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PDF ALM-1812 Data sheet ( Hoja de datos )
| Número de pieza | ALM-1812 | |
| Descripción | GPS Filter-LNA-Filter Front-End Module | |
| Fabricantes | AVAGO | |
| Logotipo |  |
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ALM-1812
GPS Filter-LNA-Filter Front-End Module
Data Sheet
Description
Avago Technologies’ ALM-1812 is a GPS front-end module
that combines a high-gain low-noise amplifier (LNA) with
GPS FBAR filters. The LNA uses Avago Technologies’ pro-
prietary 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 adjustment. The
integrated filter utilizes an Avago Technologies’ leading-
edge FBAR filter for exceptional rejection at Cell/PCS-Band
frequencies.
The low noise figure 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 4.5 x 2.2 x 0.95 mm3 12-lead MCOB
NC (pin 1)
Gnd (pin 2)
RF in (pin 3)
Vsd NC
Vdd
(pin 12) (pin 11) (pin 10)
1812
YMXXXX
Gnd Gnd Gnd
(pin 4) (pin 5) (pin 6)
NC (pin 9)
RF Out (pin 8)
NC (pin 7)
NC (pin 9)
TOP VIEW
Vdd NC
Vsd
(pin 10) (pin 11) (pin 12)
NC (pin 1)
RF Out (pin 8)
Gnd (pin 2)
NC (pin 7)
Gnd
(pin 6)
Gnd
(pin 5)
Gnd
(pin 4)
RF in (pin 3)
BOTTOM VIEW
Note:
Package marking provides orientation and identification
“1812” = Product Code
“Y” = Year of manufacture
“M” = Month of manufacture
“XXXX”= Last 4 digit of lot number
Features
Very Low Noise Figure
Exceptional Cell/PCS-Band rejection
Low external component count
Fully-matched at RF input and RF output
Shutdown current: < 1 uA
CMOS compatible shutdown pin (SD)
ESD: > 3kV at RFin pin
4.5 x 2.2 x 0.95 mm3 size
Adjustable bias current via single
resistor/voltage
Lead-free, Halogen free and meets MSL3
Specifications (Typical performance @ 25°C)
At 1.575GHz, Vdd = 2.8V, Idd = 6.8mA
Gain = 19.1 dB
NF = 1.66 dB
IIP3 = +2 dBm, IP1dB = -8 dBm
S11 = -10 dB, S22 = -15 dB
Cell-Band Rejection: > 90dBc
PCS-Band Rejection: > 85dBc
Application
GPS Front-end Module
Application Circuit
external
+Vdd = 2.8V
VBias
RBias L
RFin RFout
1 page  
ALM-1812 Typical Performance Curves at 25°
40 10
20 5
00
-20 Cell band PCS band
-40 > 90 dBc > 85 dBc
-5
-10
-60 -15
-80
-100
-120
0
Gain (dB)
Input RL
Output RL
0.4 0.8 1.2 1.6 2 2.4 2.8 3.2 3.6
Freq (GHz)
-20
-25
-30
4
Figure 3a. Typical S-Parameter Plot @ Vdd = 2.8V, Idd = 6.8mA
40 10
20 5
00
-20 Cell band PCS band
-40 > 90 dBc > 85 dBc
-5
-10
-60 -15
-80
-100
-120
0
Gain (dB)
Input RL
Output RL
0.4 0.8 1.2 1.6 2 2.4 2.8 3.2 3.6
Freq (GHz)
-20
-25
-30
4
Figure 4a. Typical S-Parameter Plot @ Vdd = 1.8V, Idd = 4mA
20 10
00
-20 -10
-40 -20
-60 -30
Gain (dB)
-80 Input RL -40
Output RL
-100 -50
1.5 1.52 1.54 1.56 1.58 1.6 1.62 1.64
Freq (GHz)
Figure 3b. Passband response of typical S-Parameter Plot @ Vdd = 2.8V,
Idd = 6.8mA
20 10
00
-20 -10
-40 -20
-60 -30
Gain (dB)
-80 Input RL -40
Output RL
-100 -50
1.5 1.52 1.54 1.56 1.58 1.6 1.62 1.64
Freq (GHz)
Figure 4b. Passband response of typical S-Parameter Plot @ Vdd = 1.8V,
Idd = 4mA
5
5 Page 
ALM-1812 Typical Scattering Parameters at 25°C, Vdd = 1.8V, Idd = 4mA
Freq
(GHz)
0.05
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.8275
0.9
1.0
1.1
1.2
1.3
1.4
1.5
1.575
1.6
1.7
1.8
1.885
1.9
2.0
2.1
2.2
2.3
2.4
2.5
3.0
3.5
4.0
4.5
5.0
6.0
7.0
8.0
9.0
10.0
11.0
12.0
13.0
14.0
15.0
16.0
17.0
18.0
19.0
20.0
S11
Mag.
-0.37
-0.49
-0.62
-0.60
-0.57
-0.55
-0.52
-0.49
-0.47
-0.46
-0.46
-0.44
-0.44
-0.47
-0.51
-0.60
-2.07
-11.07
-1.03
-0.52
-0.57
-0.61
-0.62
-0.67
-0.72
-0.71
-0.70
-0.70
-0.70
-0.72
-0.69
-0.84
-1.08
-1.37
-3.23
-1.29
-1.58
-1.98
-2.39
-3.68
-4.41
-5.02
-3.16
-3.76
-5.59
-10.67
-4.41
-5.90
-3.26
S11
Ang.
167.91
157.48
137.11
118.84
102.07
86.79
72.98
60.16
48.32
45.21
37.27
26.28
16.08
6.22
-3.92
-16.42
-39.34
-146.67
57.61
-13.37
-27.52
-36.04
-37.42
-46.25
-54.30
-61.83
-69.36
-76.80
-84.22
-118.09
-149.84
175.62
145.43
108.81
43.37
-20.01
-73.96
-129.44
-174.95
133.54
68.72
-56.19
-142.79
133.45
50.35
179.81
91.57
52.36
4.18
S21
Mag.
-70.39
-69.16
-76.73
-76.40
-79.44
-82.26
-81.51
-82.42
-81.13
-80.98
-77.14
-75.53
-74.01
-75.82
-74.62
-78.94
-54.42
16.10
-6.09
-75.43
-77.68
-79.90
-79.59
-65.59
-54.83
-51.92
-52.25
-52.26
-51.91
-50.59
-49.90
-53.88
-54.39
-39.20
-27.63
-42.97
-37.01
-24.67
-20.63
-19.84
-29.61
-25.13
-24.93
-28.24
-21.00
-24.58
-25.69
-24.25
-21.63
S21
Ang.
-97.32
-138.73
63.86
176.75
149.69
-11.94
153.55
40.14
4.95
20.28
-3.31
-6.38
-31.95
-51.00
-52.43
-94.19
173.14
157.09
-3.46
-141.27
-133.47
-164.72
150.62
57.67
2.11
-51.69
-82.45
-99.40
-111.81
-154.73
169.50
123.13
-10.94
-100.13
130.07
-39.94
61.20
117.64
41.58
-86.50
-94.04
-126.95
161.15
145.51
54.18
-71.53
96.10
-42.63
177.14
S12
Mag.
-69.97
-72.30
-73.74
-78.51
-80.33
-78.34
-82.35
-85.39
-80.01
-81.98
-79.31
-82.00
-81.92
-86.49
-82.08
-78.84
-70.76
-29.37
-51.01
-80.16
-75.83
-75.06
-73.21
-70.33
-67.29
-64.81
-63.37
-62.01
-61.19
-56.43
-53.05
-50.94
-51.69
-56.65
-43.36
-53.04
-39.13
-27.12
-23.81
-23.10
-34.87
-28.33
-28.26
-28.54
-22.58
-27.36
-26.34
-25.64
-22.08
S12
Ang.
-112.11
169.58
-156.90
129.65
-109.07
-150.44
-45.85
163.19
130.58
114.35
87.20
123.22
-13.35
-162.55
-66.69
-121.08
-152.73
109.49
-52.59
-92.38
-134.34
-137.96
-126.80
-133.91
-132.12
-146.54
-150.82
-157.87
-162.45
176.99
153.40
127.37
108.35
120.15
116.78
143.68
149.21
69.33
38.85
-107.44
-65.55
-111.80
178.99
162.38
64.69
-63.53
92.52
-45.43
-177.16
S22
Mag.
-0.02
-0.02
-0.03
-0.04
-0.05
-0.07
-0.09
-0.11
-0.13
-0.14
-0.15
-0.18
-0.20
-0.23
-0.26
-0.31
-1.07
-6.41
-1.20
-0.32
-0.33
-0.34
-0.34
-0.35
-0.36
-0.36
-0.37
-0.37
-0.37
-0.38
-0.36
-0.41
-0.49
-0.73
-6.93
-0.94
-1.03
-1.64
-2.93
-3.54
-2.20
-1.57
-2.04
-3.01
-4.55
-4.52
-2.40
-4.30
-8.61
S22
Ang.
-1.20
-2.34
-4.76
-7.16
-9.57
-12.01
-14.48
-17.06
-19.74
-20.51
-22.55
-25.00
-27.48
-30.95
-34.83
-40.01
-49.72
52.69
4.51
-35.70
-42.55
-46.47
-47.08
-51.03
-54.76
-58.27
-61.70
-65.02
-68.40
-83.94
-98.87
-115.93
-131.23
-153.35
78.08
178.58
135.81
116.29
71.46
83.40
54.36
29.96
-4.80
-34.28
-100.24
108.07
29.96
-28.21
114.98
11
11 Page | ||
| Páginas | Total 15 Páginas | |
| PDF Descargar | [ Datasheet ALM-1812.PDF ] | |
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