28–40 GHz GaAs MMIC Low Noise Amplifier
AA038N1-00, AA038N2-00
Typical Performance Data
30
20
10
S
21
Bias Arrangement
V
D2
.01
µF
50 pF
(dB)
0
-10
S
22
S
11
RF IN
RF OUT
-20
-30
.01
µF
50 pF
18 20 22 24 26 28 30 32 34 36 38 40 42
V
D1
Frequency (GHz)
Typical Small Signal Performance
S-Parameters (V
D
= 4.5 V)
11
10
Gain* 3.0 V, 5.5 V
Gain 2.5 V
Gain 4.5 V
31
29
27
25
23
21
NF 4.5 V
NF 2.5 V
NF* 3.0 V, 5.5 V
19
17
15
13
18 20 22 24 26 28 30 32 34 36 38 40 42
For biasing on, adjust V
D
from zero to the desired value
(4.5 V recommended). For biasing off, reverse the biasing on procedure.
Circuit Schematic
D
Noise Figure (dB)
9
8
7
6
5
4
3
2
Gain (dB)
G
Detail A
V
D2
Frequency (GHz)
Typical Gain and Noise Figure
Performance for Three Bias Conditions
*Special Bias: V
D1
= 3.0 V, V
D2
= 5.5 V
RF IN
SEE
DETAIL
A
G
D
G
D
G
D
G
D
RF OUT
V
D1
23
36
34
Gain
32
30
28
26
24
I
D
22
20
NF
1.0
2.0
3.0
4.0
5.0
6.0
18
16
38 GHz Gain (dB) and
38 GHz Noise Figure (dB)
21
19
17
15
13
11
9
7
5
3
Drain Current (mA)
V
D1
and V
D2
(V)
Typical Gain and Noise Figure
Performance vs. Drain Bias (V
D1
= V
D2
)
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
ALPHA [ ALPHA INDUSTRIES ]
