AH31
24
The Communications Edge
TM
Product Information
High Dynamic Range IF Amplifier
S-parameters (Vd = +5 V, Id = 150 mA, unmatched 50
:
system).
1.0
0.8
Typical Device Data
S11
6
0.
2.
0
6
0.
0.8
1.0
Gain and Max. Stable Gain
Maximum Stable Gain
0.2
S22
Swp Max
1GHz
Swp Max
1GHz
2.
0
0
3.
S21 and MSG (dB)
0
4.
20
10.0
18
10.0
S21
0.2
0.4
0.6
0.8
1.0
2.0
3.0
4.0
5.0
0
10.0
0.2
0.4
0.6
0.8
1.0
2.0
3.0
4.0
5.0
0
14
0
0.2
0.4
0.6
Frequency (GHz)
0.8
1
-0
.4
-0
.4
.0
-2
-0
.6
Swp Min
0.01GHz
-0
.6
.0
-2
Swp Min
0.01GHz
-1.0
-0.8
-0.8
Notes:
Measurements are shown for an unmatched packaged device with the data being de-embedded to the device leads.
The amplifier requires a matching network at the input for proper operation. The amplifier is intrinsically well matched at the
output and ideally should “look” into 50 . Any deviation from this can affect the linearity IP3 performance for the device.
For a tuned circuit for a particular frequency, it is expected that actual gain will be higher, up to the maximum stable gain. The
maximum stable gain is shown in the dashed red line.
The impedance plots are shown from 250 – 1000 MHz, with markers placed at 0.25 – 1.0 GHz in 0.25 GHz increments.
Application Circuit PC Board Layout
Circuit Board Material: .014” FR-4, 4 layers (other layers added for rigidity), .062” total thickness, 1 oz copper
Microstrip line details: width = .024”, spacing = .036”
Typical Device Data
S-Parameters (V
D
= +5 V, I
D
= 150 mA, T = 25 C, calibrated to device leads)
Freq (MHz)
S11 (dB)
S11 (ang)
S21 (dB)
S21 (ang)
S12 (dB)
S12 (ang)
S22 (dB)
-1.0
S22 (ang)
50
100
200
300
400
500
600
700
800
900
1000
-2.72
-2.77
-2.81
-2.87
-2.87
-2.95
-2.91
-2.99
-3.03
-3.14
-3.22
-5.46
-9.52
-18.01
-26.32
-35.19
-43.58
-51.71
-60.03
-67.73
-75.45
-82.88
17.01
16.94
16.86
16.74
16.64
16.50
16.40
16.21
16.05
15.81
15.55
175.91
172.89
166.99
161.33
155.16
149.45
143.72
138.07
132.16
126.99
121.64
-28.54
-28.42
-27.86
-27.14
-26.32
-25.45
-24.66
-23.89
-23.27
-22.71
-22.17
6.89
8.53
14.09
18.38
21.01
22.42
22.73
21.29
19.94
17.74
15.73
-7.44
-7.56
-7.59
-7.63
-7.83
-7.92
-8.00
-8.31
-8.46
-8.77
-8.95
-5.46
-7.93
-13.42
-19.94
-26.57
-32.04
-38.12
-45.01
-50.89
-57.30
-63.63
Specifications and information are subject to change without notice
WJ Communications, Inc
Phone 1-800-WJ1-4401
FAX: 408-577-6621
e-mail: sales@wj.com
Web site: www.wj.com
Page 2 of 7 April 2006
-4
.0
-5.
0
-3
.0
-5.
-4
.0
0
16
-0.
2
2
-0.
-10.0
0.2
5.0
0.
-10.0
-3
.0
0.
22
4
4
¤
£
0
3.
0
4.
5.0
10.0
¢
¢
¢
¢
WJCI [ WJ COMMUNICATION. INC. ]
