ECG040_07 Datasheet, PDF (3/4 Pages) WJ Communication. Inc. – InGaP HBT Gain Block

ECG040
InGaP HBT Gain Block
Recommended Application Circuit
Vcc
Icc = 70 mA
RF IN
C1
Blocking
Capacitor
R4
Bias
Resistor
C4
Bypass
Capacitor
C3
0.018 µF
L1
RF Choke
ECG040
RF OUT
C2
Blocking
Capacitor
Reference
Designator
L1
C1, C2, C4
50
820 nH
.018 µF
Recommended Component Values
Frequency (MHz)
500
900 1900 2200
220 nH 68 nH 27 nH 22 nH
1000 pF 100 pF 68 pF 68 pF
2500
18 nH
56 pF
3500
15 nH
39 pF
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:
Ref. Desig.
L1
C1, C2
C3
C4
R4
Value / Type
39 nH wirewound inductor
56 pF chip capacitor
0.018 µF chip capacitor
Do Not Place
16 Ω 1% tolerance
Size
0603
0603
0603
0805
Recommended Bias Resistor Values
Supply
Voltage
R1 value
Size
6V
17.1 ohms
0805
7V
31.4 ohms
1210
8V
46 ohms
1210
9V
60 ohms
2010
10 V
74 ohms
2010
12 V
103 ohms
2512
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 +6 V. A
1% tolerance resistor is recommended.
Typical Device S-Parameters
S-Parameters (Vdevice = +4.8 V, ICC = 70 mA, T = 25 °C, calibrated to device leads)
Freq (MHz)
S11 (dB)
S11 (ang)
S21 (dB)
S21 (ang)
S12 (dB)
50
-23.31
-179.51
16.19
177.81
-19.40
500
-23.69
170.90
16.04
158.74
-19.30
1000
-23.45
162.60
15.79
138.37
-19.12
1500
-22.70
156.61
15.50
118.53
-19.03
2000
-22.13
148.64
15.16
99.02
-18.71
2500
-19.60
139.22
14.76
79.46
-18.36
3000
-19.24
121.52
14.31
61.06
-18.13
3500
-16.99
115.00
13.86
41.97
-17.78
4000
-15.40
97.66
13.33
23.55
-17.23
4500
-13.81
84.99
12.88
4.82
-16.82
5000
-11.78
64.76
12.19
-13.55
-16.84
5500
-11.08
52.37
11.70
-30.90
-16.58
6000
-9.31
35.87
10.98
-50.95
-16.15
S12 (ang)
-0.03
-5.83
-12.26
-19.16
-26.80
-32.98
-41.04
-51.05
-58.84
-68.93
-79.74
-89.82
-102.41
S22 (dB)
-36.95
-27.31
-21.40
-18.24
-16.09
-14.17
-12.61
-11.16
-10.31
-9.04
-7.54
-7.37
-6.42
Device S-parameters are available for download off of the website at: http://www.wj.com
S22 (ang)
-170.80
-130.75
-141.51
-153.77
-175.02
167.68
152.88
130.54
115.55
97.41
76.41
64.41
46.46
Specifications and information are subject to change without notice
WJ Communications, Inc • Phone 1-800-WJ1-4401 • FAX: [phone] • e-mail: [e-mail] • Web site: www.wj.com
Page 3 of 4 April 2007