ECG004 WJ Communications, Inc., ECG004 Datasheet - Page 3

• Manufacturer Part Number: ECG004
• Description: Ingap Hbt Gain Block
• Manufacturer: WJ Communications, Inc.

WJ Communications, Inc x Phone 1-800-WJ1-4401 x FAX: [phone] x e-mail: [e-mail] x Web site: www.wj.com
1. The proper values for the components are dependent upon the intended frequency of operation.
2. The following values are contained on the evaluation board to achieve optimal broadband performance:
C1, C2, C4
Designator
Reference
L1
S-Parameters (V
Freq (MHz)
RF IN
1000
1500
2000
2500
3000
3500
4000
4500
5000
5500
6000
500
ECG004
InGaP HBT Gain Block
50
Capacitor
Blocking
Ref. Desig.
L1
C1, C2
C3
C4
R4
C1
.018 µF
820 nH
50
device
ECG004
-30.10
-31.20
-28.45
-23.62
-19.37
-16.79
-14.66
-12.59
-10.75
S11 (dB)
-8.99
-7.43
-6.05
-4.96
= +3.4 V, I
Resistor
RF Choke
Recommended Component Values
Capacitor
1000 pF
0.018 µF
220 nH
Device S-parameters are available for download off of the website at: http://www.wj.com
Bypass
Value / Type
39 nH wirewound inductor
56 pF chip capacitor
0.018 PF chip capacitor
Do Not Place
45.3: 1% tolerance
Bias
500
Icc = 35 mA
R4
C3
C4
L1
CC
Vcc
Capacitor
-160.53
-166.34
Blocking
177.98
178.03
176.50
155.39
135.92
114.48
S11 (ang)
= 35 mA, T = 25 qC, calibrated to device leads)
95.65
77.47
62.98
49.23
37.32
Recommended Application Circuit
C2
100 pF
68 nH
900
Typical Device S-Parameters
Frequency (MHz)
RF OUT
S21 (dB)
17.55
17.28
16.78
16.22
15.77
15.17
14.46
13.72
12.93
12.01
11.08
10.00
8.98
27 nH
68 pF
1900
Size
0603
0603
0603
0805
22 nH
68 pF
2200
177.81
158.24
138.41
119.90
102.19
S21 (ang)
-12.12
-25.64
84.04
66.94
49.78
33.56
17.53
2.33
18 nH
56 pF
2500
-19.87
-19.74
-19.41
-19.00
-18.38
-18.05
-17.64
-17.38
-17.22
-17.17
-17.21
-17.44
-17.72
S12 (dB)
15 nH
39 pF
3500
The Communications Edge
Specifications and information are subject to change without notice
S12 (ang)
-14.50
-21.06
-27.87
-35.91
-43.77
-52.19
-61.28
-69.75
-77.89
-0.31
-2.46
-5.05
-9.45
The proper value for R1 is dependent upon the supply
voltage and allows for bias stability over temperature.
WJ recommends a minimum supply bias of +5 V. A
1% tolerance resistor is recommended.
Voltage
Supply
Recommended Bias Resistor Values
10 V
12 V
5 V
6 V
8 V
9 V
-39.30
-28.23
-21.58
-17.50
-14.46
-12.24
-10.51
S22 (dB)
-9.02
-7.58
-6.36
-5.29
-4.29
-3.45
Product Information
45.7 ohms
74.3 ohms
131 ohms
160 ohms
189 ohms
246 ohms
R1 value
-168.77
-118.21
-132.33
-151.05
-171.81
167.01
147.79
129.31
112.01
S22 (ang)
95.56
81.52
68.48
55.77
Page 3 of 4 April 2006
TM
0805
0805
1210
1210
2010
2010
Size