WJA1025
Vcc = 5.00V
Icc = 60 mA
R4
0
Ω
C3
Bypass
Capacitor
+5V Active-Bias InGaP HBT Gain Block
Application Circuit
RF IN
R1
0
Ω
L1
RF Choke
RF OUT
WJA1025
C1
Blocking
Capacitor
R2
0
Ω
C2
Blocking
Capacitor
Recommended Component Values
(1)
Ref. Name Value / Type
L1
470 nH ferrite core wire wound inductor
(2)
C1, C2
1000 pF NPO chip capacitor
C3
0.018
μF
chip capacitor
R1, R2, R4 0
Ω
(3)
C4, C5, C6, Do Not Place
(3)
R3, R5, R6,
R7, R8
1.
2.
3.
Size
0805
0603
0603
0603
The listed values are contained on the evaluation board to achieve optimal broadband performance
For lower cost and performance (500 – 4000 MHz) option use 18 nH air core wire wound inductor.
Place holders for the 0Ω resistors and “Do Not Place” references are not needed for final design.
Typical Device Data
S-Parameters (V
device
= +5 V, I
CC
= 60 mA, T = 25
°C,
calibrated to device leads)
Freq (GHz)
S11 (dB)
S11 (ang)
S21 (dB)
S21 (ang)
S12 (dB)
10
-12.85
-77.05
22.11
164.87
-25.13
50
-14.19
-152.32
19.58
168.33
-22.87
100
-14.21
-165.96
19.35
168.73
-22.76
200
-14.11
-173.50
19.19
163.14
-22.64
400
-13.61
-177.58
19.15
149.92
-22.60
600
-12.87
178.85
19.00
135.94
-22.62
800
-12.55
173.55
18.77
121.91
-22.51
1000
-12.61
164.24
18.61
108.26
-22.49
1200
-12.86
152.84
18.29
93.65
-22.48
1400
-13.00
142.18
17.95
80.02
-22.35
1600
-13.52
132.80
17.67
65.69
-22.41
1800
-14.61
126.51
17.30
51.45
-22.28
2000
-17.13
119.56
16.91
37.76
-22.28
2200
-22.24
110.52
16.34
23.48
-22.26
2400
-39.41
104.25
15.69
9.57
-22.24
2600
-26.52
-105.93
15.05
-4.25
-22.18
2800
-18.85
-119.90
14.26
-17.37
-22.12
3000
-14.60
-131.55
13.41
-31.11
-21.94
3200
-11.79
-141.13
12.49
-43.51
-21.88
3400
-9.85
-148.69
11.44
-56.00
-21.80
3600
-8.43
-157.87
10.43
-67.63
-21.70
3800
-7.44
-168.60
9.52
-78.22
-21.49
4000
-6.55
-179.99
8.41
-89.17
-21.49
S12 (ang)
20.66
5.69
2.34
-0.94
-4.22
-8.09
-11.63
-14.60
-17.94
-21.86
-25.23
-28.01
-32.24
-35.27
-38.29
-41.60
-45.32
-49.10
-53.46
-56.71
-60.90
-64.48
-68.82
S22 (dB)
-8.70
-17.97
-20.84
-21.65
-20.44
-18.63
-16.59
-14.32
-12.60
-11.42
-10.77
-10.30
-9.72
-9.14
-8.51
-8.22
-8.12
-8.05
-7.85
-7.62
-7.20
-7.01
-7.07
S22 (ang)
-47.21
-102.07
-121.78
-132.99
-134.99
-139.25
-142.32
-147.99
-153.76
-159.72
-166.91
-174.79
177.45
169.23
162.75
156.67
150.77
143.93
138.14
131.91
127.90
126.16
122.98
Device S-parameters are available for Download from the website at: http://www.wj.com
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 3 of 4
Dec 2007
WJCI [ WJ COMMUNICATION. INC. ]
