6-482
Features
MSA-3111
• Surface Mount SOT-143
Package
• 3 dB Bandwidth: DC to
0.5 GHz
• 18.4 dB Gain at 1 GHz
• 3.5 dB NF at 1 GHz
MSA-3135
• Hermetic Ceramic Package
• 3 dB Bandwidth: DC to
0.6 GHz
• 19.6 dB Gain at 1 GHz
• 3.2 dB NF at 1 GHz
MSA-3185
• Plastic Microstrip Package
• 3 dB Bandwidth: DC to
0.5 GHz
• 18.7 dB Gain at 1 GHz
• 3.5 dB NF at 1 GHz
MSA-3186
• Surface Mount Plastic
Microstrip Package
• 3 dB Bandwidth: DC to
0.5 GHz
• 18.7 dB Gain at 1 GHz
• 3.5 dB NF at 1 GHz
Silicon Bipolar RFIC Amplifiers
Technical Data
MSA-31XX Series
Description
The MSA-31XX series are high
performance silicon bipolar RFIC
amplifiers designed to be
cascadable in 50 Ω systems. The
stability factor of K > 1 contrib-
utes to easy cascading in
numerous narrow and broadband
IF and RF commercial and
industrial applications.
The MODAMP MSA series is
fabricated using a 10 GHz fT,
25 GHz FMAX, silicon bipolar RFIC
process which utilizes nitride self-
alignment, ion implantation, and
gold metallization to achieve
excellent uniformity,
performance, and reliability. The
use of an external bias resistor for
temperature and current stability
also allows bias flexibility.
Package options include, the
industry standard plastic surface
mount SOT-143 package, the
100␣ mil surface mountable
hermetic ceramic package, the
85␣ mil plastic microstripline
package, and the 85 mil surface
mountable plastic microstripline
package.
MSA-3111
MSA-3186
MSA-3185
MSA-3135
5965-9664E
6-483
Absolute Maximum Ratings[1]
MSA- MSA- MSA-
Parameter 3111 3135 3185, -3186
Device Current 50 mA 60 mA 60 mA
Power Dissipation[2,3] 250 mW[3a] 325 mW[3b] 325 mW[3c]
RF Input Power +13 dBm +13 dBm +13 dBm
Junction Temperature 150°C 200°C 150°C
Storage Temperature -65 to 150°C -65 to 200°C -65 to 150°C
Thermal
Resistance: θjc 500°C/W 155°C/W 115°C/W
Notes:
1. Permanent damage may occur if any of these limits are exceeded.
2. TCASE = 25°C.
3a. Derate at 2.0 mW/°C for TC > 25°C.
b. Derate at 6.5 mW/°C for TC > 149°C.
c. Derate at 8.7 mW/°C for TC > 112°C.
Typical Biasing
Configuration
Electrical Specifications, T
A = 25°C
ID = 29 mA, Zo = 50 Ω
MSA-3111 MSA-3135 MSA-3185, -3186
Parameters and
Symbol Test Conditions Units Min. Typ. Max. Min. Typ. Max. Min. Typ. Max.
GPPower Gain
(|S21|2)
f = 0.1 GHz dB 23.5 24.4 23.5 24.5 26.5 23.5 24.6
f = 0.5 GHz 22.4 22.8 22.3
f = 1.0 GHz 18.4 19.6 18.7
∆GPGain Flatness
f = 0.1 to 0.3 GHz dB ±0.5 ±0.4 ±1.0 ±0.5
f3dB 3 dB Bandwidth GHz 0.5 0.6 0.5
VSWR Input VSWR
f = 0.1 to 3.0 GHz 1.2:1 1.2:1 1.2:1
Output VSWR
f = 0.1 to 3.0 GHz 1.2:1 1.2:1 1.4:1
P1dB Power Output @
1 dB Gain
Compression:
f = 1.0 GHz dBm 9.0 9.3 9.0
NF 50 Ω Noise
Figure
f = 1.0 GHz dB 3.5 3.2 3.5
IP3Third Order
Intercept
Point
f = 1.0 GHz dBm 23 22 21
tdGroup Delay
f = 1.0 GHz psec 130 130 130
VDDevice Voltage
TC = 25°C V 4.0 4.5 6.0 4.5 4.7 5.5 4.0 4.7 6.0
dV/dT Device Voltage
Temperature Coefficient mV/°C -9.6 -9.6 -9.6
Note: 1. Refer to “Tape and Reel Packaging for Surface Mount Devices.”
OUTPUT
R
bias
V 7 V
CC
V = 4.5 V
d
INPUT
4
1
2
3
R =
bias
I
d
DC BLOCK
RF CHOKE
CC d
V – V
MSA
6-484
Typical Performance for MSA-3111
Figure 1. Power Gain vs. Frequency at
Four Temperatures, ID = 29 mA.
Figure 2. Power Gain vs. Current at
25°C.
Figure 3. Typical P1dB vs. Frequency at
25°C.
Gp (dB)
FREQUENCY (GHz)
0.1 1.0 4.0
30
25
5
10
15
20 -25°C
85°C
25°C
-55°C
I (mA)
D
Gp (dB)
4025 30
16
12
24
20
30
26
14
18
22
28
20 35
1.0 GHz
0.5 GHz
10
0.1 GH
z
2.0 GHz
P (dBm)
1dB
FREQUENCY (GHz)
0.1
01.0 4.0
14
2
8
10
25 mA
6
4
12 40 mA
35 mA
30 mA
20 mA
Figure 6. ID vs. VD at Four
Temperatures.
Figure 5. Power Gain, Noise Figure,
and P1dB vs. Temperature at 1 GHz and
ID = 29 mA.
Figure 4. Noise Figure vs. Frequency
at ID = 29 mA.
NOISE FIGURE (dB)
FREQUENCY (GHz)
0.1
31.0 4.0
4
5
40 mA
20 mA
P (dBm)
1dB
AMBIENT TEMPERATURE (°C)
GAIN (dB)
8525
9
19
18
8
10
17
-25
NF
6
4
5
3
NOISE FIGURE (dB)
P
G
1dB
P
16
-55°C
0
0
30
10
20
V (VOLTS)
D
40
165432
-25°C
25°C
85°C
I mA
D
Typical Scattering Parameters at T
A = 25°C, for MSA-3111
ID = 29 mA, Zo = 50 Ω
S11 S21 S12 S22
(GHz) Mag. Ang. (dB) Mag. Ang. (dB) Mag. Ang. Mag. Ang.
0.1 0.05 3 24.4 16.53 167 -27.0 0.045 9 0.10 -23
0.2 0.06 4 24.0 15.83 156 -26.5 0.047 16 0.10 -41
0.3 0.07 -4 23.4 14.78 146 -26.0 0.050 23 0.10 -59
0.4 0.07 -8 22.7 13.59 136 -25.3 0.054 28 0.11 -72
0.5 0.07 -12 22.0 12.53 128 -24.6 0.059 33 0.11 -84
0.6 0.07 -18 21.1 11.41 121 -23.9 0.064 36 0.11 -94
0.7 0.07 -22 20.4 10.47 114 -23.1 0.070 39 0.11 -100
0.8 0.08 -26 19.7 9.63 109 -22.4 0.076 41 0.11 -106
0.9 0.08 -32 19.0 8.89 104 -21.7 0.082 42 0.11 -111
1.0 0.08 -35 18.4 8.27 99 -21.1 0.088 43 0.11 -114
1.5 0.08 -59 15.6 5.99 80 -18.5 0.118 44 0.11 -123
2.0 0.10 -79 13.4 4.69 65 -16.6 0.148 42 0.10 -122
2.5 0.10 -104 11.8 3.88 52 -15.2 0.175 38 0.11 -118
3.0 0.10 -129 10.4 3.31 39 -14.1 0.198 33 0.12 -114
3.5 0.12 -163 9.3 2.91 27 -13.2 0.219 28 0.12 -117
4.0 0.15 164 8.2 2.58 16 -12.6 0.236 23 0.13 -125
4.5 0.21 140 7.4 2.34 4 -12.1 0.250 18 0.13 -136
5.0 0.29 121 6.5 2.10 -7 -11.7 0.260 14 0.14 -148
5.5 0.36 109 5.6 1.90 -18 -11.3 0.271 10 0.17 -158
6.0 0.42 98 4.6 1.70 -28 -11.0 0.282 7 0.21 -165
Frequency
6-485
Typical Performance for MSA-3135
Figure 1. Power Gain vs. Frequency at
Four Temperatures, ID = 29 mA.
Figure 2. Power Gain vs. Current at
25°C.
Figure 3. Typical P1dB vs. Frequency at
25°C.
Gp (dB)
FREQUENCY (GHz)
0.1
01.0 4.0
30
25
5
10
15
20 25°C
125°C
85°C
-55°C
I (mA)
D
Gp (dB)
4025 30
16
12
24
20
30
26
14
18
22
28
20 35
1.0 GHz
10
0.1 GH
z
2.0 GHz
0.5 GHz
P (dBm)
1dB
FREQUENCY (GHz)
0.1 1.0 4.0
16
14
8
10
6
4
12
25 mA
40 mA
35 mA
30 mA
20 mA
Figure 4. Noise Figure vs. Frequency
at ID = 29 mA.
Figure 5. Power Gain, Noise Figure,
and P1dB vs. Temperature at 1 GHz and
ID = 29 mA.
Figure 6. ID vs. VD at Four
Temperatures.
NOISE FIGURE (dB)
FREQUENCY (GHz)
0.1 1.0 4.0
2
4
5
3
20 mA
40 mA
P (dBm)
1dB
AMBIENT TEMPERATURE (°C)
GAIN (dB)
8525
9
19
18
8
10
17
-25
NF
6
4
5
3
NOISE FIGURE (dB)
P
G
1dB
P
16
0
0
30
10
20
V (VOLTS)
D
40
165432
85°C
25°C
-55°C
I mA
D
50 125°C
Typical Scattering Parameters at TA = 25°C, for MSA-3135
ID = 29 mA, Zo = 50 Ω
S11 S21 S12 S22
(GHz) Mag. Ang. (dB) Mag. Ang. (dB) Mag. Ang. Mag. Ang.
0.1 0.05 1 24.7 17.11 169 -27.3 0.043 7 0.09 -19
0.2 0.06 2 24.4 16.52 158 -27.0 0.045 14 0.09 -37
0.3 0.07 -2 23.9 15.72 149 -26.5 0.047 20 0.09 -52
0.4 0.07 -7 23.4 14.77 139 -26.0 0.050 24 0.09 -67
0.5 0.07 -12 22.8 13.77 131 -25.4 0.054 29 0.09 -80
0.6 0.07 -21 22.1 12.79 124 -24.7 0.058 32 0.09 -92
0.7 0.07 -27 21.5 11.86 117 -24.1 0.063 34 0.09 -102
0.8 0.07 -33 20.9 11.03 111 -23.4 0.037 36 0.09 -111
0.9 0.08 -39 20.2 10.25 106 -22.8 0.072 38 0.09 -119
1.0 0.08 -44 19.6 9.55 101 -22.2 0.078 39 0.09 -127
1.5 0.08 -79 16.9 7.03 80 -19.7 0.104 39 0.10 -155
2.0 0.09 -116 14.8 5.52 63 -17.7 0.130 36 0.10 -171
2.5 0.11 -145 13.2 4.55 49 -16.3 0.153 31 0.09 176
3.0 0.15 -172 11.7 3.86 35 -15.2 0.175 25 0.10 162
3.5 0.19 166 10.5 3.34 22 -14.3 0.192 19 0.11 154
4.0 0.24 149 9.4 2.94 9 -13.7 0.207 13 0.12 152
4.5 0.29 134 8.3 2.61 -3 -13.2 0.219 7 0.13 148
5.0 0.35 120 7.4 2.34 -16 -12.8 0.228 1 0.15 141
5.5 0.41 107 6.4 2.08 -27 -12.5 0.236 -5 0.19 138
6.0 0.46 95 5.4 1.87 -39 -12.3 0.243 -10 0.24 137
Frequency
6-486
Typical Performance for MSA-3185, MSA-3186
Figure 2. Power Gain vs. Current at
25°C.
Figure 3. Typical P1dB vs. Frequency at
25°C.
Figure 1. Power Gain vs. Frequency at
Four Temperatures, ID = 29 mA.
Gp (dB)
FREQUENCY (GHz)
0.1
01.0 4.0
30
25
5
10
15
20 85°C
25°C
-55°C and -25°C
I (mA)
D
Gp (dB)
4025 30
16
12
24
20
30
26
14
18
22
28
20 35
1.0 GHz
0.5 GHz
10
0.1 GH
z
2.0 GHz
P (dBm)
1dB
FREQUENCY (GHz)
0.1
01.0 4.0
14
2
8
10
25 mA
6
4
12 40 mA
35 mA
30 mA
20 mA
Figure 4. Noise Figure vs. Frequency
at ID = 29 mA.
Figure 5. Power Gain, Noise Figure,
and P1dB vs. Temperature at 1 GHz and
ID = 29 mA.
Figure 6. ID vs. VD at Four
Temperatures.
NOISE FIGURE (dB)
FREQUENCY (GHz)
0.1 1.0 4.0
3
4
5
20 mA
40 mA
P (dBm)
1dB
AMBIENT TEMPERATURE (°C)
GAIN (dB)
8525
9
19
18
8
10
17
-25
6
4
5
3
NOISE FIGURE (dB)
P
G
16
NF
1dB
P
0
0
30
10
20
V (VOLTS)
D
40
165432
I mA
D
50
25°C
-25°C
-55°C
85°C
7
6-487
Frequency
Typical Scattering Parameters at TA = 25°C, for MSA-3186
ID = 29 mA, Zo = 50 Ω
S11 S21 S12 S22
(GHz) Mag. Ang. (dB) Mag. Ang. (dB) Mag. Ang. Mag. Ang.
0.1 0.05 1 24.7 17.11 169 -27.3 0.043 7 0.09 -19
0.2 0.06 2 24.4 16.52 158 -27.0 0.045 14 0.09 -37
0.3 0.07 -2 23.9 15.72 149 -26.5 0.047 20 0.09 -52
0.4 0.07 -7 23.4 14.77 139 -26.0 0.050 24 0.09 -67
0.5 0.07 -12 22.8 13.77 131 -25.4 0.054 29 0.09 -80
0.6 0.07 -21 22.1 12.79 124 -24.7 0.058 32 0.09 -92
0.7 0.07 -27 21.5 11.86 117 -24.1 0.063 34 0.09 -102
0.8 0.07 -33 20.9 11.03 111 -23.4 0.037 36 0.09 -111
0.9 0.08 -39 20.2 10.25 106 -22.8 0.072 38 0.09 -119
1.0 0.08 -44 19.6 9.55 101 -22.2 0.078 39 0.09 -127
1.5 0.08 -79 16.9 7.03 80 -19.7 0.104 39 0.10 -155
2.0 0.09 -116 14.8 5.52 63 -17.7 0.130 36 0.10 -171
2.5 0.11 -145 13.2 4.55 49 -16.3 0.153 31 0.09 176
3.0 0.15 -171 11.7 3.86 35 -15.2 0.175 25 0.10 162
3.5 0.19 166 10.5 3.34 22 -14.3 0.192 19 0.11 154
4.0 0.24 149 9.4 2.94 9 -13.7 0.207 13 0.12 152
4.5 0.29 134 8.3 2.61 -3 -13.2 0.219 7 0.13 148
5.0 0.35 120 7.4 2.34 -16 -12.8 0.228 1 0.15 141
5.5 0.41 107 6.4 2.08 -27 -12.5 0.236 -5 0.19 138
6.0 0.46 95 5.4 1.87 -39 -12.3 0.243 -10 0.24 137
Typical Scattering Parameters at TA = 25°C, for MSA-3185
ID = 29 mA, Zo = 50 Ω
S11 S21 S12 S22
(GHz) Mag. Ang. (dB) Mag. Ang. (dB) Mag. Ang. Mag. Ang.
0.1 0.05 -3 24.6 17.04 167 -27.2 0.044 8 0.09 -32
0.2 0.04 -13 24.2 16.22 156 -26.8 0.046 16 0.09 -57
0.3 0.04 -22 23.6 15.18 145 -26.2 0.049 22 0.10 -76
0.4 0.06 -25 23.0 14.07 135 -25.5 0.053 27 0.11 -84
0.5 0.07 -27 22.2 12.95 127 -24.7 0.058 31 0.12 -91
0.6 0.07 -31 21.5 11.85 119 -24.0 0.063 34 0.12 -102
0.7 0.07 -33 20.7 10.85 112 -23.3 0.068 36 0.12 -110
0.8 0.06 -41 20.0 10.01 106 -22.6 0.074 38 0.13 -120
0.9 0.06 -45 19.3 9.27 101 -21.9 0.080 39 0.13 -126
1.0 0.06 -57 18.7 8.59 96 -21.3 0.086 40 0.13 -134
1.5 0.05 -89 15.9 6.23 74 -18.6 0.118 38 0.13 -157
2.0 0.05 -122 13.9 4.93 57 -16.6 0.147 33 0.12 -173
2.5 0.08 167 12.2 0.07 41 -15.1 0.175 26 0.16 -163
3.0 0.16 143 10.7 3.44 25 -14.1 0.197 17 0.18 -154
3.5 0.21 120 9.4 2.95 11 -13.5 0.212 9 0.24 -138
4.0 0.30 102 8.2 2.56 -3 -13.0 0.223 2 0.28 -124
4.5 0.40 93 7.1 2.26 -16 -12.7 0.231 -5 0.31 -114
5.0 0.51 87 6.1 2.03 -28 -12.4 0.240 -11 0.34 -109
5.5 0.61 80 5.2 1.82 -40 -12.2 0.247 -17 0.36 -105
6.0 0.67 72 4.3 1.64 -53 -12.0 0.251 -23 0.40 -101
Frequency
6-488
SOT-143
Outline Drawings
85
35
86
Tape and Reel Part Number Ordering Information
Part Number Devices per Reel Reel Size
MSA-3111-TR1 3000 7"
MSA-3186-TR1 1000 7"
13
4
2
GROUND
DIA.
GROUND
RF OUTPUT
AND BIAS
RF INPUT
.085
2.15 .083
2.11
.020
.508
.100
2.54
.455 ± .030
11.54 ± .75
.006 ± .002
.15 ± .05
Notes:
(unless otherwise specified)
1. Dimensions are in
2. Tolerances
in .xxx = ± 0.005
mm .xx = ± 0.13
mm
.022
.56
.057 ± .010
1.45 ± .25
A31
13
4
2
5° TYP.
45°
GROUND
GROUND
RF OUTPUT
AND BIAS
RF INPUT
.085
2.15
.286 ± .030
7.36 ± .76
Notes:
(unless otherwise specified)
1. Dimensions are in
2. Tolerances
in .xxx = ± 0.005
mm .xx = ± 0.13
mm
.020
.51
.07
0.43
.060 ± .010
1.52 ± .25 .006 ± .002
.15 ± .05
0.143 ± 0.015
3.63 ± 0.38
A31
4
0.51 ± 0.13
(0.020 ± 0.005)
2.34 ± 0.38
(0.092 ± 0.015)
2.67 ± 0.38
(0.105 ± 0.15)
13
2
2.16 ± 0.13
(0.085 ± 0.005)
DIMENSIONS ARE IN MILLIMETERS (INCHES)
1.52 ± 0.25
(0.060 ± 0.010)
0.66 ± 0.013
(0.026 ± 0.005)
0.203 ± 0.051
(0.006 ± 0.002)
0.30 MIN
(0.012 MIN)
C
L
45°
5° TYP.
8° MAX
0° MIN
GROUND
RF INPUT
RF OUTPUT
AND DC BIAS
GROUND
A31
DIMENSIONS ARE IN MILLIMETERS (INCHES)
0.10 (0.004)
0.013 (0.0005)
0.92 (0.036)
0.78 (0.031)
GROUND
RF INPUT
RF OUTPUT AND BIAS
XXX
PACKAGE
MARKING
CODE 1.40 (0.055)
1.20 (0.047) 2.65 (0.104)
2.10 (0.083)
0.54 (0.021)
0.37 (0.015)
0.60 (0.024)
0.45 (0.018)
2.04 (0.080)
1.78 (0.070)
3.06 (0.120)
2.80 (0.110) 0.15 (0.006)
0.09 (0.003)
1.02 (0.041)
0.85 (0.033)
0.69 (0.027)
0.45 (0.018)
GROUND
A31
