WJA1005
+5V Active-Bias InGaP HBT Gain Block
Vcc = +5V
Icc = 63 mA
Application Circuit
R4
0 Ω
C3
Bypass
Capacitor
L1
RF Choke
RF IN
RF OUT
WJA1005
R1
0 Ω
R2
0 Ω
C2
Blocking
Capacitor
C1
Blocking
Capacitor
Recommended Component Values(1)
Ref. Name
L1
C1, C2
C3
Value / Type
Size
39 nH wire wound inductor
56 pF chip capacitor
0.018 μF chip capacitor
0 Ω(2)
0805
0603
0603
0603
R1, R2, R4
C4, C5, C6, Do Not Place(2)
R3, R5, R6,
R7, R8
1. The listed values are contained on the evaluation board to achieve optimal broadband performance
2. Place holders for the 0Ω resistors and “Do Not Place” references are not needed for final design.
Typical Device Data
S-Parameters (Vdevice = +5 V, ICC = 63 mA, T = 25 °C, calibrated to device leads)
Freq (MHz)
S11 (dB)
S11 (ang)
-56.14
-122.70
-144.14
-155.25
-164.47
179.85
166.54
153.51
140.37
127.34
112.63
97.06
S21 (dB)
S21 (ang)
167.34
169.76
168.56
154.84
140.24
126.14
113.47
100.20
88.38
S12 (dB)
-24.73
S12 (ang)
19.83
6.55
S22 (dB)
-8.57
S22 (ang)
-36.56
-48.26
-51.35
-80.66
-104.12
-121.15
-135.94
-151.88
-165.66
-177.78
173.18
166.25
159.75
149.54
138.19
128.63
121.60
118.03
116.51
113.23
105.37
95.39
10
50
100
300
500
-12.48
21.79
-19.86
-21.33
-19.96
-18.08
-15.94
-14.10
-12.51
-11.21
-10.41
-9.86
-9.42
-9.03
-8.63
-8.38
-8.08
-8.08
-8.25
-8.60
19.82
19.58
19.25
18.82
18.47
17.86
17.37
16.81
16.25
15.71
15.28
14.82
14.41
14.00
13.49
12.90
12.25
11.70
11.21
10.69
9.98
-23.02
-22.89
-22.62
-22.23
-21.76
-21.56
-21.20
-21.09
-20.94
-20.94
-20.92
-20.90
-20.83
-20.86
-20.84
-20.89
-20.70
-20.46
-20.29
-19.97
-19.90
-19.88
-20.10
-19.97
-17.20
-18.50
-15.98
-12.76
-10.48
-9.45
-8.62
-8.02
-7.26
-6.51
-6.10
-6.00
-5.89
-5.71
-5.42
-5.03
-4.75
-4.76
-5.03
-5.25
-5.05
-4.50
-4.02
-3.64
3.84
3.34
2.46
0.85
-1.99
-4.74
-8.55
-11.47
-14.44
-17.29
-19.23
-22.46
-25.05
-27.89
-29.87
-32.43
-33.53
-35.50
-38.43
-42.75
-47.28
-50.97
-53.31
700
900
1100
1300
1500
1700
1900
2100
2300
2500
2700
2900
3100
3300
3500
3700
3900
4100
4300
4500
76.71
65.84
55.32
44.20
32.87
21.74
9.86
-1.47
-11.44
-22.00
-32.03
-44.10
-55.83
-68.54
-79.46
-88.68
85.05
72.88
62.58
51.97
39.29
24.51
10.94
-2.65
-15.50
-27.09
-44.28
-64.40
-89.25
-9.44
-10.54
-11.65
-12.77
-13.51
-14.93
8.97
7.90
7.02
87.35
83.72
84.42
Specifications and information are subject to change without notice
Page 3 of 4 May 2007
WJ Communications, Inc • Phone 1-800-WJ1-4401 • FAX: 408-577-6621 • e-mail: sales@wj.com • Web site: www.wj.com
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