MGA-72543 Datasheet, PDF (1/21 Pages) Agilent(Hewlett-Packard) – PHEMT Low Noise Amplifier with Bypass Switch

MGA-72543
PHEMT* Low Noise Amplifier with Bypass Switch
Data Sheet
Description
Avago’s MGA-72543 is an economical, easy-to-use GaAs
MMIC Low Noise Amplifier (LNA),which is designed for an
adaptive CDMA receiver LNA and adaptive CDMA transmit
driver amplifier.
The MGA-72543 features a minimum 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 internally matched for lowest noise
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.
The MGA-72543 offers an integrated solution of LNA with
adjustable IIP₃. The IIP₃ can be fixed to a desired current
level for the receiver’s linearity requirements. 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.
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.
The MGA-72543 is a GaAs MMIC, processed on Avago’s
cost effective PHEMT (Pseudomorphic High Electron Mo-
bility Transistor). It is housed in the SOT343 (SC70 4-lead)
package, and is part of the Avago Technologies CDMAd-
vantage RF chipset.
Attention: Observe precautions for
handling electrostatic sensitive devices.
ESD Machine Model (Class A)
ESD Human Body Model (Class 0)
Refer to Avago Application Note A004R:
Electrostatic Discharge Damage and Control.
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
 Bypass Switch on Chip Loss = -2.5 dB (Id <5 μA)
IIP3 = +35 dBm
 Adjustable Input IP3: +2 to +14 dBm
 2.7 V to 4.2 V Operation
 Very Small Surface Mount Package
Applications
 CDMA (IS-95, J-STD-008) Receiver LNA Transmit
Driver Amp
 TDMA (IS-136)Handsets
Surface Mount Package
SOT-343 (SC-70)
Pin Connections and Package Marking
3
INPUT
& Vref
4
GND
1
GND
2
OUTPUT
& Vd
Package marking is 3 characters. The last
character represents date code.
*Pseudomorphic High Electron Mobility Transistor