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3-volt, Low Noise Amplifier
for 0.8–6 GHz Applications
Technical Data
MGA-85563
Features
• 1.6 dB minimum Noise
Figure at 1.9 GHz
• Adjustable IP3 from
+12 dBm to +17 dBm via
External Resistor
• 18 dB Gain at 1.9 GHz
• Single 3V Supply
• Unconditionally Stable
Applications
• Amplifier for Cellular, PCS,
and Wireless LAN
Applications
Surface Mount Package
SOT-363 (SC-70)
Pin Connections and
Package Marking
Equivalent Circuit
(Simplified)
Note:
Package marking provides orientation
and identification; “x” is date code.
Description
Hewlett-Packard’s MGA-85563 is
an easy-to-use GaAs RFIC
amplifier that offers low noise
figure and high gain from 0.8 to
6 GHz. Packaged in an ultra-
miniature SOT-363 package, it
requires half the board space of a
SOT-143 package.
The MGA-85563 features a
minimum noise figure of 1.6 dB
and associated gain of 18 dB at
1.9 GHz. The output is matched
internally to 50 Ω, and the input is
partially matched, requiring only
a single external inductor for
optimal performance. The supply
current can be adjusted using an
external resistor, varying IP3
from +12 dBm to +17 dBm.
The circuit uses state-of-the-art
PHEMT technology with proven
reliability. On-chip bias circuitry
allows operation from a single
+3V supply, while resistive
feedback ensures stability (K > 1)
over frequency and temperature.
R
bias
GND
85x
INPUT
GND
GND
OUTPUT
and V
d
16
25
34
RF OUTPUT
and V
d
6
4
3
1, 2, 5
R
bias
BIAS
RF
INPUT
GROUND
BIAS
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