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PDF MGA-231T6 Data sheet ( Hoja de datos )
| Número de pieza | MGA-231T6 | |
| Descripción | High-Gain GPS LNA | |
| Fabricantes | Avago Technologies | |
| Logotipo |  |
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MGA-231T6
High-Gain GPS LNA
with Variable Current and Shutdown Function
Data Sheet
Description
Avago Technologies’ MGA-231T6 is a low-noise amplifier
(LNA) designed for GPS/ISM/Wimax applications in the
(0.9-3.5)GHz frequency range. 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 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 2.0x1.3x0.4 mm3 6-lead UTSLP
PIN 1: Vsd
PIN 2: RFin
31YM
PIN 6: Vdd
PIN 5: RFout
Features
Very Low Noise Figure
High Gain and Linearity
Low External Component Count
Low Shutdown Current
CMOS compatible shutdown pin (SD) current @ Vsd=
1.8V : 0.11mA
Useable down to 1.8V supply
Adjustable current via single external resistor/voltage
Small package dimension: 2.0(L)x1.3(W)x0.4(H) mm
Specifications (Typical performance @ 25°C)
At 1.575GHz
Vdd = 2.85V, Vsd = 1.8V, Idd =4mA
– Gain = 17.1 dB
– NF = 1.06 dB
– Input IP3 = 0.2 dBm
– Input P1dB = -7.7 dBm
PIN 3: NC
Top View
PIN 4:NC [1]
Application
LNA for GPS, WLAN and WIMAX
PIN 6: Vdd
PIN 1: Vsd
PIN 5: RFout GND PIN 2: RFin
PIN 4:NC [1]
PIN 3: NC
Bottom View
Note:
1. Pin 4 must be left unconnected
2. Package marking provides orientation and identification
“31” = Product Code
“Y” = Year of manufacture
“M” = Month code of manufacture
1 page  
Vd
Vsd
R1 L1
C3
(C3 and R2 are optional,
see notes [3, 4] below)
(R1 and L1 optional,
see notes [3] below)
C1
C2
R2 (Rbias)
1
L3
RFin
2
MGA-231T6
Bias/control
L2
6
5 RFout
L4 3
NU
4 NU [1]
Notes:
1. Pin 4 must be left unconnected
2. L3 and L4 form the input matching network. C2 and L2 form a matching network at the output of the LNA.
3. L1 and R1 isolates the demoboard from external disturbances during measurement. It is not needed in actual application. Likewise, C1 and C3
mitigate the effect of external noise pickup on the Vdd and SD lines respectively. These components are not required in actual operation.
4. Bias control is achieved by either varying the SD voltage with/without R2, or fixing the SD voltage to Vdd and adjusting R2 for the desired current.
R2 = 8.2 kOhm will result in 4mA when Vdd = 2.85V, Vsd = 1.8V or Vdd = 1.8V, Vsd = 2.6V. R2 = 5.6 kOhm will result in 6mA when Vdd = Vsd = 2.7V.
Figure 2. Demo board and application schematic diagram
5
5 Page 
MGA-231T6 Scattering Parameter Measurement with Vdd = 1.8V, Idd = 4mA, L2 = 2.7nH, C2 = 47pF (Murata 0402)
Freq
(GHz)
0.5
0.6
0.7
0.8
0.825
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
2.3
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.
0.9825
0.9793
0.9765
0.9663
0.9665
0.9648
0.9565
0.9558
0.9526
0.9524
0.9391
0.9028
0.8646
0.8564
0.8349
0.8209
0.8131
0.8123
0.8002
0.7686
0.7548
0.7451
0.6979
0.6580
0.6245
0.5943
0.5684
0.5415
0.5339
0.5945
0.5000
0.2489
0.4126
0.2770
0.5459
0.6920
0.8035
0.8182
0.8337
0.8130
0.5099
0.8470
S11
Ang.
-10.15
-11.47
-13.31
-15.29
-15.75
-17.15
-19.15
-21.13
-23.33
-26.00
-29.42
-32.66
-33.73
-33.84
-34.17
-34.87
-35.85
-36.02
-37.32
-41.43
-42.99
-44.42
-50.99
-53.48
-57.81
-63.28
-69.23
-82.60
-100.27
-125.24
-3.84
-146.57
1.84
-159.67
159.23
135.03
124.06
101.67
81.30
64.98
37.02
45.58
S21
Mag.
0.0906
0.1661
0.2704
0.4063
0.4463
0.5876
0.8336
1.1806
1.6903
2.4390
3.4006
4.0160
3.8833
3.7630
3.1833
2.6573
2.3409
2.3042
2.0699
1.5526
1.4381
1.3436
1.0233
0.8159
0.6701
0.5618
0.4726
0.3162
0.1857
0.0921
0.1101
0.1819
0.2993
0.1565
0.1300
0.1960
0.2092
0.2785
0.3034
0.2975
0.2882
0.3755
S21
Ang.
-37.07
-43.04
-46.77
-52.89
-54.48
-59.88
-67.85
-77.33
-89.41
-106.13
-130.68
-162.73
174.11
167.55
146.24
131.61
123.12
121.97
112.57
92.26
86.59
81.95
58.01
39.03
20.89
3.19
-14.19
-48.43
-80.08
-106.89
-120.20
132.97
64.47
-27.13
13.95
3.18
-4.85
-21.97
-42.00
-57.51
-81.85
-74.73
S12
Mag.
0.0001
0.0000
0.0002
0.0007
0.0008
0.0014
0.0024
0.0041
0.0069
0.0112
0.0176
0.0232
0.0242
0.0237
0.0214
0.0197
0.0183
0.0179
0.0177
0.0158
0.0160
0.0153
0.0160
0.0168
0.0182
0.0199
0.0221
0.0284
0.0366
0.0329
0.0903
0.2441
0.3721
0.1713
0.0924
0.1735
0.1888
0.2692
0.3002
0.2945
0.2870
0.3752
S12
Ang.
86.13
105.28
-106.21
-101.05
-102.37
-107.63
-113.29
-119.68
-128.17
-141.68
-163.17
168.35
146.51
141.31
123.70
112.37
106.92
106.42
101.62
91.80
88.74
87.03
82.57
80.94
79.81
78.00
77.59
75.74
69.40
50.49
164.34
81.85
30.62
-74.37
15.06
3.55
-0.19
-20.20
-41.91
-58.68
-84.34
-78.06
S22
Mag.
0.9960
0.9923
0.9896
0.9904
0.9877
0.9830
0.9745
0.9487
0.9027
0.7914
0.5493
0.2205
0.3438
0.4174
0.6451
0.7650
0.8116
0.8165
0.8725
0.9291
0.9396
0.9358
0.9459
0.9576
0.9540
0.9543
0.9607
0.9560
0.9595
0.9613
0.9294
0.8589
0.7145
0.8323
0.9377
0.9183
0.9206
0.8893
0.8757
0.8962
0.8667
0.9026
S212
Ang.
-21.99
-27.93
-33.11
-38.70
-40.10
-45.00
-52.43
-61.69
-74.29
-93.29
-125.98
148.71
55.97
41.76
8.79
-9.46
-19.18
-20.30
-28.41
-47.46
-52.50
-56.93
-77.14
-94.78
-111.28
-126.53
-141.88
-174.16
159.04
139.04
119.46
103.44
82.67
91.53
68.53
59.36
52.63
36.32
22.99
12.50
2.04
-5.60
11
11 Page | ||
| Páginas | Total 15 Páginas | |
| PDF Descargar | [ Datasheet MGA-231T6.PDF ] | |
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