PHEMT* Low Noise Amplifier
with Bypass Switch
Technical Data
MGA-72543
figure into 50Ω. The input may be
additionally externally matched for
low VSWR through the addition of
a single series inductor. When set
into the bypass mode, both input
and output are internally matched
to 50Ω.
Surface Mount Package
SOT-343 (SC-70)
Features
• Lead-free Option Available
• Operating Frequency
0.1 GHz ~ 6.0 GHz
• Noise Figure:
1.4 dB at 2 GHz
• Gain: 14 dB at 2 GHz
The MGA-72543 offers an inte-
grated solution of LNA with
• Bypass Switch on Chip
Loss = -2.5 dB (Id < 5 µA)
IIP3 = +35 dBm
Pin Connections and
Package Marking
adjustable IIP3. The IIP3 can be
fixed to a desired current level for
the receiver’s linearity require-
ments. The LNA has a bypass
switch function, which sets the
current to zero and provides low
insertion loss. The bypass mode
also boosts dynamic range when
high level signal is being received.
3
1
INPUT
& V
ref
GND
• Adjustable Input IP3
+2 to +14 dBm
4
2
OUTPUT
& V
GND
• 2.7 V to 4.2 V Operation
d
• Very Small Surface Mount
Package marking is 3 characters. The
last character represents date code.
Package
Applications
• CDMA (IS-95, J-STD-008)
Receiver LNA
For the CDMA driver amplifier
applications, the MGA-72543
provides suitable gain and linearity
to meet the ACPR requirements
when the handset transmits the
highest power. When transmitting
lower power, the MGA-72543 can
be bypassed, saving the drawing
current.
Description
Agilent’s MGA-72543 is an economi-
cal, easy-to-use GaAs MMIC Low
Noise Amplifier (LNA), which is
designed for an adaptive CDMA
receiver LNA and adaptive CDMA
transmit driver amplifier.
Transmit Driver Amp
• TDMA (IS-136) Handsets
Attention:
Observe precautions for
handling electrostatic
sensitive devices.
The MGA-72543 features a mini-
mum noise figure of 1.4 dB and
14 dB associated gain from a single
stage, feedback FET amplifier. The
output is internally matched to
50Ω. The input is optimally
The MGA-72543 is a GaAs MMIC,
processed on Agilent’s cost effec-
tive PHEMT (Pseudomorphic High
Electron Mobility Transistor). It is
housed in the SOT343 (SC70 4-lead)
package, and is part of the Agilent
Technologies CDMAdvantage RF
chipset.
ESD Machine Model (Class A)
ESD Human Body Model (Class 0)
Refer to Agilent Application Note A004R:
Electrostatic Discharge Damage and Control.
internally matched for lowest noise
* Pseudomorphic High
Electron Mobility Transistor