Page 1
Cascadable Silicon Bipolar
MMIC␣ Amplifier
Technical Data
MSA-0785
Features
• Cascadable 50 Ω Gain Block
• Low Operating Voltage:
4.0 V Typical V
• 3 dB Bandwidth:
DC to 2.0 GHz
d
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.
• 12.5 dB Typical Gain at
1.0␣ GHz
• Unconditionally Stable
(k>1)
• Low Cost Plastic Package
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
Description
The MSA-0785 is a high performance silicon bipolar Monolithic
Microwave Integrated Circuit
(MMIC) housed in a low cost
performance, uniformity and
reliability. The use of an external
bias resistor for temperature and
current stability also allows bias
flexibility.
Typical Biasing Configuration
R
bias
85 Plastic Package
,
MAX
V
> 5 V
CC
RFC (Optional)
C
block
IN OUT
4
3
MSA
1
2
V
= 4.0 V
d
C
block
5965-9593E
6-402
Page 2
MSA-0785 Absolute Maximum Ratings
Parameter Absolute Maximum
Device Current 60 mA
Power Dissipation
[2,3]
275 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 9.1 mW/° C for T
4. See MEASUREMENTS section “Thermal Resistance” for more information.
CASE
= 25°C.
> 120° C.
C
[1]
Thermal Resistance
θjc = 110°C/W
[2,4]
:
Electrical Specifications
Symbol Parameters and Test Conditions: Id = 22 mA, Z
G
P
Power Gain (|S21|2) f = 0.1 GHz dB 13.5
[1]
, T
A
= 25° C
= 50 Ω Units Min. Typ. Max.
O
f = 1.0 GHz 10.5 12.5
∆G
P
f
3 dB
VSWR
Gain Flatness f = 0.1 to 1.3 GHz dB ±0.7
3 dB Bandwidth GHz 2.0
Input VSWR f = 0.1 to 2.5 GHz 1.4:1
Output VSWR f = 0.1 to 2.5 GHz 1.5:1
NF 50 Ω Noise Figure f = 1.0 GHz dB 5.0
P
IP
t
V
1 dB
3
D
d
Output Power at 1 dB Gain Compression f = 1.0 GHz dBm 5.5
Third Order Intercept Point f = 1.0 GHz dBm 19.0
Group Delay f = 1.0 GHz psec 140
Device Voltage V 3.2 4.0 4.8
dV/dT Device Voltage Temperature Coefficient mV/°C –7.0
Note:
1. The recommended operating current range for this device is 15 to 40 mA. Typical performance as a function of current
is on the following page.
6-403
Page 3
MSA-0785 Typical Scattering Parameters (Z
G
p
(dB)
0.1 0.3 0.5 1.0 3.0 6.0
FREQUENCY (GHz)
Figure 1. Typical Power Gain vs.
Frequency, Id = 22 mA.
102345
V
d
(V)
Figure 2. Device Current vs. Voltage. Figure 3. Power Gain vs. Current.
0
2
4
6
8
10
12
14
0
10
20
30
40
Gain Flat to DC
I
d
(mA)
TC = +85°C
TC = +25°C
TC = –25°C
Id (mA)
G
p
(dB)
4
6
8
10
12
16
14
10 20 30 40
0.1 GHz
0.5 GHz
1.0 GHz
2.0 GHz
4
5
6
12
13
14
–25 0 +25 +55 +85
4
5
6
P
1 dB
(dBm)
NF (dB)
G
p
(dB)
TEMPERATURE (°C)
Figure 4. Output Power at 1 dB Gain
Compression, NF and Power Gain vs.
Case Temperature, f = 1.0 GHz,
Id=22mA.
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.
–3
0
3
6
9
12
15
P
1 dB
(dBm)
Id = 40 mA
Id = 15 mA
Id = 22 mA
5.0
4.5
5.5
6.0
6.5
NF (dB)
FREQUENCY (GHz)
Figure 6. Noise Figure vs. Frequency.
0.1 0.2 0.3 0.5 2.01.0
G
P
NF
P
1 dB
Id = 15 mA
Id = 22 mA
Id = 40 mA
Freq.
S
11
S
21
= 50 Ω, TA = 25° C, I
O
S
12
= 22 mA)
d
S
GHz Mag Ang dB Mag Ang dB Mag Ang Mag Ang
0.1 .05 166 13.5 4.73 174 –18.4 .120 1 .14 –11
0.2 .05 151 13.4 4.70 169 –18.3 .122 3 .14 –21
0.4 .04 115 13.3 4.63 158 –18.3 .121 6 .14 –40
0.6 .04 65 13.1 4.53 148 –18.0 .125 7 .16 –58
0.8 .05 26 12.9 4.41 138 –17.8 .139 9 .17 –71
1.0 .06 –5 12.6 4.25 127 –17.6 .132 10 .18 –84
1.5 .08 –51 11.6 3.82 104 –16.5 .149 12 .18 –109
2.0 .11 –99 10.5 3.33 82 –15.9 .161 11 .17 –126
2.5 .14 –127 9.3 2.91 68 –15.2 .174 13 .16 –134
3.0 .20 –154 7.9 2.48 52 –14.8 .183 7 .16 –139
3.5 .25 –173 6.7 2.16 37 –14.7 .184 5 .16 –132
4.0 .29 171 5.5 1.88 23 –14.8 .182 1 .18 –130
5.0 .35 139 3.5 1.50 –1 –14.3 .193 –6 .21 –133
6.0 .46 100 1.7 1.22 –26 –14.5 .189 –14 .20 –169
A model for this device is available in the DEVICE MODELS section.
22
Typical Performance, T
(unless otherwise noted)
= 25° C
A
6-404
Page 4
85 Plastic Package Dimensions
.020
.51
A07
.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
6-405
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