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PDF MGA-71543 Data sheet ( Hoja de datos )
| Número de pieza | MGA-71543 | |
| Descripción | Low Noise Amplifier | |
| Fabricantes | AVAGO | |
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MGA-71543
Low Noise Amplifier with
Mitigated Bypass Switch
Data Sheet
Description
Avago’s MGA-71543 is an
economical, easy-to-use GaAs
MMIC Low Noise Amplifier (LNA),
which is designed for adaptive
CDMA and W-CDMA receiver
systems. The MGA-71543 is part
of the Avago Technologies com-
plete CDMAdvantage RF chipset.
The MGA-71543 features a
minimum noise figure of 0.8 dB
and 16 dB available gain from a
single stage, feedback FET
amplifier. The input and output
are partially matched, and only a
simple series/shunt inductor
match is required to achieve low
noise figure and VSWR into 50Ω.
When set into the bypass mode,
both input and output are inter-
nally matched through a mitigative
circuit. This circuit draws no
current, yet duplicates the in and
out impedance of the LNA. This
allows the system user to have
minimum mismatch change from
LNA to bypass mode, which is
very important when the
MGA-71543 is used between
duplexers and/or filters.
The MGA-71543 offers an integrated
solution of LNA with adjustable
IIP3. The IIP3 can be fixed to a
desired current level for the
receiver’s linearity requirements.
The LNA has a bypass switch
function, which provides low
insertion loss at zero current. The
bypass mode also boosts dynamic
range when high level signal is
being received.
The MGA-71543 is designed for
CDMA and W-CDMA receiver
systems. The IP3, Gain, and
mitigative network are tailored to
these applications where filters
are used. Many CDMA systems
operate 20% LNA mode, 80%
bypass. With the bypass current
draw of zero and LNA of 10 mA,
the MGA-71543 allows an average
2 mA current.
The MGA-71543 is a GaAs MMIC,
processed on Avago’s cost effec-
tive PHEMT (Pseudomorphic High
Electron Mobility Transistor
Technology). It is housed in the
SOT343 (SC70 4-lead) package.
Attention:
Observe precautions for
handling electrostatic
sensitive devices.
ESD Machine Model (Class A)
ESD Human Body Model (Class 0)
Refer to Agilent Application Note A004R:
Electrostatic Discharge Damage and Control.
Features
• Lead-free Option Available
• Operating frequency:
0.1 GHz ~ 6.0 GHz
• Noise figure: 0.8 dB (NFmin)
• Gain: 16 dB
• Average Idd = 2mA in CDMA
handset
• Bypass switch on chip
Loss = -5.6 dB (Id < 5 µA)
IIP3 = +35 dBm
• Adjustable input IP3: 0 to +9 dBm
• 2.7 V to 4.2 V operation
Applications
• CDMA (IS-95, J-STD-008) Receiver
LNA
• Transmit Driver Amp
• W-CDMA Receiver LNA
• TDMA (IS-136) handsets
Surface Mount Package
SOT-343/4-lead SC70
Pin Connections and
Package Marking
3
INPUT
& Vref
4
RF Gnd
& Vs
1
RF Gnd
& Vs
2
OUTPUT
& Vd
1 page  
MGA-71543 Typical Performance, continued
Tc = 25°C, Zo = 50, Vd = 3V, Id = 10 mA unless stated otherwise. Data vs. frequency was measured in Figure 5 test system
and was optimized for each frequency with external tuners.
18
15
12
9
6
3
6 mA
0 10 mA
20 mA
-3
012 3 456
FREQUENCY (GHz)
Figure 15. Input Third Order Intercept Point
vs. Frequency and Current.
2.2
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
0 10 20 30 40
Id CURRENT (mA)
Figure 18. Minimum Noise Figure vs. Current
(2 GHz).
18
15
12
9
-6
3
-40°C
0
+25°C
+85°C
-3
0 10 20 30 40
Idsq CURRENT (mA)
Figure 16. Output Power at 1 dB Compression
vs. Idsq Current and Temperature (Passive
Bias, Vref Fixed)[4].
20
17
14
11
8
-40°C
5 +25°C
+85°C
2
0 10 20 30 40
Id CURRENT (mA)
Figure 19. Gain vs. Current and Temperature
(2 GHz).
18
15
12
9
6
3
-40°C
0
+25°C
+85°C
-3
0 10 20 30 40
Id CURRENT (mA)
Figure 17. Output Power at 1 dB Compression
vs. Current and Temperature (Source Resistor
Bias in Evaluation Circuit)[5].
12
9
6
3
0
-40°C
+25°C
+85°C
-3
0 10 20 30 40
Id CURRENT (mA)
Figure 20. Input Third Intercept Point vs.
Current and Temperature (2 GHz).
1.0
0.8
0.6
0.4
0.2
0
0 10 20 30
Id CURRENT (mA)
Figure 21. Control Voltage vs. Current.
40
Notes:
4. P1dB measurements were performed with
passive biasing in Production Test Circuit
(Figure 4.). Quiescent drain current, Idsq, is
set by a fixed Vref with no RF drive applied.
As P1dB is approached, the drain current may
increase or decrease depending on frequency
and DC bias point which typically results in
higher P1dB than if the drain current is
maintained constant by active biasing.
5. P1dB measurements were performed in
Evaluation Test Circuit with source resistor
biasing which maintains the drain current
near the quiescent value under large signal
conditions.
5
5 Page 
MGA-71543 Typical Scattering Parameters and Noise Parameters
TC = 25°C, Vds = 2.7 V, Vref = -0.3 V, Id = 40 mA, ZO = 50Ω
Freq S11 S11
(GHz) Mag. Ang.
S21 S21
Mag. Ang.
S12 S12
Mag. Ang.
S22
Mag.
0.3
0.889 -12.3
6.174 169.2
0.022 22.3
0.508
0.5
0.88 -19.8
6.117 161.8
0.025 31.6
0.501
0.7
0.87 -27.4
6.012 155.1
0.029 37.9
0.499
0.9
0.857 -34.9
5.885 148.5
0.035 40.9
0.497
1.1
0.841 -41.9
5.74 142.1
0.04 41.7
0.493
1.3
0.823 -48.7
5.589 136
0.046 41.4
0.488
1.5
0.807 -55.2
5.435 130.2
0.051 40.2
0.483
1.7
0.788 -61.6
5.289 124.5
0.055 38.7
0.477
1.9
0.769 -67.6
5.145 119
0.06 37
0.47
2
0.76 -70.6
5.072 116.3
0.062 36.1
0.466
2.1
0.75 -73.5
5.003 113.7
0.064 35.1
0.462
2.2
0.739 -76.3
4.93 111
0.066 34.2
0.458
2.3
0.73 -79.4
4.865 108.4
0.068 33.1
0.452
2.4
0.718 -82.2
4.801 105.9
0.07 32
0.448
2.5
0.709 -85.2
4.739 103.3
0.072 30.9
0.442
3
0.656 -99.3
4.447 91
0.081 25.5
0.413
3.5 0.608 -113.8 4.197 79
0.089 20
0.38
4
0.559 -129.5 3.963 67.3
0.095 14
0.344
4.5
0.521 -146
3.751 55.6
0.101 8.2
0.31
5
0.49 -163
3.53 44.1
0.106 2
0.278
6
0.457 165.4
3.124 22.5
0.114 -8.6
0.236
7
0.447 137.1
2.776 2.2
0.12 -19.8
0.201
8
0.436 109.8
2.484 -17.2
0.122 -30.9
0.146
9
0.462 84.5
2.28 -36
0.132 -37.8
0.096
10
0.546 59.1
2.102 -56.7
0.146 -50.8
0.101
11
0.621 37.8
1.861 -77
0.152 -64.7
0.177
12
0.672 20.3
1.649 -95.4
0.155 -77.6
0.244
13
0.705 2.9
1.478 -114.1 0.157 -91.3
0.293
14
0.733 -14.6
1.32 -133.9 0.157 -105.8 0.366
15
0.768 -31.3
1.129 -153.1 0.149 -119.7 0.461
16
0.786 -45.7
0.946 -170.6 0.141 -132.5 0.545
17
0.794 -56.1
0.801 174.5
0.136 -143.6 0.595
18
0.83 -67.4
0.703 158.5
0.131 -157.4 0.641
S22
Ang.
-8.9
-13.7
-19.1
-24.2
-29
-33.4
-37.5
-41.3
-45
-46.5
-48.2
-50
-51.4
-53
-54.5
-61.9
-69.7
-77.9
-87.7
-98
-117.5
-137.1
-151.4
-173.8
112
66.8
42.3
19.8
-2.2
-19.1
-32.1
-45.1
-58.8
S21
(dB)
15.8
15.7
15.6
15.4
15.2
14.9
14.7
14.5
14.2
14.1
14.0
13.9
13.7
13.6
13.5
13.0
12.5
12.0
11.5
11.0
9.9
8.9
7.9
7.2
6.5
5.4
4.3
3.4
2.4
1.1
-0.5
-1.9
-3.1
Gmax
(dB)
23.9
23.5
23.0
22.4
21.7
21.0
20.4
19.8
19.2
18.9
18.6
18.3
18.0
17.7
17.5
16.2
15.1
14.1
13.3
12.5
11.2
10.0
8.9
8.2
8.0
7.6
7.2
6.8
6.4
6.0
5.2
4.3
4.3
RLin RLout Isolation
(dB) (dB) (dB)
-1.0 -5.9 -33.2
-1.1 -6.0 -32.0
-1.2 -6.0 -30.8
-1.3 -6.1 -29.1
-1.5 -6.1 -28.0
-1.7 -6.2 -26.7
-1.9 -6.3 -25.8
-2.1 -6.4 -25.2
-2.3 -6.6 -24.4
-2.4 -6.6 -24.2
-2.5 -6.7 -23.9
-2.6 -6.8 -23.6
-2.7 -6.9 -23.3
-2.9 -7.0 -23.1
-3.0 -7.1 -22.9
-3.7 -7.7 -21.8
-4.3 -8.4 -21.0
-5.1 -9.3 -20.4
-5.7 -10.2 -19.9
-6.2 -11.1 -19.5
-6.8 -12.5 -18.9
-7.0 -13.9 -18.4
-7.2 -16.7 -18.3
-6.7 -20.4 -17.6
-5.3 -19.9 -16.7
-4.1 -15.0 -16.4
-3.5 -12.3 -16.2
-3.0 -10.7 -16.1
-2.7 -8.7 -16.1
-2.3 -6.7 -16.5
-2.1 -5.3 -17.0
-2.0 -4.5 -17.3
-1.6 -3.9 -17.7
Freq
(GHz)
0.7
0.9
1.1
1.3
1.5
1.7
1.9
2
2.1
2.2
2.3
2.4
2.5
3
5
6
Fmin
(dB)
0.69
0.73
0.73
0.77
0.77
0.8
0.83
0.85
0.86
0.9
0.91
0.91
0.93
0.98
1.19
1.35
GAMMA OPT
Mag Ang
0.56 17.3
0.57 23.9
0.56 30.8
0.54 36.5
0.58 40.7
0.57 43.9
0.55 49.7
0.54 52.1
0.54 54.3
0.54 55.5
0.54 59.3
0.52 61
0.52 63.2
0.49 74.7
0.37 136
0.35 172.8
Rn/50
0.32
0.3
0.31
0.3
0.29
0.29
0.28
0.27
0.27
0.26
0.26
0.25
0.25
0.22
0.1
0.08
Ga
(dB)
18.5
18.3
18
17.6
17.6
17.3
16.9
16.7
16.5
16.4
16.2
16
15.8
15
11.9
10.7
11
11 Page | ||
| Páginas | Total 24 Páginas | |
| PDF Descargar | [ Datasheet MGA-71543.PDF ] | |
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