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Avago’s MGA-86563 is an economical, easy-to-use GaAs
MMIC amplifier that offers low noise figure and
excellent gain for applications from 0.5 to 6 GHz.
Packaged in an ultra-miniature SOT-363 package, it
requires half the board space of the SOT-143.
The MGA-86563 may be used without impedance
matching as a high performance 2 dB NF gain block.
Alternatively, with the addition of a simple shunt-
series inductor at the input, the device noise figure can
be reduced to 1.6 dB at 2.4 GHz. For 1.5 GHz applications
and above, the output is well matched to 50 Ω. Below
1.5 GHz, gain can be increased by using conjugate
matching.
The circuit uses state-of-the-art PHEMT technology
with self-biasing current sources, a source-follower
interstage, resistive feedback, and on-chip impedance
matching networks. A patented, on-chip active bias
circuit allows operation from a single +5 V power
supply. Current consumption is only 14 mA, making
this part suitable for battery powered applications.