1
17350 Horizon Trail, SE
Prior Lake, MN 55372
USA
Tel. 1 952 212 8028
Fax: 1 952 447 8028
e-amil: sales@wantcominc.com
www.wantcominc.com
820-980 MHz LOW NOISE BALANCE AMPLIFIER WA08-2433A
1
Key Features:
Unconditional Stability:
k>1
Low
Noise:
0.45
dB
typical
Output IP3:
38 dBm typical
Gain:
21
dB
P1dB:
18
dBm
minimum
Current Consumption:
125 mA @ +7 ~ +15V, option: +5V
Frequency Range:
820 ~ 980 MHz
Operating Temperature:
-40 ~ +85 C
Return Losses:
20 dB typical
Alarm Output:
Soft Alarm, Hard Alarm, Soft Alarm Open Collector, Hard Alarm Open
Collector, Branch 1 Alarm, Branch 2 Alarm.
Specifications:
a) Table
1
Summary of the electrical specifications WA08-2433A at room temperature
Index
Testing Item
Symbol Test Constraints
Unit
Nom (RT)
Min
Max
Unit
1
Gain
S21
820 - 980
MHz
21
dB
2
Gain Variation
G
20 MHz Bandwidth
MHz
0.20
0.30
dB
3
Input Return Loss
S11
820 - 980
MHz
20
19
dB
4
Output Return Loss
S22
820 - 980
MHz
20
19
dB
5
Reverse Isolation
S12
820 - 980
MHz
40
dB
6
Noise figure
NF
820 - 980
MHz
0.45
0.55
dB
7
Output P1dB
compression
P1dB
820 - 980
MHz
18
dBm
8
Output-Third-Order
Interception point
TOIP3 Two-Tone,
Pout
+0
dBm each, 1 MHz
separation
MHz 38
37
dBm
10
Current Consumption
Idd
Vdd= +7 ~ +15
V
125
mA
11
Power Supply Voltage
Vdd
+7
+15
V
12
Soft Alarm TTL Output
Vs
Normal/Fail, +/- 30%
Id1 or Id2
V 4.65/0.0
V
Soft Alarm Open
Collector Output
Vso Normal/Fail,
External
10K to an external +Vcc
V
Low/High
2
1
Specifications are subject to change without notice.
WA08-2433A LNA is a super low noise
figure, wideband, and high linearity amplifier
with unconditional stable design. The amplifier
offers typical noise figure of 0.45 dB and typical
output IP3 of 38 dBm at the frequency range
from 820 MHz to 980 MHz. WA08-2433A LNA is
most suitable for cellular base stations, wireless
data communications, tower top receiver
amplifiers, cellular micro-cells, last-mile wireless
communication systems, and wireless
measurement applications.
2
17350 Horizon Trail, SE
Prior Lake, MN 55372
USA
Tel. 1 952 212 8028
Fax: 1 952 447 8028
e-amil: sales@wantcominc.com
www.wantcominc.com
Hard Alarm TTL Output
Vh
Normal/Fail, +/- 30%
Idd
V 4.65/0.0
V
Hard Alarm Open
Collector Output
Vho Normal/Fail,
External
10K to an external +Vcc
Low/High
Branch 1 Alarm TTL
Output
Va1
Normal/Fail, +/- 30%
Id1
V 4.65/0.0
V
Branch 2 Alarm TTL
Output
Va2
Normal/Fail, +/- 30%
Id2
V 4.65/0.0
V
13
Maximum RF Input
Power
Pinmax
820- 980, single tone
MHz
15
dBm
b) Passband Frequency Response
As shown in Figure 1, the typical gain of the WA08-2433A is 21 dB across 820 MHz to 980MHz.
The input and output return losses are 20 dB typical.
FIG. 1 Typical small signal performance of WA08-2433A
c) Output Power
2
Need a 10 k Ohm pull up resistor to a high potential voltage such as +5 V.
WA08-2433A Performance @ 25 C
-50
-40
-30
-20
-10
0
10
20
30
40
50
800
820
840
860
880
900
920
940
960
980 1,000
Freq (MHz)
S
11,
S
21,
S
22 (
d
B
)
-30
-25
-20
-15
-10
-5
0
5
10
15
20
S11
S21
S22
S12
3
17350 Horizon Trail, SE
Prior Lake, MN 55372
USA
Tel. 1 952 212 8028
Fax: 1 952 447 8028
e-amil: sales@wantcominc.com
www.wantcominc.com
Figure 2 shows the output power vs. input power of WA08-2433A.
FIG. 2 Typical output power at room temperature. FIG. 3 Output IP3 of WA08-2433A.
d) Output IP3
Figure 3 demonstrate the output IP3 performance of WA08-2433A. The minimum IP3 is 38 dBm.
e) Noise Figure
The noise figure of WA08-2433A is 0.60 dB at room temperature and add 0.15 dB at +85 C.
FIG. 4 WA08-2433A noise figure at full temperature FIG. 5 The stability coefficient k of WA08-2433A
f) WA08-2433A Mechanical Outline: WP-1
g) Ordering Information
Model Number
WA08-2433A
h) Small Signal S-Parameters:
!WA08-2433A
!s-parameters at Vds=7~15V, Id=125mA. Last updated 10/13/02.
Vdd=+5.0 ~ +15V, Idd=125 mA
WA08-2433A Pout vs. Pin
-20
-15
-10
-5
0
5
10
15
20
25
30
-30
-25
-20
-15
-10
-5
0
5
10
Pin (dBm)
Po
u
t
Pout(dBm), 0.9 GHz
WA08-2433A IP3 vs. Frequency
30
32
34
36
38
40
42
44
46
48
50
0.80 0.82 0.84 0.86 0.88 0.90 0.92 0.94 0.96 0.98 1.00
Freq (GHz)
IP
3 (
d
B
m
)
IP3 (dBm), Pout =
0dBm
WA08-2433A Noise Figure
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
0.80 0.82 0.84 0.86 0.88 0.90 0.92 0.94 0.96 0.98 1.00
Freq (GHz)
NF
(
d
B)
NF (dB), 25C
NF (dB), -40C
NF (dB), 85C
WA08-2433A Stability Coefficient k
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
Freq (GHz)
k
4
17350 Horizon Trail, SE
Prior Lake, MN 55372
USA
Tel. 1 952 212 8028
Fax: 1 952 447 8028
e-amil: sales@wantcominc.com
www.wantcominc.com
# GHZ s MA R 50
!F(GHz) MAG S11 ANG S11 MAG S21 ANG S21 MAG S12 ANG S12 MAG S22 ANG S22
0.05 0.38 -48.7 0.44 -35.2 0.00183
-69.3 0.99 -20.2
0.1 0.44 -84.2 1.85 -64.2 0.00068
158.4 0.98 -42.3
0.2 0.51 -148.7
8.79 -142.3
0.00526
129.6 0.64 -107.8
0.3 0.62 164.0
14.99 154.2 0.01500
85.3 0.17 -10.2
0.4 0.55 117.5 15.14 84.4 0.02100
19.8 0.40 -86.0
0.5 0.42 77.9 15.23 31.2 0.02700 -25.5
0.31 -119.2
0.6 0.29 41.4 14.92 -18.6 0.03200
-71.4 0.23 -136.1
0.7 0.16 0.6 14.02 -66.2 0.03500
-112.2 0.16 -158.6
0.8 0.04 -18.1
12.85 -112.5 0.04000
-156.9 0.07 170.2
0.9 0.05 26.2 11.56 -157.8 0.04400
164.0 0.02 -88.9
1 0.11
-59.7
10.29
157.6
0.04400 122.8 0.09
-90.4
1.1 0.25 -132.7
8.84 112.3 0.04500
81.4 0.09 -104.3
1.2 0.41 172.5 7.32 68.7 0.04300
39.1 0.10 -94.2
1.3 0.54 126.8 5.99 27.8 0.04000 0.8
0.15
-94.9
1.4 0.60 88.2 5.04 -9.9 0.03900 -35.0
0.21 -111.2
1.5 0.64 54.7 4.89 -51.9 0.04300
-70.4 0.32 -119.9
1.6 0.69 17.8 4.37 -105.5
0.03700
-117.7 0.52 -157.4
1.7 0.66 -25.9
3.64 -147.0
0.03400
-162.2 0.52 164.4
1.8 0.57 -75.5 3.36 169.5 0.03600
150.7 0.51 135.6
1.9 0.43 -136.0
2.88 121.9 0.03700
105.9 0.47 106.2
2
0.39 157.4 3.04 72.6 0.04100
63.0 0.42 90.0
2.1 0.36 91.8 2.80 21.1 0.04100
13.0 0.43 64.1
2.2 0.35 36.5 2.58 -24.0 0.04400
-29.7 0.42 33.9
2.3 0.27 -10.6 2.52 -70.3 0.04400
-74.0 0.39 3.5
2.4 0.16 -57.4
2.43 -115.2
0.04800
-120.6 0.38 -26.3
2.5 0.05 176.8
2.41 -156.1
0.04900
-161.8 0.37 -61.0
2.6 0.17 72.6 2.27 164.4 0.05000 157.1 0.38
-92.8
2.7 0.30 29.4 2.09 128.0 0.04900 117.4 0.40
-124.4
2.8 0.40 -8.1 1.94 90.2 0.05300
81.0 0.42 -154.0
2.9 0.44 -46.8 1.89 52.0 0.05500
48.5 0.45 -178.5
3
0.42 -90.8 1.92 13.6 0.05600
12.1 0.48 158.7
3.5 0.51 -50.5 1.11 171.7 0.03100
172.4 0.63 53.9
4
0.26 131.0 0.59 18.1 0.02400
38.3 0.52 -9.3
4.5 0.19 -151.3
0.36 -164.9
0.04000
-170.8 0.51 -80.1
5
0.64 -107.2
0.05 -56.7 0.00802
174.4 0.32 -131.2
5.5 0.08 -21.2
0.14 -145.8
0.01200
-142.7 0.29 -158.6
6
0.26 -167.2
0.13 -5.8 0.02300 -20.6
0.20 -150.7
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