automated
assembly.
0.100"
BBA Pad Layout Pattern
(Not to Scale)
0.100"
0.310"
0.070"
BOARD LAYOUT
If you are at all familiar with RF devices you may be concerned about specialized
layout requirements. Hi-gain high-frequency amplifiers are notorious for layout
challenges. Thankfully, the BBA series is inherently very stable. By adhering to a
few simple design and layout rules you will enjoy a trouble-free implementation.
The module should be placed as close as possible to the transmitter or receiver
with which it is to be paired. A ground plane should be placed under the module,
usually on the backside of the PCB. RF traces to and from the amp should be
kept short and of the proper width to assure service as a 50Ω transmission line.
The module’s RF ports are AC-coupled and require no matching in a 50Ω
system.
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