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ALM-1612-BLKG

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P17
ALM-1612
GPS LNA-Filter Front-End Module
Data Sheet
Description
Avago Technologies’ ALM-1612 is a GPS front-end module
that combines a low-noise ampli er (LNA) with a GPS FBAR
lter. 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-compat-
ible 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 low noise  gure and high gain, coupled with low
current consumption make it suitable for use in critical low-
power GPS applications or during low-battery situations.
Component Image
Surface Mount 3.3x2.1x1 mm
3
12-lead MCOB
Features
Very Low Noise Figure: 0.95 dB typ.
High Gain: 18.2 dB typ.
High IIP3 and IP1dB
Exceptional Cell/PCS-Band rejection
Advanced GaAs E-pHEMT & FBAR Technology
Low external component count
Shutdown current: < 5 uA
CMOS compatible shutdown pin (SD) current @ 2.7 V:
0.1mA
ESD: For RFin (Pin 3): ESD Human Body Model > 3kV;
All other pins: ESD Machine Model = 70V, ESD Human
Body Model = 300V
Meets MSL3
Useable down to 1.8V supply
Adjustable current via single external resistor/voltage
Small package dimension: 3.3(L)x2.1(W)x1(H) mm3
Speci cations (Typical performance @ 25°C)
At 1.575GHz, Vdd = 2.7V, Idd = 6.0mA
Gain = 18.2 dB
NF = 0.95 dB
IIP3 = +2 dBm, IP1dB = -8 dBm
S11 = -9 dB, S22 = -14 dB
Cell-Band Rejection: 69 dBc
PCS-Band Rejection: 67 dBc
Application
GPS Receiver Front-end Module
Note:
Package marking provides orientation and identi cation
“1612” = Product Code
“YY” = Year of manufacture
“WW” = Work week of manufacture
Application Circuit
BOTTOM VIEWTOP VIEW
WWYY
1612
SD (1)
Gnd (2)
RFin (3)
Gnd (4)
Gnd (5)
Gnd (6)
Gnd (9)
RFOut (8)
Gnd (7)
Vdd (12)
Gnd (11)
Gnd (10)
SD (1)
Gnd (2)
RFin (3)
Gnd (4)
Gnd (5)
Gnd (6)
Gnd (9)
RFOut (8)
Gnd (7)
Vdd (12)
Gnd (11)
Gnd (10)
GPS
Filter
LNA
RFoutRFin
Vbias
+Vdd = 2.7V
Rbias
2
Absolute Maximum Rating
[1]
T
A
= 25°C
Symbol Parameter Units Absolute Max.
Vdd Device Drain to Source Voltage
[2]
V 3.6
Idd Drain Current
[2]
mA 15
P
in,max
CW RF Input Power
(Vdd = 2.7V, Idd = 6mA)
dBm 13
P
diss
Total Power Dissipation
[4]
mW 54
T
L
Operating Temperature °C -40 to 85
T
j
Junction Temperature °C 150
T
STG
Storage Temperature °C -65 to 150
Thermal Resistance[3]
(Vdd = 2.7 V, Idd = 6mA), Θjc = 133.3°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 7.5 mW/°C for Tb > 142°C.
Electrical Speci cations
T
A
= 25°C, DC bias for RF parameters is as speci ed below. Freq=1.575GHz – Typical Performance
[7]
Table 1a. Performance table under nominal operating conditions (Vdd = Vsd 2.7V, Idd = 6mA, R2 = 3.9 kOhm)
Symbol Parameter and Test Condition Units Min. Typ. Max.
G Gain dB 16.5 18.2 -
NF Noise Figure dB - 0.95 1.25
IP1dB Input 1dB Compressed Power dBm - -8 -
IIP3
[2]
Input 3rd Order Intercept Point
(2-tone @ Fc +/- 2.5MHz)
dBm - +2 -
S11 Input Return Loss dB - -9 -
S22 Output Return Loss dB - -14 -
S12 Reverse Isolation dB - -27 -
Cell Band Rejection Relative to 1.575GHz @ 827.5MHz dBc 50 69 -
PCS Band Rejection Relative to 1.575GHz @ 1885MHz dBc 50 67 -
IP1dB
1885MHz
Input 1dB gain compression interferer signal level at 1885MHz dBm -8.0
IP1dB
890MHz
Input 1dB gain compression interferer signal level at 890MHz dBm +1.0
Idd Supply DC current at Shutdown (SD) voltage Vsd=2.7V mA - 6 11.5
Ish Shutdown Current @ VSD = 0V uA - 0.5 -
3
Table 1b. Performance table at low voltage operation (Vdd = Vsd 1.8V, Idd = 4mA, R2 = 3.9 kOhm)
Symbol Parameter and Test Condition Units Typ.
G Gain dB 16.1
NF Noise Figure dB 1.05
IP1dB Input 1dB Compressed Power dBm -8.5
IIP3
[8]
Input 3rd Order Intercept Point (2-tone @ Fc +/- 2.5MHz) dBm 0
S11 Input Return Loss dB -7.2
S22 Output Return Loss dB -14.5
S12 Reverse Isolation dB -28
Cell Band Rejection Relative to 1.575GHz @ 827.5MHz dBc 68
PCS Band Rejection Relative to 1.575GHz @ 1885MHz dBc 67
IP1dB
1885MHz
Input 1dB gain compression interferer signal level at 1885MHz dBm -5.0
IP1dB
890MHz
Input 1dB gain compression interferer signal level at 890MHz dBm 0
Idd Supply DC current at Shutdown (SD) voltage Vsd=1.8V mA 4
Ish Shutdown Current @ VSD = 0V uA 0.5
Notes:
7. Measurements at 1.575GHz obtained using demo board described in Figures 6 and 7
8. 1.575GHz IIP3 test condition: F
RF1
= 1572.5 MHz, F
RF2
= 1577.5 MHz with input power of -20dBm per tone measured at the worst case side band
Circuit Symbol Size Description
L1 0402 22 nH Inductor (Taiyo Yuden HK100522NJ-T)
L2 0402 2.2 nH Inductor (Taiyo Yuden AQ1052N2S-T)
L3 0402 9.1 nH Inductor (Taiyo Yuden AQ1059N1J-T)
C1 0402 0.1 uF Capacitor (Murata GRM155F51C104ZA01E)
C2 0402 47 pF Capacitor (Murata GRM1555C1H470JZ01D)
C3 0402 330 pF Capacitor (Murata GRM1555C1H331JA01D)
R1 0402 10 Ohms Resistor (KOA RK73B1ETTB100J )
R2 0402 3.9 kOhm Resistor (KOA RK73B1ETTB392J)
Figure 1. Demoboard and application circuit components table
Pins pointing
out of the page
1
2
3
4
Pins 1, 4 = GND
Pin 2 = Vdd Supply
Pin 3 = Shutdown (SD)
DC Pin Configuration of 4-pin connector
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P17

ALM-1612-BLKG

Mfr. #:
Buy ALM-1612-BLKG
Manufacturer:
Broadcom / Avago
Description:
RF Front End GPS LNA with Filter
Lifecycle:
New from this manufacturer.
Delivery:
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