6-192
2 6 GHz Cascadable GaAs
MMIC Amplifier
Technical Data
Features
Cascadable 50
Gain Block
Broadband Performance:
26 GHz
12.0 dB Typical Gain
0.8 dB Gain Flatness
12.0 dBm P
1 dB
Single Supply Bias
Cost Effective Ceramic
Microstrip Package
MGA-64135
Description
The MGA-64135 is a high perfor-
mance gallium arsenide Monolithic
Microwave Integrated Circuit
(MMIC) housed in a cost effective,
microstrip package. This device is
designed for use as a general
purpose 50 ohm gain block in the 2
to 6 GHz frequency range. Typical
35 Micro-X Package
Typical Biasing Configuration
C
block
V
d
RFC
IN
1
4
3
2
OUT
MGA
applications include narrow and
broadband IF and RF amplifiers
for commercial, industrial, and
military requirements.
This MMIC is a cascade of two
stages, each utilizing shunt
feedback to establish a broadband
impedance match. The source of
each stage is AC grounded to
allow biasing from a single
positive power supply. The
interstage blocking capacitor as
well as a resistive "self-bias"
network are included on chip.
The die is fabricated using HP's
nominal .5 micron recessed
Schottky-barrier-gate, gold
metallization and silicon nitride
passivation to achieve excellent
performance, uniformity, and
reliability.
5965-9005E
6-193
MGA-64135 Absolute Maximum Ratings
Absolute
Symbol
Parameter
Units
Maximum
[1]
V
d
Device Voltage
V
12
P
diss
Total Power Dissipation
[2]
mW
650
P
in
CW RF Input Power
dBm
+13
T
ch
Channel Temperature
C
175
T
STG
Storage Temperature
[3]
C
-65 to 175
Notes:
1. Operation of this device above any one of these parameters may cause
permanent damage.
2. Derate linearly at 8.3 mW/
C for
T
CASE
> 103
C.
3. Storage above +150
C may tarnish the leads of this package making it
difficult to solder into a circuit. After a device has been soldered into a
circuit, it may be safely stored up to 175
C.
4. The thermal resistance value is based on measurements taken with the
device soldered to a 25 mil Teflon PCB.
5. The small spot size of this technique results in a higher, though more
accurate determination of
jc
than do alternate methods. See MEASURE-
MENTS section for more information.
Thermal Resistance :
jc
= 150
C/W
[4]
; T
CH
= 150
C
Liquid Crystal Measurement:
1
m Spot Size
[5]
G
P
Power Gain (|S
21
|
2
)
f = 2 to 6 GHz
dB
10.0
12.0
G
P
Gain Flatness
f = 2 to 6 GHz
dB
1.20
--
Gain Variation vs. Temperature
f = 2 to 6 GHz
dB
0.5
T
CASE
= 25
C to +85
C
Input VSWR
f = 2 to 6 GHz
1.5:1
2.0:1
Output VSWR
f = 2 to 6 GHz
1.4:1
2.0:1
P
1 dB
Output Power at 1 dB Gain Compression
f = 2 to 6 GHz
dBm
10.0
12.0
NF
50
Noise Figure
f = 2 to 6 GHz
dB
7.5
--
Reverse Isolation (|S
21
|
2
)
f = 2 to 6 GHz
dB
35
I
d
Device Current
mA
35
50
65
MGA-64135 Electrical Specifications, T
A
= 25
C
Symbol
Parameters and Test Conditions: V
d
= 10 V, Z
O
= 50
Units
Min.
Typ.
Max.
VSWR
6-194
MGA-64135 Typical Performance, T
A
= 25
C
MGA-64135 Typical Scattering Parameters (Z
O
= 50
, T
A
= 25
C, V
d
= 10 V)
Freq.
GHz
Mag
Ang
dB
Mag
Ang
dB
Mag
Ang
Mag
Ang
0.5
.27
38
10.6
3.38
174
31.0
.028
13
.38
41
1.0
.18
44
12.9
4.42
9
33.1
.022
20
.26
48
2.0
.14
67
14.3
5.21
54
34.9
.018
19
.16
59
3.0
.17
91
14.5
5.33
93
37.1
.014
21
.11
75
4.0
.20
105
14.2
5.11
131
37.8
.013
15
.11
71
5.0
.18
114
13.6
4.79
167
37.3
.014
10
.14
57
6.0
.07
162
12.8
4.35
157
38.5
.012
1
.17
41
7.0
.15
96
11.8
3.89
123
36.0
.016
3
.16
42
8.0
.23
76
10.8
3.46
92
34.3
.019
4
.10
54
9.0
.32
63
9.5
2.98
63
29.3
.034
12
.04
159
10.0
.43
52
8.6
2.68
38
27.6
.041
11
.09
116
S
11
S
21
S
12
S
22
0
6.0
8.0
2.0
4.0
10.0
0
4.0
6.0
2.0
8.0
FREQUENCY (GHz)
FREQUENCY (GHz)
Figure 2. Output Power @ 1 dB Gain
Compression vs. Frequency, V
d
= 10 V.
6
8
10
16
14
12
G
P
(dB)
11
12
13
14
15
P
1 dB
(dBm)
2.0
6.0
4.0
8.0
FREQUENCY (GHz)
7.0
7.5
8.0
8.5
9.0
NOISE FIGURE
(dB)
Figure 1. Power Gain vs. Frequency,
V
d
= 10 V.
Figure 3. Noise Figure vs. Frequency,
V
d
= 10 V.
0
6.0
8.0
2.0
4.0
10.0
FREQUENCY (GHz)
INPUT
1.0:1
1.2:1
1.4:1
2.0:1
1.8:1
1.6:1
VSWR
Figure 4. VSWR vs. Frequency, V
d
= 10 V.
OUTPUT
6-195
1
3
4
2
GROUND
DIA.
GROUND
RF OUTPUT
RF INPUT
.085
2.15
641
.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
35 Micro-X Package Dimensions
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