37–40 GHz GaAs MMIC
Low Noise Amplifier
AA038N3-00
Features
s
Single Bias Supply Operation (5 V)
s
3.5 dB Typical Noise Figure at 38 GHz
s
13 dB Typical Small Signal Gain
s
0.25
µm
Ti/Pd/Au Gates
s
100% On-Wafer RF, DC and Noise
Figure Testing
s
100% Visual Inspection to MIL-STD-883
MT 2010
0.000
0.000
0.085
1.283
1.525
1.610
0.655
Chip Outline
1.310
1.225
Description
Alpha’s three-stage reactively-matched 37–40 GHz
MMIC low noise amplifier has typical small signal gain of
13 dB with a typical noise figure of 3.5 dB at 38 GHz.
The chip uses Alpha’s proven 0.25
µm
low noise PHEMT
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.
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.
Absolute Maximum Ratings
Characteristic
Operating Temperature (T
C
)
Storage Temperature (T
ST
)
Bias Voltage (V
D
)
Power In (P
IN
)
Junction Temperature (T
J
)
Value
-55°C to +90°C
-65°C to +150°C
6 V
DC
10 dBm
175°C
Electrical Specifications at 25°C
Parameter
Drain Current
Small Signal Gain
Noise Figure
Input Return Loss
Output Return Loss
Output Power at 1 dB Gain
Thermal Resistance
2
1. Not measured on a 100% basis.
2. Calculated value based on measurement of discrete FET.
3. Typical represents the median parameter value across the specified
frequency range for the median chip.
Condition
V
D
= 5 V
F = 37–40 GHz
F = 38 GHz
F = 37–40 GHz
F = 37–40 GHz
Compression
1
F = 38 GHz
Symbol
I
DS
G
NF
RL
I
RL
O
P
1 dB
Θ
JC
Min.
10
Typ.
3
20
13
3.5
-12
-12
6
202
Max.
27
3.8
-6
-6
Unit
mA
dB
dB
dB
dB
dBm
°C/W
Alpha Industries, Inc.
[781] 935-5150
•
Fax
[617] 824-4579
•
Email
sales@alphaind.com
•
www.alphaind.com
Specifications subject to change without notice. 8/00A
1
37–40 GHz GaAs MMIC Low Noise Amplifier
AA038N3-00
Typical Performance Data
20
15
S
21
Bias Arrangement
S-Parameters (dB)
10
5
0
-5
-10
-15
-20
-25
S
12
35
36
37
38
39
40
41
42
43
S
11
S
22
Frequency (GHz)
Typical Small Signal Performance
S-Parameters (V
DS
= 5 V)
For biasing on, adjust V
DS
from zero to the desired value
(5 V recommended). For biasing off, reverse the biasing on procedure.
Circuit Schematic
D
Detail A
V
D
RF IN
RF OUT
2
Alpha Industries, Inc.
[781] 935-5150
•
Fax
[617] 824-4579
•
Email
sales@alphaind.com
•
www.alphaind.com
Specifications subject to change without notice. 8/00A
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