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ALM-2712 Datasheet Preview

ALM-2712 Datasheet

GPS Filter-LNA-Filter Front-End Module

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ALM-2712
GPS Filter-LNA-Filter Front-End Module
Data Sheet
Description
Avago Technologies’ ALM-2712 is an ultra low-noise GPS
front-end module that combines a low-noise amplifier
(LNA) with GPS FBAR filters. The LNA uses Avago Tech-
nologies’ proprietary GaAs Enhancement-mode pHEMT
process to achieve high gain with very low noise figure
and high linearity. Noise figure distribution is very tightly
controlled. A CMOS-compatible shutdown pin is included
either for turning the LNA on/off, or for current adjust-
ment. The integrated filter utilizes an Avago Technologies’
leading-edge FBAR filter for exceptional rejection at
Cellular, DCS, PCS and WLAN band frequencies. Bypass
functionality with an external RF switch is possible with
separate RF switching.
The low noise figure and high gain, coupled with low cur-
rent consumption make it suitable for use in critical low-
power GPS applications or during low-battery situations.
Component Image
Surface Mount (3.0 x 2.5 x 1) mm3 12-lead MCOB
Gnd Vsd Gnd
(pin 12) (pin 11) (pin 10)
RF In (pin 1)
Vdd (pin 9)
Gnd (pin 2) 2712
RF Out (pin 8)
Gnd (pin 3)
YMXXXX
Gnd Gnd Gnd
(pin 4) (pin 5) (pin 6)
Gnd (pin 7)
TOP VIEW
Features
Very Low Noise Figure: 1.26 dB typ.
Exceptional Cell/DCS/PCS/WLAN-Band rejection
Advanced GaAs E-pHEMT & FBAR Technology
Low external component count.
CMOS compatible shutdown pin (SD)
ESD: > 3kV at RFin pin
Adjustable bias current via single external resistor/
voltage
Useable down to 1.8V supply voltage
Small package dimension: 3.0(L)x2.5(W)x1(H) mm3
Meets MSL3, Lead-free and halogen free
Specifications (Typical performance @ 25°C)
At 1.575GHz, Vdd = 2.7V, Idd = 7.5mA
Gain = 14.2 dB
NF = 1.26 dB
IIP3 = +5 dBm, IP1dB = +2 dBm
S11 = -9 dB, S22 =-12 dB
Low-Band Rejection (824 – 928MHz): 89 dBc
High-Band Rejection (1710 – 1980MHz): 80 dBc
WLAN-Band Rejection (2400 – 2500MHz): 72 dBc
Application
GPS Front-end Module
Application Circuit
Vdd = +2.7V
Vdd (pin 9)
Gnd Vsd Gnd
(pin 10) (pin 11) (pin 12)
RF In (pin 1)
RF Out (pin 8)
Gnd (pin 2)
Vsd C1 C2
RFin RFout
Gnd (pin 7)
Gnd Gnd Gnd
(pin 6) (pin 5) (pin 4)
Gnd (pin 3)
BOTTOM VIEW
Note:
Package marking provides orientation and identification
“2712” = Product Code
“Y” = Year of manufacture
“M” = Month of manufacture
“XXXX” = Last 4 digit of lot number
Attention: Observe precautions for
handling electrostatic sensitive devices.
RF In (Pin 1) to GND: ESD Human Body Model = 3 kV
All other Pins : ESD Machine Model = 50 V
: ESD Human Body Model = 300 V
Refer to Avago Application Note A004R:
Electrostatic Discharge, Damage and Control.




AVAGO

ALM-2712 Datasheet Preview

ALM-2712 Datasheet

GPS Filter-LNA-Filter Front-End Module

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Absolute Maximum Rating[1] TA=25°C
Symbol
Vdd
Idd
Pin,max
Pdiss
Tj
TSTG
Parameter
Device Drain to Source Voltage[2]
Drain Current[2]
CW RF Input Power (Vdd = 2.7V, Idd = 7.5mA)
Total Power Dissipation[4]
Junction Temperature
Storage Temperature
Units
V
mA
dBm
mW
°C
°C
Absolute
Max.
3.6
20
15
72
150
-65 to 150
Thermal Resistance [3]
(Vdd = 2.7V, Idd = 7.5mA), jc = 92°C/W
Notes:
1. Operation of this device in excess of any of
these limits may cause permanent damage.
2. Assuming DC quiescent conditions.
3. Thermal resistance measured using Infra-Red
measurement technique.
4. Board (module belly) temperature TB is 25°C.
Derate 10.87 mW/°C for TB>143°C.
Electrical Specifications
TA = 25°C, Freq = 1.575GHz, measured on demo board[1] unless otherwise specified – Typical Performance[1]
Table 1. Performance at Vdd = Vsd = 2.7V, Idd = 7.5mA (Rbias = 6.8k Ohm) nominal operating conditions
Symbol
Parameter and Test Condition
Units Min.
Typ
Max.
G Gain
dB 12 14.2 16.3
NF[2]
Noise Figure
dB –
1.26 1.7
IP1dB
Input 1dB Compressed Power
dBm –
+2 –
IIP3[3]
Input 3rd Order Intercept Point (2-tone @ Fc +/- 2.5MHz) dBm
0
+5 –
S11 Input Return Loss
dB –
-9 –
S22 Output Return Loss
dB –
-12 –
S12 Reverse Isolation
dB –
-22 –
Low Band Rejection
Worst-case relative to 1.575GHz within
(827-928)MHz band, tested at 928MHz
dBc 79 89 –
High Band Rejection
Worst-case relative to 1.575GHz within
(1710-1980)MHz band, tested at 1850MHz
dBc 74 80 –
WLAN Band Rejection Worst-case relative to 1.575GHz within
(2400-2500)MHz band, tested at 2500MHz
dBc 67 72 –
IP1dB890MHz
Input 1dB gain compression interferer signal level at
890MHz
dBm –
21 –
IP1dB1710MHz
Input 1dB gain compression interferer signal level at
1710MHz
dBm –
32 –
IP1dB1885MHz
Input 1dB gain compression interferer signal level at
1885MHz
dBm –
37 –
IP1dB2500MHz
Input 1dB gain compression interferer signal level at
2500MHz
dBm –
35 -
OOB IIP3[4]
Out of Band Input 3rd Order Intercept Point
(2-tone @ 1712.7 MHz and 1850MHz)
dBm –
62 –
Idd
Supply DC current at Shutdown (SD) voltage Vsd = 2.7V mA
4
7.5 15
Ish Shutdown Current @ VSD = 0V
uA –
0.5 110
2


Part Number ALM-2712
Description GPS Filter-LNA-Filter Front-End Module
Maker AVAGO
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