MGA-635T6
GPS Low Noise Ampli er with Variable Bias
Current and Shutdown Function
Data Sheet
Description
Avago Technologies’ MGA-635T6 is a LNA designed
for GPS/ISM/Wimax applications in the (0.9-2.4)GHz
frequency range. The LNA uses Avago Technologies’s
proprietary GaAs Enhancement-mode pHEMT process to
achieve high gain operation with very low noise gures
and high linearity. Noise gure distribution is very tightly
controlled. Gain and supply current are guaranteed pa-
rameters. A CMOS compatible shutdown pin is included
to turn the LNA o and provide a variable bias.
The MGA-635T6 LNA is useable down to 1V operation.
It achieves low noise gures and high gain even at 1V,
making it suitable for use in critical low power GPS/ISM
band applications.
Component Image
Surface Mount 2.0x1.3x0.4 mm
3
6-lead UTSLP
Features
Low Noise Figure : 0.74dB
High Gain : 14.5dB
High linearity and P1dB
GaAs E-pHEMT Technology
Low component count
Wide Supply Voltage : 1V to 3.6V
Shutdown current : < 0.1uA
CMOS compatible shutdown pin (VSD) current @
2.85V : 60uA
Adjustable bias current via one single external resis-
tor/voltage
Shutdown function
Small Footprint: 2 x 1.3mm
2
Low Pro le : 0.4 mm
Ext matching for non-GPS freq band operation
Speci cations
At 1.575GHz, 2.85V 6.3mA (Typ)
Gain = 14.5 dB (Typ)
NF = 0.74 dB (Typ)
IIP3 = 3.5 dBm (Typ)
IP1dB = 2.5 dBm (Typ)
S11 = -8 dB (Typ)
S22 = -10.4 dB (Typ)
At 1.575GHz, 2.85V 8mA (Typ)
Gain = 15.7 dB (Typ)
NF = 0.8 dB (Typ)
IIP3 = 3.5 dBm (Typ)
IP1dB = 1 dBm (Typ)
S11 = -11.8 dB (Typ)
S22 = -9.3 dB (Typ)
Applications
GPS, ISM & WiMax Bands LNA
Note:
Package marking provides orientation and identi cation
“3F” = Product Code
“Y” = Year of manufacture
“M” = Month of manufacture
Top View
.
3FYM
.
3FYM
Bottom View
Attention: Observe precautions for
handling electrostatic sensitive devices.
ESD Machine Model = 40 V
ESD Human Body Model = 250 V
Refer to Avago Technologies Application Note A004R:
Electrostatic Discharge, Damage and Control.