DEMO-MGA-7X543B [BOARDCOM]
Low Noise Amplifier with Mitigated Bypass Switch;
| 型号： | DEMO-MGA-7X543B |
| 厂家： | 
Broadcom Corporation. |
| 描述： | Low Noise Amplifier with Mitigated Bypass Switch |
| 文件： | 总24页 (文件大小：564K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MGA-71543
Low Noise Amplifier with Mitigated Bypass Switch
Data Sheet
Description
Features
Avago’s MGA-71543 is an economical, easy-to-use GaAs • Lead-free Option Available
MMIC Low Noise Amplifier (LNA), which is designed for
• Operating frequency: 0.1 GHz ~ 6.0 GHz
adaptive CDMA and W-CDMA receiver systems. The MGA-
71543 is part of the Avago Technologies complete CD-
MAdvantage RF chipset.
• Noise figure: 0.8 dB (NFmin)
• Gain: 16 dB
• Average Idd = 2mA in CDMA handset
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.
• 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 4.2V operation
When set into the bypass mode, both input and output
are internally matched through a mitigative circuit. This
circuit draws no current, yet duplicates the in and out im-
pedance 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 be-
tween duplexers and/or filters.
Applications
• CDMA (IS-95, J-STD-008) Receiver LNA
• Transmit Driver Amp
• W-CDMA Receiver LNA
• TDMA (IS-136) handsets
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.
Attention:
Observe precautions for handling
electrostatic sensitive devices.
ESD Machine Model (Class A)
ESD Human Body Model (Class 0)
Refer to Avago Application Note A004R:
Electrostatic Discharge Damage and Control.
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 re-
ceiver 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.
Surface Mount Package SOT-343/4-lead SC70
The MGA-71543 is a GaAs MMIC, processed on Avago’s
cost effective PHEMT (Pseudomorphic High Electron Mo-
bility Transistor Technology). It is housed in the SOT343
(SC70 4-lead) package.
Pin Connections and Package Marking
3
1
INPUT
& V
RF Gnd
& V
s
ref
71= Unit marking
x = Date Code marking
4
2
RF Gnd
& V
OUTPUT
d
& V
s
Functional Block Diagram
Simplified Schematic
Evaluation Test Circuit
(single positive bias)
1.5 nH
Input
+
–
+
–
2.7 nH
RF IN
RF OUT
Control
Output
Input
Output
& V
d
& V
ref
Gain FET
R
bias
V
Switch & Bias
d
RF Gnd
& Vs
RF Gnd
control
MGA-71543 Absolute Maximum Ratings[1]
Symbol Parameter
Thermal Resistance:[2, 3]
Units Absolute
Maximum
Operation
Maximum
θ
jc = 240°C/W
Notes:
Vd
Vc
Maximum Input to Output Voltage[4]
V
V
5.5
4.2
1. Operation of this device in excess of any of
these limits may cause permanent damage.
2. Ground lead temperature at 25°C.
3. Thermal resistance measured by 150°C Liquid
Crystal Measurement method.
Maximum Input to Ground DC Voltage[4]
+.3
-5.5
+.1
-4.2
Id
Supply Current
mA
mW
dBm
°C
60
50
4. Maximum rating assumes other parameters
are at DC quiescent conditions.
Pd
Power Dissipation[2]
CW RF Input Power
Junction Temperature
Storage Temperature
240
200
Pin
Tj
+15
+10
170
150
TSTG
°C
-65 to +150
-40 to +85
Product Consistency Distribution Charts[5,6]
150
150
120
90
60
30
0
150
Cpk = 2.33
Std = 0.02
Cpk = 2.00
Std = 0.24
Cpk = 1.16
Std = 0.96
120
120
90
60
30
0
90
+3 Std
+3 Std
+3 Std
-3 Std
-3 Std
-3 Std
60
30
0
0.85 0.95
1.05
1.15
1.25
1.35 1.45
14.4
15.4
16.4
17.4
1
2
3
4
5
6
7
8
NF (dB)
GAIN (dB)
IIP3 (dBm)
Figure 3. NF @ 2 GHz, 3V, 10 mA.
LSL = 0.85, Nominal = 1.08, USL = 1.45
Figure 1. Gain @ 2 GHz, 3V, 10 mA.
LSL = 14.4, Nominal = 15.9, USL = 17.4
Figure 2. IIP3 @ 2 GHz, 3V, 10 mA.
LSL = 1.0, Nominal = 3.0, USL = 8.0
Notes:
5. Distribution data sample size is 450 samples
taken from 9 different wafers. Future wafers
allocated to this product may have nominal
values anywhere within the upper and lower
specification limits.
Excess circuit losses have been de-embedded
from actual measurements. Performance may
be optimized for different bias conditions and
applications. Consult Application Note for
details.
6. Measurements made on production test
board, Figure 4. This circuit represents a
trade-off between an optimal noise match
and a realizable match based on production
test requirements at 10 mA bias current.
2
MGA-71543 Electrical Specifications
Tc = +25°C, Zo = 50Ω, Id = 10 mA, Vd = 3V, unless noted
Symbol
Parameter and Test Condition
Units
Min.
Typ.
Max.
σ [1]
Vref test
NF test
Vds = 2.4V
Id = 10 mA
Id = 10 mA
Id = 10 mA
Id = 10 mA
Id = 0 mA
V
-0.86
-0.65
1.1
-0.43
1.45
17.4
0.041
0.02
0.24
0.96
0.12
f = 2.01 GHz
f = 2.01 GHz
f = 2.01 GHz
Vd = 3.0V (= Vds - Vref)
Vd = 3.0V (= Vds - Vref)
Vd = 3.0V (= Vds - Vref)
Vds = 0 V, Vref = -3 V
dB
dB
dBm
dB
Gain test
IIP3 test
14.4
1
15.9
3.0
Gain, Bypass
f = 2.01 GHz
Bypass Mode[6]
-6.4
-5.6
Ig test
Bypass Mode Vds = 0 V, Vref = -3 V[6]
Id = 0 mA
µA
2.0
1.5
NFmin[3]
Minimum Noise Figure
f = 0.9 GHz
f = 1.5 GHz
f = 1.9 GHz
f = 2.1 GHz
f = 2.5 GHz
f = 6.0 GHz
dB
0.7
0.7
0.8
0.8
0.8
1.1
As measured in Figure 5 Test Circuit
(Γopt computed from s-parameter and
noise parameter performance as measured
in a 50Ω impedance fixture)
Ga[3]
Associated Gain at Nfo
f = 0.9 GHz
f = 1.5 GHz
f = 1.9 GHz
f = 2.1 GHz
f = 2.5 GHz
f = 6.0 GHz
dB
17.1
16.4
15.8
15.4
14.9
10.0
As measured in Figure 5 Test Circuit
(Gopt computed from s-parameter and
noise parameter performance as measured
in a 50Ω impedance fixture)
P1dB
IIP3
Output Power at 1 dB Gain Compression
As measured in Evaluation Test Circuit with
source resistor biasing[4,5]
Id = 6 mA
Id = 10 mA
Id = 20 mA
Id = 40 mA
dBm
dBm
+3.0
+7.4
+13.1
+15.5
Frequency = 2.01 GHz
Input Third Order Intercept Point
As measured in Figure 4 Test Circuit[5]
Frequencies = 2.01 GHz, 2.02 GHz
Id = 6 mA
-0.5
Id = 10 mA
Id = 20 mA
Id = 40 mA
+3.0
+7.4
+8.7
Switch
Bypass Switch Rise/Fall Time
(10% - 90%)
Intrinsic
10
As measured in Evaluation Test Circuit
Eval Circuit
nS
dB
dB
dB
100
RLin
Input Return Loss as measured in Fig. 4
Output Return Loss as measured in Fig. 4
Isolation |s12|2 as measured in Fig. 5
f = 2.01 GHz
f = 2.01 GHz
f = 2.01 GHz
6.0
0.31
0.65
RLout
ISOL
10.9
-22.5
Notes:
1. Standard Deviation and Typical Data based at least 450 part sample size from 9 wafers. Future wafers allocated to this product may have nominal values
anywhere within the upper and lower spec limits.
2. Measurements made on a fixed tuned production test circuit (Figure 4) that represents a trade-off between optimal noise match, maximum gain match,
and a realizable match based on production test board requirements at 10 mA bias current. Excess circuit losses have been de-embedded from actual
measurements. Vd=Vds-Vref where Vds is adjusted to maintain a constant Vd bias equivalent to a single supply 3V bias application. Consult Applica-
tions Note for circuit biasing options.
3. Minimum Noise Figure and Associated Gain data computed from s-parameter and noise parameter data measured in a 50Ω system using ATN NP5 test
system. Data based on 10 typical parts from 9 wafers. Associated Gain is the gain when the product input is matched for minimum Noise Figure.
4. P1dB measurements were performed in the evaluation circuit with source resistance biasing. As P1dB is approached, the drain current is maintained
near the quiescent value by the feedback effect of the source resistor in the evaluation circuit. Consult Applications Note for circuit biasing options.
5. Measurements made on a fixed tuned production test circuit that represents a trade-off between optimal noise match, maximum gain match, and a
realizable match based on production test board requirements at 10 mA bias current. Performance may be optimized for different bias conditions and
applications. Consult Applications Note.
6. The Bypass Mode test conditions are required only for the production test circuit (Figure 4) using the gate bias method. In the preferred source resistor
bias configuration, the Bypass Mode is engaged by presenting a DC open circuit instead of the bias resistor on Pin 4.
3
MGA-71543 Typical Performance
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.
960 pF
V
ds
Test Fixture
RF
Input
Bias Tee
V
ds
RF
56 pF
1.5 nH
Input
56 pF
Bias
Tee
RF
Output
3
4
V
ref
RF
Output
1
2
2.7 nH
3.9 nH
V
ref
56 pF
Figure 4. MGA-71543 Production Test Circuit.
Figure 5. MGA-71543 Test Circuit for S, Noise, and
Power Parameters over Frequency.
1.5
1.3
1.1
0.9
20
17
14
11
8
18
15
12
9
6
3
0.7
2.7V
3.0V
3.3V
2.7V
3.0V
3.3V
2.7V
0
3.0V
3.3V
0.5
5
-3
0
1
2
3
4
5
6
0
1
2
3
4
5
6
0
1
2
3
4
5
6
FREQUENCY (GHz)
FREQUENCY (GHz)
FREQUENCY (GHz)
Figure 6. Minimum Noise Figure vs.
Frequency and Voltage.
Figure 7. Associated Gain with Fmin vs.
Frequency and Voltage.
Figure 8. Input Third Order Intercept Point vs.
Frequency and Voltage.
20
18
15
12
9
-40°C
+25°C
+85°C
17
m3
14
6
11
8
m2
m1
3
-40°C
+25°C
0
+85°C
5
-3
0
1
2
3
4
5
6
0
1
2
3
4
5
6
FREQUENCY (GHz)
FREQUENCY (GHz)
500 MHz to 6 GHz
Figure 10. Input Third Order Intercept Point
vs. Frequency and Temperature.
Figure 11. S11 Impedance vs. Frequency.
(m1 = Sw, m2 = 6 mA, m3 = 10 mA)
Figure 9. Associated Gain with Fmin vs.
Frequency.
18
15
12
9
0
-2
-4
-6
-8
6
m3
m2
m1
3
2.7V
G
w/Fmin
0
ass
3.0V
Minimum
3.3V
-3
-10
0
1
2
3
4
5
6
0
1
2
3
4
5
6
500 MHz to 6 GHz
FREQUENCY (GHz)
FREQUENCY (GHz)
Figure 12. S22 Impedance vs. Frequency.
(m1 = Sw, m2 = 6 mA, m3 = 10 mA)
Figure 14. Output Power at 1 dB Compression
vs. Frequency and Voltage.
Figure 13. Bypass Mode Associated
Insertion Loss with Fmin Match and
Minimum Loss vs. Frequency.
[4]
4
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
18
15
12
9
18
15
12
9
6
-6
3
6
3
3
-40°C
+25°C
+85°C
-40°C
+25°C
+85°C
6 mA
10 mA
20 mA
0
0
0
-3
-3
-3
0
1
2
3
4
5
6
0
20
30
40
0
20
30
40
10
10
FREQUENCY (GHz)
I
CURRENT (mA)
I
d
CURRENT (mA)
dsq
Figure 15. Input Third Order Intercept Point
vs. Frequency and Current.
Figure 16. Output Power at 1 dB Compression
Figure 17. Output Power at 1 dB Compression
vs. I Current and Temperature (Passive
vs. Current and Temperature (Source Resistor
dsq
[4]
[5]
Bias, V Fixed)
ref
.
Bias in Evaluation Circuit)
12
.
20
17
14
11
8
2.2
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
9
6
3
-40°C
+25°C
+85°C
-40°C
+25°C
+85°C
0
5
-3
2
0
20
30
40
0
20
CURRENT (mA)
30
40
0
20
I CURRENT (mA)
d
30
40
10
10
10
I
d
CURRENT (mA)
I
d
Figure 18. Minimum Noise Figure vs. Current
(2 GHz).
Figure 19. Gain vs. Current and Temperature
(2 GHz).
Figure 20. Input Third Intercept Point vs.
Current and Temperature (2 GHz).
1.0
0.8
0.6
0.4
0.2
0
0
20
30
40
10
I
d
CURRENT (mA)
Figure 21. Control Voltage vs. Current.
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
MGA-71543 Typical Scattering Parameters
TC = 25°C, Vds = 0V, Vref = -3.0V, Id = 0 mA (bypass mode), ZO = 50Ω
Freq
S11
S11
S21
S21
S12
S12
S22
S22
S21
Gmax RLin RLout Isolation
(GHz) Mag. Ang.
Mag. Ang.
Mag. Ang.
Mag. Ang.
(dB) (dB) (dB) (dB) (dB)
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
0.968
0.961
0.951
0.947
0.937
0.929
0.921
0.913
0.905
0.895
0.887
0.878
0.869
0.862
0.854
0.847
0.839
0.832
0.825
0.819
0.812
0.806
0.8
-4.5
0.021
0.039
0.065
0.09
41.1
70.5
73.7
70.9
65.7
61.4
57
0.021
0.039
0.064
0.09
41.3
70.8
73.9
71
0.936
0.916
0.901
0.89
-5.9
-33.6
-28.2
-23.7
-20.9
-18.9
-17.3
-16.1
-15.1
-14.2
-13.5
-12.9
-12.4
-12.0
-11.6
-11.2
-11.0
-10.7
-10.5
-10.2
-10.1
-9.9
-12.5
-9.1
-6.3
-4.2
-3.6
-2.8
-2.4
-2.2
-2.0
-1.9
-1.9
-2.0
-2.1
-2.1
-2.2
-2.3
-2.4
-2.5
-2.6
-2.7
-2.8
-2.9
-3.0
-3.1
-3.2
-3.6
-3.9
-4.3
-4.6
-4.9
-5.2
-5.7
-6.1
-6.7
-8.3
-10.4
-12.7
-16.5
-23.5
-39.7
-21.9
-17.4
-15.2
-13.6
-11.9
-0.3
-0.3
-0.4
-0.5
-0.6
-0.6
-0.7
-0.8
-0.9
-1.0
-1.0
-1.1
-1.2
-1.3
-1.4
-1.4
-1.5
-1.6
-1.7
-1.7
-1.8
-1.9
-1.9
-2.0
-2.1
-2.4
-2.6
-2.8
-3.0
-3.1
-3.1
-3.1
-3.0
-3.0
-3.0
-2.8
-2.1
-1.8
-1.5
-1.4
-1.4
-1.4
-1.4
-1.5
-1.2
-0.6
-0.8
-0.9
-1.0
-1.2
-1.3
-1.5
-1.6
-1.7
-1.9
-2.0
-2.2
-2.4
-2.5
-2.7
-2.9
-3.0
-3.2
-3.4
-3.5
-3.7
-3.9
-4.1
-4.2
-4.4
-5.2
-6.1
-6.9
-7.6
-8.1
-8.5
-8.8
-9.1
-9.5
-10.7
-12.3
-12.1
-10.3
-8.7
-7.7
-6.4
-5.1
-4.1
-3.5
-3.0
-33.6
-28.2
-23.9
-20.9
-18.9
-17.3
-16.1
-15.1
-14.2
-13.5
-12.9
-12.4
-12.0
-11.6
-11.2
-11.0
-10.7
-10.5
-10.3
-10.1
-9.9
-8.4
-9.5
-11.4
-14.8
-18.1
-21.3
-24.5
-27.7
-30.8
-33.7
-36.6
-39.4
-42.1
-44.7
-47.3
-49.8
-52.4
-54.8
-57.1
-59.5
-61.7
-63.9
-66.3
-68.5
-70.9
-81.8
-93.4
-106
-13.1
-16.5
-20.2
-23.7
-27.1
-30.3
-33.3
-36.3
-39.2
-41.9
-44.4
-46.9
-49.2
-51.4
-53.5
-55.5
-57.6
-59.4
-61.2
-63
0.114
0.136
0.157
0.176
0.194
0.211
0.226
0.239
0.252
0.264
0.274
0.283
0.293
0.3
0.114
0.136
0.157
0.176
0.194
0.211
0.226
0.239
0.252
0.263
0.274
0.283
0.292
0.3
65.9
61.5
57.1
52.8
48.7
44.6
40.6
36.9
33.3
29.8
26.4
23.2
20
0.871
0.861
0.846
0.833
0.82
52.7
48.6
44.5
40.6
36.8
33.2
29.7
26.3
23.1
19.9
16.8
13.8
11
0.806
0.791
0.776
0.762
0.748
0.732
0.719
0.705
0.692
0.679
0.665
0.653
0.639
0.627
0.616
0.603
0.548
0.497
0.452
0.418
0.393
0.376
0.361
0.35
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
2
16.9
14
0.308
0.314
0.321
0.326
0.331
0.336
0.341
0.359
0.371
0.377
0.379
0.374
0.362
0.347
0.328
0.307
0.262
0.202
0.141
0.083
0.034
0.005
0.037
0.058
0.072
0.083
0.088
0.307
0.314
0.32
11.1
8.2
2.1
2.2
2.3
2.4
2.5
3
8.1
5.3
0.326
0.331
0.336
0.34
5.4
-9.7
-9.7
2.6
2.7
-64.6
-66.3
-67.8
-75.5
-83.4
-91.6
-100.7
-110.7
-121.1
-130.9
-141.7
-152
-9.6
-9.6
0.792
0.787
0.76
0
0.1
-9.5
-9.5
-2.7
-2.5
-9.3
-9.4
-15.1
-27.1
-39.1
-51
0.358
0.37
-15
-8.9
-8.9
3.5
4
0.74
-27
-8.6
-8.6
0.721
0.708
0.7
0.377
0.378
0.374
0.362
0.347
0.328
0.307
0.262
0.201
0.141
0.083
0.034
0.005
0.036
0.057
0.072
0.083
0.088
-39
-8.5
-8.5
4.5
5
-119.8
-134.7
-150.2
-165.1
179.7
165.3
136.3
106.4
75
-50.9
-63
-8.4
-8.5
-63.2
-75.2
-86.7
-98.1
-109.4
-133.2
-157.3
179.6
156.7
134.9
-22.1
-73.5
-94
-8.5
-8.5
5.5
6
0.7
-75.1
-86.5
-98
-8.8
-8.8
0.699
0.705
0.708
0.705
0.728
0.781
0.815
0.838
0.847
0.85
-9.2
-9.2
6.5
7
-9.7
-9.7
-109.4
-133.1
-157.2
179.8
156.8
135.6
-19.9
-73.5
-94.1
-112.2
-127.3
-144.4
0.336
0.292
0.242
0.247
0.306
0.367
0.414
0.478
0.555
0.626
0.669
0.706
-10.3
-11.6
-13.9
-17.0
-21.6
-29.4
-46.0
-28.6
-24.7
-22.9
-21.6
-21.1
-10.3
-11.6
-13.9
-17.0
-21.6
-29.4
-46.0
-28.9
-24.9
-22.9
-21.6
-21.1
8
-173.9
156.3
114.9
80.3
9
10
11
12
13
14
15
16
17
18
48.9
28.2
54.2
8.5
29.4
-10.6
-28.5
-43.4
-53.9
-65.2
4.7
0.856
0.848
0.844
0.873
-15.7
-30.1
-44
-112.3
-127.4
-145.2
-58.7
6
MGA-71543 Typical Scattering Parameters and Noise Parameters
TC = 25°C, Vds = 2.25V, Vref = -0.77V, Id = 3 mA, ZO = 50Ω
Freq
S11
S11
S21
S21
S12
S12
S22
S22
S21
Gmax RLin RLout Isolation
(GHz) Mag. Ang.
Mag. Ang.
Mag. Ang.
Mag. Ang.
(dB) (dB) (dB) (dB) (dB)
0.3
0.5
0.7
0.9
1.1
1.3
1.5
1.7
1.9
2
0.927
0.921
0.915
0.909
0.899
0.891
0.883
0.873
0.863
0.858
0.852
0.846
0.841
0.833
0.828
0.794
0.758
0.717
0.679
0.644
0.594
0.565
0.536
0.545
0.608
0.665
0.707
0.735
0.76
-10.1
-16.4
-22.7
-28.8
-34.8
-40.5
-46.2
-51.7
-57
2.945
2.939
2.907
2.871
2.826
2.783
2.728
2.693
2.652
2.63
170.7
164.1
158.3
152.6
147
0.028
0.032
0.039
0.047
0.054
0.062
0.069
0.076
0.082
0.086
0.089
0.092
0.095
0.098
0.1
23.9
32.9
38.7
41.3
41.5
40.5
38.8
36.7
34.3
33
0.754
0.744
0.742
0.74
-7.9
9.4
9.4
9.3
9.2
9.0
8.9
8.7
8.6
8.5
8.4
8.3
8.3
8.2
8.1
8.1
7.9
7.7
7.5
7.3
7.1
6.3
5.5
4.7
4.1
3.5
2.5
1.3
0.3
-0.9
-2.4
-4.3
-6.0
-7.4
21.6
21.1
20.6
20.2
19.6
19.1
18.6
18.0
17.5
17.2
17.0
16.7
16.5
16.2
15.9
14.7
13.6
12.5
11.6
10.7
9.2
-0.7
-0.7
-0.8
-0.8
-0.9
-1.0
-1.1
-1.2
-1.3
-1.3
-1.4
-1.5
-1.5
-1.6
-1.6
-2.0
-2.4
-2.9
-3.4
-3.8
-4.5
-5.0
-5.4
-5.3
-4.3
-3.5
-3.0
-2.7
-2.4
-2.1
-1.9
-1.9
-1.5
-2.5
-2.6
-2.6
-2.6
-2.7
-2.7
-2.8
-2.8
-2.9
-3.0
-3.0
-3.1
-3.1
-3.2
-3.2
-3.6
-4.1
-4.6
-5.2
-5.8
-6.9
-7.8
-9.3
-11.0
-11.9
-11.2
-10.0
-9.0
-7.5
-5.8
-4.4
-3.7
-3.1
-31.1
-29.9
-28.2
-26.6
-25.4
-24.2
-23.2
-22.4
-21.7
-21.3
-21.0
-20.7
-20.4
-20.2
-20.0
-18.9
-18.1
-17.5
-17.0
-16.8
-16.9
-17.2
-18.0
-18.6
-18.4
-18.4
-18.5
-18.4
-18.3
-18.6
-18.8
-18.9
-19.2
-12.6
-17.5
-22.1
-26.7
-30.9
-34.9
-38.7
-42.5
-44.2
-46
0.736
0.732
0.727
0.721
0.716
0.711
0.707
0.703
0.698
0.695
0.689
0.66
141.5
136.3
131.1
126.1
123.7
121.2
118.7
116.3
113.9
111.5
99.7
-59.7
-62.3
-64.8
-67.5
-70
2.1
2.2
2.3
2.4
2.5
3
2.609
2.593
2.579
2.554
2.544
2.479
2.43
31.7
30.4
28.9
27.5
26.1
18.5
10.7
2.1
-47.9
-49.5
-51.3
-52.9
-61.6
-70.5
-80
-72.8
-85.6
-99.1
-113.5
-129
-145.1
-176.1
155
0.114
0.125
0.134
0.141
0.144
0.143
0.138
0.126
0.117
0.12
3.5
4
87.7
0.626
0.587
0.549
0.511
0.454
0.408
0.344
0.281
0.254
0.274
0.317
0.356
0.421
0.511
0.6
2.373
2.323
2.252
2.073
1.885
1.715
1.611
1.503
1.332
1.167
1.03
75.6
4.5
5
63.1
-6.4
-90.3
-100.9
-120.8
-140.1
-157.3
-177.8
145.5
106.1
75.4
50.5
-15.4
-31
6
26.9
7
4.6
-45.3
-58.8
-63.7
-71.8
-81.5
-90
8.0
8
127
-16.6
-37
6.7
9
99.4
6.0
10
11
12
13
14
15
16
17
18
70.4
-59.7
-82
5.8
46.2
0.12
5.4
27.2
-101.9
-121.7
-142.2
-162.1
180
0.119
0.12
4.8
8.7
-99.8
-110.9
-122.8
-134.2
-144.3
-157.8
47.9
4.2
-9.7
0.904
0.757
0.609
0.5
0.122
0.118
0.115
0.113
0.11
20.1
3.7
0.788
0.802
0.808
0.845
-27.4
-42.4
-53.1
-64.7
-4.1
3.1
-21.1
-36.7
-52.6
2.1
165.7
150.7
0.653
0.699
1.0
0.429
1.0
Freq
Fmin
GAMMA OPT
Rn/50
Ga
(GHz)
(dB)
Mag
Ang
(dB)
0.7
0.9
1.1
1.3
1.5
1.7
1.9
2
0.88
0.87
0.9
0.61
0.64
0.65
0.6
16.3
22.4
28.4
33.5
37.2
40.2
45.4
47.6
49.2
50.9
53.9
55.4
57.6
67.9
120
0.45
0.43
0.44
0.43
0.42
0.41
0.4
14.8
14.8
14.7
14.2
14.2
14
0.92
0.95
0.95
0.99
1
0.64
0.63
0.62
0.62
0.61
0.63
0.62
0.6
13.7
13.6
13.4
13.4
13.2
12.9
12.9
12.1
9.6
0.4
2.1
2.2
2.3
2.4
2.5
3
1.02
1.03
1.03
1.04
1.04
1.08
1.21
1.36
0.4
0.39
0.38
0.37
0.37
0.33
0.14
0.08
0.61
0.58
0.49
0.46
5
6
151.2
8.4
7
MGA-71543 Typical Scattering Parameters and Noise Parameters
TC = 25°C, Vds = 2.3 V, Vref = -0.7 V, Id = 6 mA, ZO = 50Ω
Freq
S11
S11
S21
S21
S12
S12
S22
S22
S21
Gmax RLin RLout Isolation
(GHz) Mag. Ang.
Mag. Ang.
Mag. Ang.
Mag. Ang.
(dB) (dB) (dB) (dB) (dB)
0.3
0.5
0.7
0.9
1.1
1.3
1.5
1.7
1.9
2
0.911
0.904
0.896
0.887
0.875
0.864
0.853
0.84
-11
4.164
4.148
4.094
4.029
3.953
3.877
3.791
3.723
3.649
3.611
3.576
3.55
170.2
163.3
157.1
151.1
145.2
139.5
134
0.026
0.03
23.5
32.6
38.5
41
0.667
0.658
0.656
0.654
0.648
0.643
0.638
0.631
0.624
0.619
0.615
0.609
0.604
0.6
-8.4
12.4
12.4
12.2
12.1
11.9
11.8
11.6
11.4
11.2
11.2
11.1
11.0
10.9
10.8
10.7
10.4
10.1
9.7
22.6
22.2
21.7
21.2
20.6
20.0
19.5
18.9
18.4
18.1
17.8
17.6
17.3
16.9
16.7
15.5
14.3
13.3
12.4
11.5
10.1
8.9
-0.8
-0.9
-1.0
-1.0
-1.2
-1.3
-1.4
-1.5
-1.7
-1.7
-1.8
-1.9
-2.0
-2.1
-2.2
-2.6
-3.2
-3.8
-4.3
-4.8
-5.5
-5.9
-6.3
-6.0
-4.8
-3.9
-3.3
-2.9
-2.6
-2.2
-2.1
-2.0
-1.6
-3.5
-3.6
-3.7
-3.7
-3.8
-3.8
-3.9
-4.0
-4.1
-4.2
-4.2
-4.3
-4.4
-4.4
-4.5
-5.0
-5.6
-6.3
-7.1
-7.8
-9.1
-10.2
-12.1
-14.5
-15.2
-13.2
-11.3
-10.0
-8.2
-6.3
-4.9
-4.1
-3.5
-31.7
-30.5
-28.9
-27.3
-26.0
-24.9
-24.0
-23.2
-22.5
-22.2
-21.8
-21.5
-21.3
-21.0
-20.8
-19.8
-19.0
-18.5
-18.1
-17.9
-17.7
-17.8
-18.2
-18.2
-17.6
-17.5
-17.3
-17.3
-17.3
-17.7
-18.1
-18.3
-18.6
-17.7
-24.5
-31.2
-37.5
-43.7
-49.7
-55.6
-61.2
-64
-13.4
-18.5
-23.5
-28.2
-32.6
-36.8
-40.7
-44.6
-46.4
-48.2
-50.1
-51.7
-53.5
-55.1
-63.7
-72.6
-82
0.036
0.043
0.05
41.3
40.4
38.8
36.7
34.5
33.3
32.1
30.7
29.4
28.1
26.7
19.7
12.6
4.9
0.057
0.063
0.069
0.075
0.078
0.081
0.084
0.086
0.089
0.091
0.102
0.112
0.119
0.125
0.128
0.13
128.7
123.4
121
0.826
0.82
2.1
2.2
2.3
2.4
2.5
3
0.812
0.806
0.797
0.787
0.78
-66.7
-69.4
-72.3
-74.9
-77.8
-91.2
-105.2
-120.2
-136.2
-152.7
175.9
147.2
119.4
92.5
118.4
115.7
113.3
110.9
108.3
96.3
3.511
3.474
3.446
3.309
3.193
3.072
2.962
2.83
0.593
0.561
0.523
0.482
0.443
0.406
0.352
0.308
0.247
0.189
0.174
0.218
0.272
0.318
0.388
0.482
0.57
0.738
0.695
0.649
0.609
0.573
0.529
0.507
0.485
0.502
0.574
0.639
0.686
0.715
0.741
0.774
0.789
0.797
0.833
3.5
4
84.2
72.2
4.5
5
59.9
-2.6
-92.3
-103
-123
-142.4
-159.2
178.9
132.2
88.5
9.4
47.8
-10.4
-23.6
-36
9.0
6
2.555
2.295
2.072
1.922
1.78
25
8.1
7
3.6
0.129
0.123
0.123
0.132
0.134
0.136
0.137
0.137
0.131
0.125
0.121
0.117
7.2
8
-16.8
-36.5
-58.3
-79.6
-98.8
-118.1
-138.4
-158
-47.7
-52.7
-63.1
-75
6.3
7.8
9
5.7
7.1
10
11
12
13
14
15
16
17
18
65
5.0
6.9
42.1
1.576
1.388
1.236
1.094
0.926
0.761
0.634
0.549
4.0
6.4
23.9
-85.8
-97.7
-110.5
-123.3
-135.2
-145.5
-159
59.8
2.8
5.9
5.8
34.5
1.8
5.4
-12
9.3
0.8
4.9
-29.2
-43.9
-54.3
-65.8
-11.4
-26.3
-40.6
-55.4
-0.7
-2.4
-4.0
-5.2
4.4
-175.8
169.4
153.8
3.6
0.622
0.67
2.5
2.5
Freq
Fmin
GAMMA OPT
Rn/50
Ga
(GHz)
(dB)
Mag
Ang
(dB)
0.7
0.9
1.1
1.3
1.5
1.7
1.9
2
0.71
0.74
0.76
0.79
0.81
0.8
0.56
0.58
0.56
0.54
0.58
0.57
0.57
0.56
0.55
0.58
0.56
0.54
0.55
0.53
0.42
0.38
15.7
21.8
28.3
33.8
36.5
40
0.32
0.3
16.3
16.3
15.9
15.6
15.6
15.3
15.1
14.9
14.7
14.8
14.5
14.3
14.2
13.5
10.7
9.4
0.31
0.3
0.29
0.29
0.28
0.28
0.28
0.27
0.26
0.26
0.26
0.23
0.11
0.07
0.82
0.83
0.85
0.85
0.87
0.87
0.88
0.9
45.2
47.8
49.3
50.7
53.9
55.3
57.7
67.7
120.7
152.7
2.1
2.2
2.3
2.4
2.5
3
5
1.03
1.14
6
8
MGA-71543 Typical Scattering Parameters and Noise Parameters
TC = 25°C, Vds = 2.4 V, Vref = -0.6 V, Id = 10 mA, ZO = 50Ω
Freq
S11
S11
S21
S21
S12
S12
S22
S22
S21
Gmax RLin RLout Isolation
(GHz) Mag. Ang.
Mag. Ang.
Mag. Ang.
Mag. Ang.
(dB) (dB) (dB) (dB) (dB)
0.3
0.5
0.7
0.9
1.1
1.3
1.5
1.7
1.9
2
0.9
-11.5
-18.6
-25.7
-32.7
-39.4
-45.8
-52
5.023
4.993
4.919
4.83
169.8
162.7
156.3
150
0.024
0.029
0.034
0.041
0.047
0.053
0.059
0.065
0.07
23.3
32.4
38.3
40.9
41.3
40.5
39.1
37.2
35
0.608
0.599
0.597
0.595
0.589
0.584
0.578
0.571
0.563
0.558
0.553
0.549
0.543
0.538
0.531
0.499
0.461
0.42
-8.7
14.0
14.0
13.8
13.7
13.5
13.3
13.1
12.9
12.7
12.6
12.5
12.4
12.3
12.2
12.1
11.7
11.3
10.9
10.5
10.0
9.0
23.2
22.8
22.4
21.8
21.2
20.5
20.0
19.4
18.8
18.5
18.2
18.0
17.7
17.4
17.1
15.8
14.7
13.7
12.8
12.0
10.6
9.5
-0.9
-1.0
-1.1
-1.2
-1.3
-1.5
-1.6
-1.8
-1.9
-2.0
-2.1
-2.2
-2.3
-2.4
-2.5
-3.1
-3.7
-4.3
-4.9
-5.5
-6.1
-6.4
-6.8
-6.4
-5.1
-4.1
-3.4
-3.0
-2.7
-2.3
-2.1
-2.0
-1.6
-4.3
-4.5
-4.5
-4.5
-4.6
-4.7
-4.8
-4.9
-5.0
-5.1
-5.1
-5.2
-5.3
-5.4
-5.5
-6.0
-6.7
-7.5
-8.4
-9.2
-10.6
-11.9
-14.2
-17.0
-17.1
-14.0
-11.7
-10.2
-8.4
-6.5
-5.1
-4.3
-3.7
-32.4
-30.8
-29.4
-27.7
-26.6
-25.5
-24.6
-23.7
-23.1
-22.7
-22.5
-22.2
-21.9
-21.6
-21.4
-20.4
-19.7
-19.2
-18.7
-18.4
-18.1
-18.0
-18.1
-17.9
-17.1
-17.0
-16.8
-16.8
-16.8
-17.3
-17.7
-18.0
-18.3
0.892
0.884
0.873
0.859
0.845
0.832
0.816
0.801
0.793
0.784
0.776
0.767
0.757
0.749
0.701
0.655
0.607
0.567
0.533
0.493
0.476
0.458
0.48
-13.8
-19.1
-24.2
-29.1
-33.6
-37.8
-41.8
-45.7
-47.4
-49.2
-51
4.728
4.623
4.509
4.412
4.312
4.259
4.211
4.171
4.117
4.07
143.9
138
132.4
126.9
121.5
119
-58.1
-63.9
-66.8
-69.6
-72.4
-75.3
-78
0.073
0.075
0.078
0.08
33.9
32.7
31.6
30.3
29
2.1
2.2
2.3
2.4
2.5
3
116.4
113.7
111.2
108.7
106.2
94
-52.7
-54.5
-56
0.083
0.085
0.095
0.103
0.11
-80.9
-94.7
-108.9
-124.2
-140.4
-157.2
171.3
142.7
115.1
88.8
4.029
3.829
3.659
3.49
27.7
21.2
14.7
7.6
-64.4
-73.1
-82.2
-92.6
-103.3
-123.4
-143.1
-159.7
176.8
120.6
76.5
3.5
4
81.9
70
4.5
5
3.335
3.163
2.828
2.526
2.271
2.094
1.935
1.712
1.512
1.351
1.2
58
0.116
0.12
0.8
0.382
0.346
0.296
0.255
0.195
0.141
0.14
46.1
-6.3
6
23.9
0.124
0.126
0.124
0.128
0.139
0.142
0.145
0.145
0.145
0.137
0.131
0.126
0.122
-18.3
-30.1
-41.4
-47.3
-58.9
-71.7
-83.5
-96.3
-109.7
-123.1
-135.2
-145.7
-159.2
7
2.9
8.0
8
-17
7.1
8.3
9
-36.3
-57.6
-78.3
-97.2
-116.2
-136.2
-155.6
-173.3
171.8
156
6.4
7.6
10
11
12
13
14
15
16
17
18
0.558
0.627
0.675
0.706
0.732
0.767
0.783
0.792
0.828
62.2
5.7
7.4
39.9
0.2
4.7
7.0
22.1
0.26
50.1
3.6
6.5
4.4
0.308
0.379
0.473
0.558
0.609
0.656
26.4
2.6
6.0
-13.3
-30.2
-44.7
-55.1
-66.5
3.1
1.6
5.6
1.022
0.849
0.713
0.622
-15.8
-29.5
-43
0.2
5.1
-1.4
-2.9
-4.1
4.3
3.4
-57.3
3.3
Freq
Fmin
GAMMA OPT
Rn/50
Ga
(GHz)
(dB)
Mag
Ang
(dB)
0.7
0.9
1.1
1.3
1.5
1.7
1.9
2
0.63
0.66
0.68
0.7
0.53
0.54
0.55
0.52
0.55
0.56
0.53
0.53
0.52
0.54
0.53
0.51
0.52
15.3
21.4
28.5
33.8
37
0.27
0.26
0.26
0.25
0.25
0.25
0.24
0.23
0.23
0.23
0.22
0.22
0.22
0.2
17.2
17.1
16.9
16.5
16.4
16.2
15.8
15.6
15.4
15.4
15.2
15
0.72
0.72
0.73
0.74
0.76
0.78
0.78
0.79
0.8
39.9
45.5
48.3
49.6
50.7
54
2.1
2.2
2.3
2.4
2.5
3
55.6
57.6
67.5
121.3
155
14.9
14.2
11.2
10
0.82
0.94
1.05
0.5
5
0.38
0.34
0.1
6
0.07
9
MGA-71543 Typical Scattering Parameters and Noise Parameters
TC = 25°C, Vds = 2.5 V, Vref = -0.5 V, Id = 20 mA, ZO = 50Ω
Freq
S11
S11
S21
S21
S12
S12
S22
S22
S21
Gmax RLin RLout Isolation
(GHz) Mag. Ang.
Mag. Ang.
Mag. Ang.
Mag. Ang.
(dB) (dB) (dB) (dB) (dB)
0.3
0.5
0.7
0.9
1.1
1.3
1.5
1.7
1.9
2
0.889
0.88
-12.1
-19.5
-27
5.952
5.901
5.803
5.684
5.548
5.407
5.26
169.3
162
0.023
0.027
0.032
0.037
0.043
0.049
0.055
0.06
22.8
32
0.541
0.532
0.531
0.528
0.523
0.518
0.511
0.505
0.497
0.493
0.488
0.483
0.477
0.473
0.467
0.435
0.399
0.36
-9
15.5
15.4
15.3
15.1
14.9
14.7
14.4
14.2
14.0
13.8
13.7
13.6
13.5
13.4
13.3
12.7
12.3
11.8
11.3
10.8
9.8
23.8
23.3
22.9
22.3
21.6
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
13.2
12.4
11.1
9.9
-1.0
-1.1
-1.2
-1.3
-1.5
-1.7
-1.8
-2.0
-2.2
-2.3
-2.4
-2.5
-2.7
-2.8
-2.9
-3.6
-4.2
-4.9
-5.5
-6.1
-6.7
-7.0
-7.2
-6.7
-5.3
-4.2
-3.5
-3.1
-2.8
-2.3
-2.2
-2.1
-1.7
-5.3
-5.5
-5.5
-5.5
-5.6
-5.7
-5.8
-5.9
-6.1
-6.1
-6.2
-6.3
-6.4
-6.5
-6.6
-7.2
-8.0
-8.9
-9.8
-10.7
-12.2
-13.6
-16.5
-20.1
-18.9
-14.4
-11.8
-10.3
-8.5
-6.6
-5.2
-4.5
-3.8
-32.8
-31.4
-29.9
-28.6
-27.3
-26.2
-25.2
-24.4
-23.7
-23.5
-23.2
-22.9
-22.6
-22.4
-22.2
-21.2
-20.4
-19.8
-19.3
-18.9
-18.5
-18.1
-18.1
-17.5
-16.7
-16.5
-16.3
-16.3
-16.3
-16.8
-17.3
-17.6
-18.0
-14.1
-19.6
-24.7
-29.7
-34.2
-38.4
-42.4
-46.2
-47.9
-49.6
-51.5
-53
0.87
155.3
148.8
142.5
136.5
130.6
125
38.2
40.9
41.5
40.9
39.6
38
0.858
0.842
0.826
0.81
-34.3
-41.2
-47.9
-54.3
-60.7
-66.6
-69.6
-72.5
-75.4
-78.3
-81
0.792
0.774
0.765
0.755
0.746
0.736
0.724
0.716
0.664
0.616
0.566
0.528
0.495
0.46
5.126
4.99
119.5
116.9
114.3
111.5
109
0.065
0.067
0.069
0.072
0.074
0.076
0.078
0.087
0.095
0.102
0.108
0.113
0.119
0.124
0.125
0.133
0.146
0.15
36.1
35
4.922
4.857
4.797
4.729
4.668
4.612
4.34
2.1
2.2
2.3
2.4
2.5
3
34
32.9
31.8
30.6
29.4
23.6
17.8
11.3
5.1
106.5
103.9
91.7
-54.7
-56.2
-64.1
-72.4
-81.1
-91.4
-102.1
-122.3
-142.5
-158.6
175.9
106.8
65.3
-84
-98
3.5
4
-112.4
-128
-144.5
-161.5
166.9
138.5
111.1
85.4
4.107
3.886
3.686
3.473
3.078
2.737
2.452
2.252
2.075
1.836
1.626
1.457
1.299
1.111
0.93
79.7
67.9
4.5
5
56.1
0.324
0.291
0.245
0.208
0.15
44.5
-1.3
6
22.8
-12.5
-24.1
-35.3
-42.2
-54.9
-68.5
-81
7
0.448
0.436
0.462
0.544
0.617
0.668
0.7
2.4
8.7
8
-17.1
-36
7.8
8.8
9
0.099
0.114
0.191
0.256
0.305
0.377
0.469
0.552
0.599
0.645
7.1
8.1
10
11
12
13
14
15
16
17
18
59.7
-56.8
-77.2
-95.6
-114.4
-134.1
-153.3
-170.8
174.2
158.3
6.3
7.9
38.1
5.3
7.5
20.6
0.153
0.153
0.153
0.144
0.137
0.132
0.126
41.5
4.2
7.1
3.1
-94.4
-108.4
-122.2
-134.6
-145.3
-159
19.4
3.3
6.6
0.728
0.763
0.78
-14.4
-31.2
-45.5
-55.8
-67.1
-2.4
2.3
6.2
-19.6
-32.5
-45.4
-59
0.9
5.8
-0.6
-2.1
-3.2
5.0
0.789
0.825
0.788
0.691
4.1
4.1
Freq
Fmin
GAMMA OPT
Rn/50
Ga
(GHz)
(dB)
Mag
Ang
(dB)
0.7
0.9
1.1
1.3
1.5
1.7
1.9
2
0.59
0.64
0.66
0.68
0.68
0.69
0.72
0.73
0.74
0.75
0.76
0.77
0.79
0.82
0.93
1.06
0.52
0.53
0.53
0.51
0.54
0.54
0.51
0.51
0.5
15.7
21.7
28.9
34.2
38.5
40.8
46.4
48.8
50.5
52.4
55.4
56.3
59
0.25
0.24
0.24
0.23
0.23
0.23
0.22
0.22
0.21
0.21
0.2
18.1
17.9
17.7
17.3
17.2
17
16.5
16.4
16.2
16.1
15.9
15.6
15.6
14.7
11.7
10.5
2.1
2.2
2.3
2.4
2.5
3
0.51
0.51
0.48
0.2
0.5
0.2
0.47
0.34
0.31
68.6
125.1
160.6
0.18
0.09
0.07
5
6
10
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
S21
S21
S12
S12
S22
S22
S21
Gmax RLin RLout Isolation
(GHz) Mag. Ang.
Mag. Ang.
Mag. Ang.
Mag. Ang.
(dB) (dB) (dB) (dB) (dB)
0.3
0.5
0.7
0.9
1.1
1.3
1.5
1.7
1.9
2
0.889
0.88
-12.3
-19.8
-27.4
-34.9
-41.9
-48.7
-55.2
-61.6
-67.6
-70.6
-73.5
-76.3
-79.4
-82.2
-85.2
-99.3
-113.8
-129.5
-146
6.174
6.117
6.012
5.885
5.74
169.2
161.8
155.1
148.5
142.1
136
0.022
0.025
0.029
0.035
0.04
22.3
31.6
37.9
40.9
41.7
41.4
40.2
38.7
37
0.508
0.501
0.499
0.497
0.493
0.488
0.483
0.477
0.47
-8.9
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
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
-1.0
-1.1
-1.2
-1.3
-1.5
-1.7
-1.9
-2.1
-2.3
-2.4
-2.5
-2.6
-2.7
-2.9
-3.0
-3.7
-4.3
-5.1
-5.7
-6.2
-6.8
-7.0
-7.2
-6.7
-5.3
-4.1
-3.5
-3.0
-2.7
-2.3
-2.1
-2.0
-1.6
-5.9
-6.0
-6.0
-6.1
-6.1
-6.2
-6.3
-6.4
-6.6
-6.6
-6.7
-6.8
-6.9
-7.0
-7.1
-7.7
-8.4
-9.3
-10.2
-11.1
-12.5
-13.9
-16.7
-20.4
-19.9
-15.0
-12.3
-10.7
-8.7
-6.7
-5.3
-4.5
-3.9
-33.2
-32.0
-30.8
-29.1
-28.0
-26.7
-25.8
-25.2
-24.4
-24.2
-23.9
-23.6
-23.3
-23.1
-22.9
-21.8
-21.0
-20.4
-19.9
-19.5
-18.9
-18.4
-18.3
-17.6
-16.7
-16.4
-16.2
-16.1
-16.1
-16.5
-17.0
-17.3
-17.7
-13.7
-19.1
-24.2
-29
0.87
0.857
0.841
0.823
0.807
0.788
0.769
0.76
5.589
5.435
5.289
5.145
5.072
5.003
4.93
0.046
0.051
0.055
0.06
-33.4
-37.5
-41.3
-45
130.2
124.5
119
116.3
113.7
111
0.062
0.064
0.066
0.068
0.07
36.1
35.1
34.2
33.1
32
0.466
0.462
0.458
0.452
0.448
0.442
0.413
0.38
-46.5
-48.2
-50
2.1
2.2
2.3
2.4
2.5
3
0.75
0.739
0.73
4.865
4.801
4.739
4.447
4.197
3.963
3.751
3.53
108.4
105.9
103.3
91
-51.4
-53
0.718
0.709
0.656
0.608
0.559
0.521
0.49
0.072
0.081
0.089
0.095
0.101
0.106
0.114
0.12
30.9
25.5
20
-54.5
-61.9
-69.7
-77.9
-87.7
-98
3.5
4
79
67.3
14
0.344
0.31
4.5
5
55.6
8.2
-163
44.1
2
0.278
0.236
0.201
0.146
0.096
0.101
0.177
0.244
0.293
0.366
0.461
0.545
0.595
0.641
6
0.457
0.447
0.436
0.462
0.546
0.621
0.672
0.705
0.733
0.768
0.786
0.794
0.83
165.4
137.1
109.8
84.5
3.124
2.776
2.484
2.28
22.5
-8.6
-117.5
-137.1
-151.4
-173.8
112
7
2.2
-19.8
-30.9
-37.8
-50.8
-64.7
-77.6
-91.3
-105.8
-119.7
-132.5
-143.6
-157.4
8.9
8
-17.2
-36
0.122
0.132
0.146
0.152
0.155
0.157
0.157
0.149
0.141
0.136
0.131
7.9
9
7.2
8.2
10
11
12
13
14
15
16
17
18
59.1
2.102
1.861
1.649
1.478
1.32
-56.7
-77
6.5
8.0
37.8
66.8
5.4
7.6
20.3
-95.4
-114.1
-133.9
-153.1
-170.6
174.5
158.5
42.3
4.3
7.2
2.9
19.8
3.4
6.8
-14.6
-31.3
-45.7
-56.1
-67.4
-2.2
2.4
6.4
1.129
0.946
0.801
0.703
-19.1
-32.1
-45.1
-58.8
1.1
6.0
-0.5
-1.9
-3.1
5.2
4.3
4.3
Freq
Fmin
GAMMA OPT
Rn/50
Ga
(GHz)
(dB)
Mag
Ang
(dB)
0.7
0.9
1.1
1.3
1.5
1.7
1.9
2
0.69
0.73
0.73
0.77
0.77
0.8
0.56
0.57
0.56
0.54
0.58
0.57
0.55
0.54
0.54
0.54
0.54
0.52
0.52
0.49
0.37
0.35
17.3
23.9
30.8
36.5
40.7
43.9
49.7
52.1
54.3
55.5
59.3
61
0.32
0.3
18.5
18.3
18
0.31
0.3
17.6
17.6
17.3
16.9
16.7
16.5
16.4
16.2
16
0.29
0.29
0.28
0.27
0.27
0.26
0.26
0.25
0.25
0.22
0.1
0.83
0.85
0.86
0.9
2.1
2.2
2.3
2.4
2.5
3
0.91
0.91
0.93
0.98
1.19
1.35
63.2
74.7
136
15.8
15
5
11.9
10.7
6
172.8
0.08
11
Part Number Ordering Information
Part Number
No. of Devices Container
MGA-71543-TR1G
MGA-71543-TR2G
MGA-71543-BLKG
3000
10000
100
7" Reel
13" Reel
Antistatic bag
Package Dimensions Outline 43
SOT-343 (SC70 4-lead)
Recommended PCB Pad Layout for
Avago’s SC70 4L/SOT-343 Products
1.30 (.051)
BSC
1.30
(0.051)
1.00
(0.039)
HE
E
2.00
(0.079)
0.60
(0.024)
1.15 (.045) BSC
b1
0.9
(0.035)
D
1.15
(0.045)
mm
(inches)
Dimensions in
A
A2
A1
b
C
L
DIMENSIONS (mm)
SYMBOL
E
D
HE
A
A2
A1
b
MIN.
1.15
1.85
1.80
0.80
0.80
0.00
0.15
0.55
0.10
0.10
MAX.
1.35
2.25
2.40
1.10
1.00
0.10
0.40
0.70
0.20
0.46
NOTES:
1. All dimensions are in mm.
2. Dimensions are inclusive of plating.
3. Dimensions are exclusive of mold ꢀash & metal burr.
4. All speciꢁcations comply to EIAJ SC70.
5. Die is facing up for mold and facing down for trim/form,
ie: reverse trim/form.
b1
c
L
6. Package surface to be mirror ꢁnish.
12
Device Orientation
REEL
4 mm
71x
8 mm
71x
CARRIER
TAPE
71x
71x
USER
TOP VIEW
END VIEW
FEED
DIRECTION
COVER TAPE
Tape Dimensions For Outline 4T
P
2
P
P
D
o
E
F
W
C
D
1
t (CARRIER TAPE THICKNESS)
1
T (COVER TAPE THICKNESS)
t
K
10 MAX.
10 MAX.
o
A
B
o
o
DESCRIPTION
SYMBOL
SIZE (mm)
2.40 0.10
2.40 0.10
1.20 0.10
4.00 0.10
1.00 + 0.25
SIZE (INCHES)
CAVITY
LENGTH
WIDTH
DEPTH
PITCH
A
B
K
P
0.094 0.004
0.094 0.004
0.047 0.004
0.157 0.004
0.039 + 0.010
o
o
o
BOTTOM HOLE DIAMETER
D
1
PERFORATION
DIAMETER
PITCH
POSITION
D
1.55 0.10
4.00 0.10
1.75 0.10
0.061 + 0.002
0.157 0.004
0.069 0.004
P
E
o
CARRIER TAPE
COVER TAPE
DISTANCE
WIDTH
THICKNESS
W
8.00 + 0.30 - 0.10 0.315 + 0.012
t
0.254 0.02
0.0100 0.0008
1
WIDTH
TAPE THICKNESS
C
T
5.40 0.10
0.062 0.001
0.205 + 0.004
0.0025 0.0004
t
CAVITY TO PERFORATION
(WIDTH DIRECTION)
F
3.50 0.05
0.138 0.002
CAVITY TO PERFORATION
(LENGTH DIRECTION)
P
2
2.00 0.05
0.079 0.002
13
The MGA-71543 is a small LNA/
Bypass Switch MMIC that pro-
vides a low noise figure, a high
gain and high third order input
intercept point (IIP3) ideal for the
first stage LNA of PCS CDMA and
W-CDMA.
ing the same matching network at
both states (LNA State and Bypass
State). This makes the MGA-71543
ideal for use between duplexers
and image reject filters.
Designing with MGA-71543,
a Low Noise Amplifier with
Built-in Mitigated Bypass
Switches
The MGA-71543 offers an inte-
grated solution of LNA with
Introduction
The MGA-71543 is a single stage
GaAs RFIC low noise amplifier
with an integrated bypass switch
(Figure 1).
adjustable IIP3. The IIP3 can be
fixed to a desired current level for
the receiver’s linearity require-
ments. The LNA has a bypass
switch function, which sets the
current to zero (2 µA) and pro-
vides low insertion loss when in
bypass mode. The bypass mode
also boosts dynamic range when
high level signal is being received.
Device Description
The MGA-71543 is a single stage
GaAs IC with a built-in bypass
switch housed in a SOT-343
package. The device diagram is
shown in Figures 1 and 2.
RF IN
RF OUT
Bypass Mode
RF in
RF out
Amplifier Mode
Figure 2. Simplified Schematic.
Switch & Bias
Many CDMA systems operate
20% LNA and 80% bypass mode.
For example, with the bypass
draw of zero and LNA of 10 mA,
the MGA-71543 allows an average
of only 2 mA current.
Figure 1. MGA-71543 Functional Diagram.
This application note describes a
low noise amplifier design using
Avago Technologies’ MGA-71543.
+
+
–
–
Control
Input
&
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.
The MGA-71543 is designed for
receivers and transmitters operat-
ing from 100 MHz to 6 GHz, mainly
for CDMA applications i.e. IS-95
CDMA1900, CDMA800 and
Output
& V
d
DC
ref
Gain FET
GND
& Vc
GND
W-CDMA. It can be used as a first
stage (Q1) in a CDMA PCS
Figure 3. Bypass State Duplicates the In and
Out Impedance.
1900 MHz application currently
filled by a single transistor. Its
bypass capability adds features
over the single transistor solution
with no performance loss. The
device can also be used as a driver
amplifier for CDMA800.
Biasing
This IC can be biased like a
depletion mode discrete GaAsFET.
Two kinds of passive biasing can
be used: gate bias (Figure 4) and
source resistor bias method
(Figure 6).
The MGA-71543 features a mini-
mum noise figure of 0.8 dB and
16 dB available gain. 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.
The purpose of the switch feature
is to prevent distortion of high
signal levels in receiver applica-
tions by bypassing the amplifier.
Furthermore, zero current draw,
when in bypass mode, saves
current thus improving battery
life.
Gate Bias
Pins 1 and 4 (Figure 4) are DC
grounded and a negative bias
voltage is applied to Pin 3 in
addition to the power supply (2.7
or 3V) applied to Pin 2. This
method of biasing has the advan-
tage of minimizing parasitic
source inductance because the
device is directly DC and RF
grounded.
When set into the bypass mode,
both input and output are inter-
nally matched through a mitigative
circuit. This circuit draws no
current (less than 2 µA), yet
duplicates the in and out imped-
ance of the LNA (Figure 3). This
allows the system user to have
minimum mismatch change from
LNA to Bypass mode, thus allow-
The internally matched switching
circuit provides a 20 dB gain step
and also reduces gain ripple and
mismatch in system usage.
14
3
4
1
2
Input
The current of the amplifier (Id) is
set by the value of the resistor
Rbias. This resistor (Rbias) is
The approximate value of the
external resistor, R , may also
bias
be calculated from:
connected at Pin 4 as shown in
Figure 6 and RF bypassed. At least
two capacitors in parallel are
recommended for RF bypassing.
One capacitor (100 pF) for high
frequency bypassing and a second,
large value capacitor for better
low frequency bypassing. The
large value capacitor is added in
parallel to improve the IP3
Output
& V
964
I
V
ref
d
R
=
(1 – 0.112 √ I )
d
bias
d
Figure 4. Gate Bias Method.
where Rbias is in ohms and Id is the
desired device current in mA.
The DC supply at the input
terminal (Vref) can be applied
through a RF choke (inductor).
A simple method for DC ground-
ing the input terminal (Pin 3) is to
use a shunt inductor that is also
part of the noise-matching
network.
The voltage at Vref (Pin 3) with
respect to ground determines the
device current, Id. A plot of typical frequency mixing terms that are
Id vs. Vref is shown in Figure 5.
Maximum device current
(approximately 60 mA) occurs at
Vref = 0 (i.e. Vgs= 0).
because they help ground the low
generated during a two tones test
(i.e. f1 – f2 term which is the
separation of the two tones
usually 1 to a few MHz) and thus
improve the IIP3.
Adaptive Biasing
For applications in which input
power levels vary over a wide
range, it may be useful to dynami-
cally adapt the bias of the
When using the gate biasing
method, the bypass mode is
activated when Vds = 0V and
Vref < -2V.
3
1
Input
MGA-71543 to match the signal
level. A sensor senses the signal
level at some point in the system
(usually in the baseband circuitry)
and automatically adjusts the bias
current of the amplifier accord-
ingly. The main advantage of
adaptive biasing is conservation of
supply current (longer battery life)
by using only the amount of
current necessary to handle the
input signal without distortion.
Output
& V
4
2
70
60
50
40
30
20
10
0
d
R
bias
Figure 6. Source Resistor Bias Method.
Maximum current (about 60 mA)
occurs when Rbias=0.
Adaptive biasing of the
A plot of typical Id vs. Rbias is
shown in Figure 7.
-1
-0.8
-0.6
(V)
-0.4
-0.2
MGA-71543 can be accomplished
by simple digital means (Figure 8).
For instance simple electronic
switches can be used to control
the value of the source resistor in
discrete increment.
V
ref
60
50
Figure 5. Device Current vs. Vref
.
This kind of biasing would not
40
30
20
usually be used unless a negative
supply voltage was readily
available.
3
2
DC
Return
Path
1
4
Source Resistor Bias
10
0
This is the recommended method
because it only requires one
(positive) power supply. As shown
in Figure 6, Pin 3 is DC grounded
and pins 1 and 4 are RF bypassed.
0
20
40
60
80 100 120 140
R
(Ω)
bias
Digital
Control
Figure 7. Device Current vs. Rbias
.
Figure 8. Adaptive Bias Control using Digital
Method.
15
Applying the Device Voltage
Common to all methods of
Controlling the Switch
constants of the external bias
circuit components (current
setting resistor and bypass
capacitors). These external
components increase the switch-
ing time to around 100ns. Further-
The device current controls the
state of the MGA-71543 (amplifier
or bypass mode). For device
currents greater than 3 mA, it
functions as an amplifier. If a
lower current is drawn, the gain of more, the switching ON time is
the amplifier is significantly
reduced and the performance will
degrade. If the device current is
biasing, voltage Vd is applied to
the MGA-71543 through the RF
output connection (Pin 2). The
bias line is capacitively bypassed
to keep RF from the DC supply
lines and prevent resonant dips or
peaks in the response of the
amplifier. Where practical, it may
slightly lower (faster) than the
switching OFF time (i.e. It
switches on faster).
be cost effective to use a length of set to zero, the MGA-71543 is
high impedance transmission line
switched into a bypass mode in
which the signal is routed around
the amplifier with a loss of about
5.6 dB.
Thermal issues
λ
(usually / line) in place of the
RFC.
4
The Mean Time To Failure (MTTF)
of semiconductors is inversely
proportional to the operating
temperature.
When using the gate bias method,
the applied device voltage, Vds, is
The simplest way of switching the
equal to voltage Vd (at pin 2) since MGA-71543 to the bypass mode is
When biased at 3V and 10 mA for
LNA applications, the power
Vs is zero.
to open-circuit the terminals at
Pins 1 and 4. The bypass mode is
also set by increasing the source
resistance Rbias to greater than
1 MΩ. With the DC ground con-
nection open, the internal control
circuit of the MGA-71543 auto-
switches from amplifier mode into
a bypass mode and the device
current drops to near zero. Typical
bypass mode current is 2 µA.
dissipation is 3V x 10 mA = 30 mW.
The temperature increment from
the RFIC channel to its case is
then 30 mW x θjc = 0.030 watt x
240°C/watt = 7.2°C. Subtracting
the channel-to-case temperature
rise from the suggested maximum
junction temperature of 150°C, the
resulting maximum allowable case
temperature is 143°C.
V
~ +2.5 V
d
RF
Output
2
1
71
RF
Input
3
4
Vref = -0.5 V
Figure 9. DC Schematic for Gate Bias.
The worst case thermal situation
occurs when the MGA-71543 is
operated at its maximum operat-
ing conditions in an effort to
maximize output power or achieve
minimum distortion. A similar
calculation for the maximum
operating bias of 4.2 volts and
50 mA yields a maximum allow-
able case temperature of 100°C.
(i.e. 210 mW x θjc = 0.210 watt x
240°C/watt = 50.4°C
3
2
For source resistor biasing
method, the applied device
1
4
voltage, Vds, is Vd – Vs. The bias
control voltage is Vs (Pin 4) which
is set by the external bias resistor.
A source resistor bias circuit is
shown in Figure 10.
R
bias
Bypass Switch
Enable
Figure 11. MGA-71543 Amplifier/Bypass State
Switching.
V
= +3 V
d
150°C – 50.4°C = 100°C.)
This calculation assumes the
worst case of no RF power being
extracted from the device. When
operated in a saturated mode,
both power-added efficiency and
the maximum allowable case
temperature will increase.
A digital switch can be used to
control the amplifier and Bypass
State as shown in Figure 11.
RF
Output
2
1
71
RF
Input
3
4
Switching Speed
The speed at which the
R
bias
MGA-71543 switches between
states is extremely fast. The
intrinsic switching speed is
typically around 10 ns. However in
practical circuits, the switching
speed is limited by the time
Note: “Case” temperature for
Figure 10. DC Schematic for Source Bias.
surface mount packages such as
the SOT-343 refers to the interface
between the package pins and the
16
mounting surface, i.e., the tem-
perature at the PCB mounting
pads. The primary heat path from
the RFIC chip to the system
heatsink is by means of conduc-
tion through the package leads
and ground vias to the ground
plane of the PCB.
RF bypass
For layouts using the source
LNA Application
In the following sections the LNA
resistor method of biasing, both of design is described in a more
the ground terminals of the general way. Sample evaluation
MGA-71543 must be well bypassed boards for 1900 MHz and 800 MHz
to maintain device stability.
Beginning with the package pad
print in Figure 12, and RF layout
similar to the one shown in
Figure 13 is a good starting point
for using the MGA-71543 with
capacitor-bypassed ground
terminals. It is a best practice to
use multiple vias to minimize
overall ground path inductance.
are shown in a table (Table 1) and
the appropriate board diagram is
shown (Figures 22 and 23). A
second smaller size board is also
shown (Figures 25 and 26) with
the corresponding table (Table 2).
The smaller board is an example
of reducing the size of the layout,
more suitable for handset manu-
facturers. For low noise amplifier
application, the LNA is typically
biased 6 to 20 mA.
Grounding Consideration in
PCB Layout
The MGA-71543 requires careful
attention during grounding. Any
device with gain can be made to
oscillate if feedback is added.
Since poor grounding adds series
feedback, it can cause the device
to oscillate. Poor grounding is one
of the most common causes of
oscillation in RF components.
Careful attention should be used
when RF bypassing the ground
terminals when the device is
biased using the source resistor
method.
The MGA-71543 is a conditionally
stable device, therefore, the
proper input and output loads
must be presented in addition to
properly RF grounding the device.
Please refer to the stability section
for tips on preventing oscillation.
The LNA can be switched ON or
OFF by a simply varying the
Size 0402
71
recommended
for the bypass
capacitors
Package Footprint
resistor to its ground leads as
described in previous sections.
The PCB pad print for the minia-
ture, 4-lead SOT-343 (SC70)
package is shown in Figure 12.
Figure 13. Layout for RF Bypass.
Matching Networks for the LNA
PCB Materials
1.30
0.051
0.031 inches thick of FR-4 or G-10
type dielectric materials are
typical choices for most low cost
wireless applications using single
layer printed boards. As an
alternative, a Getek material with
a multilayer printed circuit board
can be used for a smaller size
board, where:
Γ
Γ
L
in
1.00
0.039
Input
Output
Match
LNA
Match
50Ω
50Ω
2.00
0.079
0.60
0.024
Γ
Γ
opt
s
or
opt
Γ
Figure 14. Input and Output Matching
Terminology.
1st layer: RF routing layer
2nd layer: Ground layer
0.9
0.035
3rd layer: Power (DC) routing layer
4th layer: Other RF routing layer
The input matching network
determines the noise figure and
1.15
0.045
return loss (S11) of our amplifier.
The output-matching network
determines the IP3 and output
return loss (S22). Furthermore,
both input and output matching
networks influence the gain. The
best gain (Maximum Available
Gain-MAG) and lowest input
return loss is obtained when both
the input and output are conju-
mm
The spacing between the layers is
as follows:
Dimensions in
inches
Between the 1st and 2nd: 0.005"
Between the 2nd and 3rd: 0.020"
Between the 3rd and 4th: 0.005"
Figure 12. Recommended PCB Pad Layout for
Avago’s SC70 4L/SOT-343 Products.
The layout is shown with a
footprint of the MGA-71543
superimposed on the PCB pads for
reference.
17
gately matched to 50Ω. For
satisfied. However, this might
affect our return loss at the input
because it creates more mismatch
(at the input) and there is less
power transfer to the LNA.
Design for Stability
instance at the input, when Γs =
Γin* the highest gain with the best
power transfer is obtained where
Γs is the source reflection coeffi-
cient presented to the input pin.
The main potential for oscillation
with the MGA-71543 is improper
grounding and/or improper RF
bypass capacitors. Any device
Therefore the best solution should with gain can be made to oscillate
be the one that gives a reasonable
input return loss with the best
noise figure associated to it.
if feedback is added. Proper
For best noise, Γs = ΓOPT, where
grounding may be achieved by
minimizing inductance paths to
the ground plane. Passive compo-
nents should be chosen for high
frequency operation. Bias circuit
self resonance due to inadequate
bypass capacitors or inadequate
grounding may cause high fre-
quency, out of band, instability.
Smaller 0402 size bypass capaci-
tors are recommended to mini-
mize parasitic inductance and
resonance of the bias circuit.
ΓOPT is the source reflection
coefficient for optimum NF match
and is determined empirically
(experimentally). However, an
input match where Γs = ΓOPT does
not necessarily yield the best
return loss nor the best gain.
The noise figure F of an amplifier
is determined by the input match-
ing circuit. The output matching
does not affect the noise (has a
significantly minimal effect on
noise figure).
Input Match
To obtain the best noise match a
simple two elements match is
used at the input of the device.
Using the ΓOPT magnitude and
phase at the frequency of interest,
the noise match is done. The
topology that has a capacitor to
ground is ignored because it does
not allow the input to be DC
grounded as is required by the
source bias method. Therefore the
series-L-shunt-L topology is used.
The final values of the noise
matching circuit (input match)
was a result of some more empiri-
cal tuning in the lab that was a
compromise between the various
important parameters. Typical
Gain, noise and stability circles
are shown in Figures 17 – 20. Most
simulations were done using
Avago-EEsof’s Advanced Design
System (ADS).
To allow flexibility for the de-
signer, the LNA is intended to be
used with external matching
network at the input.
Statistical Parameters
The noise performance of a two
port can be determined if the
values of the noise parameters
Fmin, rn = Rn/50 and ΓOPT are
known (shown in the datasheet),
where these parameters are given
by:
Several categories of parameters
appear within the electrical
specification portion of the
MGA-71543 datasheet. Parameters
may be described with values that
are either “minimum or maxi-
mum”, “typical” or “standard
deviations”.
2
4r |Γ – ΓOPT
|
n
s
F
= F
+
min
50
(1 – |Γ |2) |1 + ΓOPT
|
2
The values for parameters are
based on comprehensive product
characterization data, in which
automated measurements are
made on a statistically significant
number of parts taken from
nonconsecutive process lots of
semiconductor wafers. The data
derived from product character-
ization tends to be normally
distributed, e.g. fits the standard
bell curve.
s
2
|1 + ΓOPT
|
r = (F – F
n
50
min)
2
4|ΓOPT
|
ZOPT – ZO
ZOPT + ZO
ΓOPT
=
Where
min is the minimum noise figure
F
that is obtained when Γs = ΓOPT
.
Stability
Rn is the noise resistance that
indicates the sensitivity of the
noise performance.
A stable circuit is a circuit that
does not oscillate. Oscillation can
take the form of spurious signal
and noise generation. This usually
results in changes in DC operating
point (bias level fluctuates). The
oscillations can be triggered by
changes in the source (input
match), load (output match), bias
level and last but not least:
improper grounding.
68%
Γs is the source reflection coeffi-
cient presented to the input pin.
95%
99%
ΓOPT is the source reflection
coefficient for optimum NF match.
-3σ -2σ -1σ Mean (µ) +1σ +2σ +3σ
Any change in Γs affects the noise
figure of our amplifier. To obtain
the best noise figure, the following
relation: Γs = ΓOPT must be
(typical)
Parameter Value
Figure 15. Normal Distribution Curve.
18
Parameters considered to be the
most important to system perfor-
mance are bounded by minimum
or maximum values. For the
To assist designers in optimizing
not only the immediate amplifier
circuit using the MGA-71543, but
to also evaluate and optimize
Phase Reference Planes
The positions of the reference
plane used to specify S-parameters
and Noise Parameters for the
MGA-71543 are shown in
MGA-71543, these parameters are: tradeoffs that affect a complete
Vref test, NFtest,Gatest,IIP3 test,and
ILtest. Each of the guaranteed
parameters is 100% tested as part
of the normal manufacturing and
test process.
wireless system, the standard
deviation (σ) is provided for
many of the Electrical Specifica-
tion parameters (at 25°C). The
standard deviation is a measure of circuit.
the variability about the mean. It
will be recalled that a normal
Figure 16. As seen in the illustra-
tion, the reference planes are
located at the point where the
package leads contact the test
Values for most of the parameters
in the table of Electrical Specifica- distribution is completely de-
Reference Planes
tions that are described by typical scribed by the mean and standard
data are the mathematical mean
(µ), of the normal distribution
taken from the characterization
data. For parameters where
measurements or mathematical
averaging may not be practical,
such as S-parameters or Noise
parameters and the performance
curves, the data represents a
nominal part taken from the
center of the characterization
distribution. Typical values are
intended to be used as a basis for
electrical design.
deviation.
Standard statistics tables or
calculations provide the probabil-
ity of a parameter falling between
any two values, usually symmetri-
cally located about the mean.
Referring to Figure 15 for
example, the probability of a
parameter being between 1σ is
68.3%; between 2σ is 95.4%; and
between 3σ is 99.7%.
Test Circuit
Figure 16. Phase Reference Planes.
19
Demonstration Board
Source unstable
Source stability circle
Source stable
G = 18.8 dB
Load stability circle
NF = 0.75 dB
Load unstable
region
G = 17.8 dB
G = 16.8 dB
Gain Circles
Noise Circles
Load stable
region
G = 15.8 dB
G = 14.8 dB
NF = 0.95 dB
NF = 1.15 dB
NF = 1.35 dB
NF = 1.55 dB
Figure 18. Gain, Noise and Stability Circles.
Figure 19. Noise Circles F = 1900 MHz,
Step Size: 0.2 dB.
Figure 20. Gain Circle F = 1900 MHz,
Step Size: 1.0 dB.
Figure 21. Load and Source Stability Circles.
V
d
+3.0V
C11
C10
L3
RF
Output
C9
R4
C4
C5
1
2
4
71
RF
3
L1
Input
C1
C8
C6
C7
L2
C2
SW1
SW2
R3
R1
R2
Figure 22. Schematic Diagram of Evaluation Board Amplifier.
20
Agilent
MGA-71543
Eval Circuit
V
d
GND
C11
C10
L3
C4
C5
R4
C8
OUT
C9
C6
IN
L1
L2
C1
C7
C2
R1
R3
R2
Vc
EB 7/00
REV 2
Figure 23. Amplifier Evaluation Circuit with Component Designators. Actual board size is 1.1 x 1.3 inches, 0.031 inches thick.
Board Designation
Description
Part Number
Package
PCS-1900
800 MHz
71
DUT[1]
100 pF
100 pF
47 pF
DUT[1]
8.2 pF
100 pF
2.7 pF
0.01 µF
18 nH
33 nH
33 nH
51Ω
MGA-71543
SOT-343 (4 lead SC-70 package)
Size 0402
C1
C2, C5, C6, C7, C10
Size 0402
C9
Size 0402
C4, C8, C11
0.01 µF
1.5 nH
2.7 nH
3.9 nH
51Ω
Size 0603 or 0402
Size 0402
L1
TOKO LL1005
TOKO LL1005
TOKO LL1005
L2
Size 0402
L3
Size 0402
R1
Size 0402
R2
115Ω
115Ω
18 nH
60Ω
Size 0805 (for 6mA Bias)
Size 0805 (Jumper)/ Size 0603 (inductor)
Size 0805 (for 10mA Bias)
R4/L4
0Ω (1900)
60Ω
— /LL1608-FH or 1005-FH
R3
Note 1: Device under Test
Table 1. Component Values for 1900 MHz and 800 MHz.
21
Digital
Base-band
Processor
Analog
Front-end
MGA-71543
Demodulator
ADC
ADC
Dual
Synthesizer
Dual VCO
DAC
DAC
RF Control Signal
(PDM
)
Figure 24. System Level Overview of MGA-71543 for Handset Designers.
These are the actual necessary components.
The other connectors and board space are only for production.
blue2_lna
rev2.1
L25
R37
L25
C12
C36
C12
C36
R37
C44
R25
C38
C9
U2
C47
L7
R38
C8
C37
R24
U2
33.1 mm
1.303 in
C38
L7
R21
R20
U4
C44
C37
C47
C9
R38
R25
R21
C8
R20
U4
J10
J9
J8
J7
AGILENT TECHNOLOGIES
20.1 mm
0.791 in
Software controlling the switch
Manual switch control
Figure 25. Small Size Amplifier Board with Components for Handset Focussed Designers.
22
4 layer Board
Designation
Description
PCS-1900
Part Number
Package
U2 or 71
DUT[1]
MGA-71543
FDG6303N
SOT-343 (SC-70)
Dual N-channel, Digital FET
Size 0402
U4 or O3
Switch b/n Gnd resistors
C12
2.2 pF
0.033 µF
100 pF
Not used
27 pF
C8, C47
Size 0402
C9, C44
Size 0402
C38
C36, C37
Size 0402
L5
3.9 nH
4.7 nH
1.5 nH
Not used
51Ω
TOKO LL1005
TOKO LL1005
TOKO LL1005
Size 0402
L6
Size 0402
L7
Size 0402
L25
For tuning/Not used here
Size 0402
R38
R20
36Ω
Size 0402 (for 16 mA Bias)
Size 0402 (for 11 mA Bias)
Size 0402
R21
56Ω
R24, R25
6Ω
R16, R17
0Ω
Size 0402 (Jumper)
Size 0402 (Jumper)
Used with other FET switches
R37
0Ω
R18, R28
Not used
Note 1: Device under Test
Table 2. Component Values for 1900 MHz Amplifier on Smaller Board.
References
1. Application note RLM020199, “Designing with the
MGA-72543 RFIC Amplifier/Bypass Switch”.
2. G.D.Vendelin, A.M.Pavio and U.L.Rhode,
“Microwave Circuit Design Using Linear and
Nonlinear Techniques”.
23
MGA-71543
blue2_lna
rev2.1
RF IN
RF OUT
L25
C12
C36
R37
U2
C38
C9
C47
L7
C44
R38
Switch & Bias Control
R25
C37
R24
R21
C8
R20
U4
1 or 4*
2 or 5
3 or 6
6 or 3
5 or 2
J10
J9
J8
J7
4 or 1*
S2
G2
AGILENT TECHNOLOGIES
03
D1
D2
G1
S1
SC70-6
U4 = FDG6303N
Dual N-channel, Digital FET
MGA-71543
C36
C37
IN
C9
L7
R38
C12
OUT
L6
L5
R38
C47
Not used in this case.
C44
These could be used with
other digital FET to select
more discrete current values.
C8
R25
R20
R24
R21
1 or 4*
2 or 5
3 or 6
6 or 3
5 or 2
R28
R18
4 or 1*
(0Ω Jumper) (0Ω Jumper)
R16 (0Ω Jumper)
FDG6303N
R17 (0Ω Jumper)
Selects current
set by R21
Selects current
set by R20
Vd = 3 Volt
Figure 26. LNA Bypass Circuit Control on Small Test Board.
For product information and a complete list of distributors, please go to our web site: www.avagotech.com
Avago, Avago Technologies, and the A logo are trademarks of Avago Technologies in the United States and other countries.
Data subject to change. Copyright © 2005-2015 Avago Technologies. All rights reserved. Obsoletes 5989-4193EN
AV02-3597EN - September 28, 2015
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