Avago’s MGA-87563 is an economical, easy-to-use GaAs
MMIC amplifier that offers low noise and excellent
gain for applications from 0.5 to 4 GHz. Packaged in an
ultra-miniature SOT-363 package, it requires half the
board space of a SOT-143 package.
With the addition of a simple shunt-series inductor at
the input, the device is easily matched to achieve a
noise of 1.6 dB at 2.4 GHz. For 2.4 GHz applications and
above, the output is well matched to 50 Ohms. Below
2 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 +3 V or +5 V
power supply. Current consumption is only 4.5 mA,
making this part ideal for battery powered designs.