Cascadable Silicon Bipolar
MMIC␣ Amplifier
Technical Data
MSA-0485
Features
• Cascadable 50 Ω Gain Block
• 3 dB Bandwidth:
DC to 3.6 GHz
• 8.0 dB Typical Gain at
1.0␣ GHz
• 12.5 dBm Typical P
1.0␣ GHz
• Unconditionally Stable
(k>1)
• Low Cost Plastic Package
1 dB
at
plastic package. This MMIC is
designed for use as a general
purpose 50 Ω gain block. Typical
applications include narrow and
broad band IF and RF amplifiers
in commercial and industrial
applications.
The MSA-series is fabricated using
HP’s 10 GHz fT, 25␣ GHz f
silicon bipolar MMIC process
which uses nitride self-alignment,
ion implantation, and gold metallization to achieve excellent
performance, uniformity and
Description
The MSA-0485 is a high performance silicon bipolar Monolithic
Microwave Integrated Circuit
reliability. The use of an external
bias resistor for temperature and
current stability also allows bias
flexibility.
(MMIC) housed in a low cost
Typical Biasing Configuration
R
bias
85 Plastic Package
,
MAX
V
> 7 V
CC
RFC (Optional)
C
block
IN OUT
4
3
MSA
1
2
V
d
= 5.25 V
C
block
5965-9577E
6-338
MSA-0485 Absolute Maximum Ratings
Parameter Absolute Maximum
Device Current 85 mA
Power Dissipation
[2,3]
500 mW
RF Input Power +13 dBm
Junction Temperature 150°C
Storage Temperature –65 to 150° C
Notes:
1. Permanent damage may occur if any of these limits are exceeded.
2. T
3. Derate at 11.1 mW/° C for T
4. See MEASUREMENTS section “Thermal Resistance” for more information.
CASE
= 25°C.
> 105°C.
C
[1]
Thermal Resistance
θjc = 90°C/W
[2,4]
:
Electrical Specifications
Symbol Parameters and Test Conditions: Id = 50 mA, Z
G
P
Power Gain (|S21|2) f = 0.1 GHz dB 8.3
[1]
, T
A
= 25° C
= 50 Ω Units Min. Typ. Max.
O
f = 1.0 GHz 7.0 8.0
∆G
f
3 dB
VSWR
Gain Flatness f = 0.1 to 2.5 GHz dB ±0.7
P
3 dB Bandwidth GHz 3.6
Input VSWR f = 0.1 to 2.5 GHz 1.6:1
Output VSWR f = 0.1 to 2.5 GHz 2.0:1
NF 50 Ω Noise Figure f = 1.0 GHz dB 7.0
P
IP
t
V
1 dB
3
D
d
Output Power at 1 dB Gain Compression f = 1.0 GHz dBm 12.5
Third Order Intercept Point f = 1.0 GHz dBm 25.5
Group Delay f = 1.0 GHz psec 125
Device Voltage V 4.2 5.25 6.3
dV/dT Device Voltage Temperature Coefficient mV/°C –8.0
Note:
1. The recommended operating current range for this device is 30 to 70 mA. Typical performance as a function of current
is on the following page.
6-339
MSA-0485 Typical Scattering Parameters (Z
Freq.
S
11
S
21
= 50 Ω, TA = 25° C, I
O
S
12
= 50 mA)
d
S
GHz Mag Ang dB Mag Ang dB Mag Ang Mag Ang
0.1 .21 177 8.4 2.63 175 –16.1 .156 2 .08 –16
0.2 .20 176 8.3 2.60 171 –16.2 .155 2 .08 –30
0.4 .20 172 8.2 2.57 163 –16.1 .156 3 .10 –54
0.6 .19 171 8.1 2.55 155 –16.2 .155 5 .13 –71
0.8 .19 168 8.1 2.54 146 –16.0 .158 6 .16 –83
1.0 .18 166 8.0 2.52 138 –15.7 .164 9 .18 –93
1.5 .16 167 7.8 2.46 117 –15.3 .171 11 .25 –116
2.0 .18 168 7.4 2.34 97 –14.6 .187 12 .29 –136
2.5 .21 173 6.9 2.21 83 –13.8 .204 16 .34 –150
3.0 .27 169 6.3 2.07 65 –13.4 .213 13 .38 –161
3.5 .33 161 5.7 1.92 48 –12.6 .234 9 .39 –172
4.0 .38 154 4.8 1.74 33 –12.3 .242 6 .37 –179
4.5 .42 145 4.1 1.59 18 –12.1 .249 3 .36 –174
5.0 .44 131 3.3 1.46 4 –11.7 .259 –3 .34 –165
A model for this device is available in the DEVICE MODELS section.
22
Typical Performance, T
(unless otherwise noted)
12
10
8
Gain Flat to DC
(dB)
p
6
G
4
2
0
0.1 0.3 0.5 1.0 3.0 6.0
FREQUENCY (GHz)
Figure 1. Typical Power Gain vs.
Frequency, TA = 25°C, Id = 50 mA.
13
12
(dBm)
1 dB
11
P
8
7
NF (dB)
6
–25 0 +25 +55 +85
TEMPERATURE (°C)
Figure 4. Output Power at 1 dB Gain
Compression, NF and Power Gain vs.
Case Temperature, f = 1.0 GHz,
=50mA.
I
d
P
1 dB
G
P
NF
= 25° C
A
9
(dB)
8
p
G
7
80
TC = +85°C
T
= +25°C
C
T
= –25°C
C
60
(mA)
40
d
I
20
0
2345671
V
(V)
d
Figure 2. Device Current vs. Voltage.
21
18
Id = 70 mA
15
(dBm)
12
Id = 50 mA
1 dB
P
9
Id = 30 mA
6
3
0.1 0.2 0.3 0.5 2.01.0 4.0
FREQUENCY (GHz)
Figure 5. Output Power at 1 dB Gain
Compression vs. Frequency.
9
8
7
(dB)
p
G
6
5
4
20 40 50 60 7030
0.1 GHz
1.0 GHz
2.0 GHz
I
(mA)
d
Figure 3. Power Gain vs. Current.
7.5
7.0
6.5
NF (dB)
6.0
5.5
0.1 0.2 0.3 0.5 2.01.0
Id = 30 mA
I
= 50 mA
d
I
= 70 mA
d
FREQUENCY (GHz)
Figure 6. Noise Figure vs. Frequency.
6-340
85 Plastic Package Dimensions
.020
.51
A04
.085
2.15
5° TYP.
.286 ± .030
7.36 ± .76
4
0.143 ± 0.015
3.63 ± 0.38
3
RF OUTPUT
AND BIAS
Notes:
(unless otherwise specified)
1. Dimensions are
2
2. Tolerances
in .xxx = ± 0.005
mm .xx = ± 0.13
.006 ± .002
.15 ± .05
45°
1
.060 ± .010
1.52 ± .25
.07
0.43
GROUND
RF INPUT
GROUND
in
mm
6-341
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