Alpha Industries, Inc. [781] 935-5150
· Fax [617] 824-4579 · Email sales@alphaind.com · www.alphaind.com
1
Specifications subject to change without notice. 12/99A
2529 GHz GaAs MMIC
Driver Amplifier
Features
I Single Bias Supply Operation (6 V)
I 17 dB Typical Small Signal Gain
I 16 dBm Typical P
1 dB
Output Power
at 26.5 GHz
I 0.25 µm Ti/Pd/Au Gates
I 100% On-Wafer RF and DC Testing
I 100% Visual Inspection to MIL-STD-883
MT 2010
Chip Outline
AA026P1-00
Description
Alpha's three-stage reactively-matched 2529 GHz
GaAs MMIC driver amplifier has typical small signal gain
of 17 dB with a typical P
1 dB
of 16 dBm at 26.5 GHz.
The chip uses Alpha's proven 0.25
µm MESFET
technology, and is based upon MBE layers and electron
beam lithography for the highest uniformity and
repeatability. The FETs employ surface passivation to
ensure a rugged, reliable part with through-substrate via
holes and gold-based backside metallization to facilitate
a conductive epoxy die attach process. All chips are
screened for gain, output power and S-parameters
prior to shipment for guaranteed performance.
Parameter
Condition
Symbol
Min.
Typ.
2
Max.
Unit
Drain Current
I
DS
120
170
mA
Small Signal Gain
F = 2529 GHz
G
14
17
dB
Input Return Loss
F = 2529 GHz
RL
I
-8
-6
dB
Output Return Loss
F = 2529 GHz
RL
O
-10
-6
dB
Output Power at 1 dB Gain Compression
F = 26.5 GHz
P
1 dB
14
16
dBm
Saturated Output Power
F = 26.5 GHz
P
SAT
15
17
dBm
Thermal Resistance
1
JC
132
°C/W
Electrical Specifications at 25°C (V
DS
= 6 V)
0.000
0.000
0.853
0.561
1.418
1.647
2.120
2.582
3.200
0.112
0.194
1.760
Dimensions indicated in mm.
All DC (V) pads are 0.1 x 0.1 mm and RF In, Out pads are 0.07 mm wide.
Chip thickness = 0.1 mm.
Characteristic
Value
Operating Temperature (T
C
)
-55°C to +90°C
Storage Temperature (T
ST
)
-65°C to +150°C
Bias Voltage (V
D
)
7 V
DC
Power In (P
IN
)
16 dBm
Junction Temperature (T
J
)
175°C
Absolute Maximum Ratings
1. Calculated value based on measurement of discrete FET.
2. Typical represents the median parameter value across the specified
frequency range for the median chip.
2529 GHz GaAs MMIC Driver Amplifier
AA026P1-00
2
Alpha Industries, Inc. [781] 935-5150
· Fax [617] 824-4579 · Email sales@alphaind.com · www.alphaind.com
Specifications subject to change without notice. 12/99A
-50
-40
-30
-20
-10
0
10
20
20
21
22
23
24
25
26
27
28
29
30
Frequency (GHz)
(dB)
S
12
S
11
S
22
S
21
Typical Small Signal Performance
S-Parameters (V
D
= 6 V)
Typical Performance Data
6 V
RF IN
RF OUT
.01
µF
50 pF
Bias Arrangement
Detail A
RF IN
RF OUT
V+
See
Detail A
Circuit Schematic
For biasing on, adjust V
DS
from zero to the desired value
(6 V recommended). For biasing off, reverse the biasing on procedure.
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