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 3 V Supply
• Unconditionally Stable
Surface Mount Package
SOT-363 (SC-70)
Description
Agilent’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
+3 V supply, while resistive
feedback ensures stability (K > 1)
over frequency and temperature.
Pin Connections and
Package Marking
GND
GND
INPUT
1
2
3
6
5
4
OUTPUT
and V
d
GND
R
bias
Applications
• Amplifier for Cellular, PCS,
and Wireless LAN
Applications
Note:
Package marking provides orientation
and identification; “x” is date code.
85x
Equivalent Circuit
(Simplified)
6
RF OUTPUT
and V
d
3
4
RF
INPUT
BIAS
GROUND
BIAS
R
bias
1, 2, 5
HP [ AGILENT(HEWLETT-PACKARD) ]
