ALM-2412
GPS LNA-Filter Front-End Module
Data Sheet
Attention: Observe precautions for
handling electrostatic sensitive devices.
For RF_IN (Pin 1): ESD Human Body Model = 3 kV
All other pins: ESD Machine Model = 40 V
ESD Human Body Model = 300 V
Refer to Avago Application Note A004R:
Electrostatic Discharge, Damage and Control.
Description
Avago Technologies’ ALM-2412 is an LNA module, with
integrated lter, designed for GPS band applications at
1.575GHz. The LNA uses Avago Technologies’ proprietary
GaAs Enhancement-mode pHEMT process to achieve high
gain with very low noise gure and high linearity. Noise
gure distribution is very tightly controlled. A CMOS-com-
patible shutdown pin is included either for turning the
LNA on/o , or for current adjustment. The integrated lter
utilizes an Avago Technologies’ leading-edge FBAR lter
for exceptional rejection at Cell/PCS-Band frequencies.
The ALM-2412 is useable down to 1V operation. It achieves
low noise gure, high gain and linearity even at 1V, making
it suitable for use in critical low-power GPS applications or
during low-battery situations.
Component Image
Surface Mount 3.3x2.1x1.1 mm
3
12-lead MCOB
Features
Very Low Noise Figure : 0.85 dB typical
High Gain : 13.5 dB typical
High IIP3 and IP1dB
Exceptional Cell/PCS-Band rejection
Advanced GaAs E-pHEMT Technology
Low external component count
Wide Supply Voltage : 1V to 3.6V
Shutdown current : < 0.1uA
CMOS compatible shutdown pin (SD) current @ 2.8V :
0.1mA
Adjustable current via single external resistor/voltage
Meets MSL3, Lead-Free and Halogen-Free
ESD-protected RF input: 3kV HBM
Small package dimension: 3.3(L)x2.1(W)x1.1(H) mm
3
Speci cations (Typical performance at 25°C)
At 1.575GHz, Vdd = 2.85V, Idd = 9.0mA
Gain = 13.5 dB
NF = 0.85 dB
IIP3 = +6.1 dBm, IP1dB = +2.2 dBm
S11 = -8.4 dB, S22 =-9.0 dB
Cell-Band Rejection: 53dBc
PCS-Band Rejection: 65dBc
At 1.575GHz, 1.0V supply
S21 = 7.2dB
NF = 1.63dB
Idd = 1.5mA
Application
GPS Band LNA
Note:
Package marking provides orientation and identi cation
“2412” = Product Code
First “X” = Year of manufacture
Second “X” = Work week of manufacture
Third “X” = Datecode
Fourth & Fifth “X” = Lot Number
TOP VIEW
BOTTOM VIEW
RF_IN 1
Gnd 2
SD 3
9 Gnd
8 FILTER-OUT
7 Gnd
Gnd 9
FILTER-OUT 8
Gnd 7
1 RF_IN
2 Gnd
3 SD
Gnd 4
Gnd 5
Gnd 6
12 VDD
11 Gnd
10 Gnd
Gnd 6
Gnd 5
Gnd 4
10 Gnd
11 Gnd
12 VDD
2412
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