AG602-89
InGaP HBT Gain Block
Product Information
Typical Device RF Performance (cont’d)
Supply Bias = +8 V, R
bias
= 38
Ω
, I
cc
= 75 mA
Gain vs. Frequency
16
14
12
10
8
6
0
-40 C
1
+25 C
+85 C
3
4
Output IP3 vs. Frequency
Output IP2 vs. Frequency
40
35
30
25
-40 C
+25 C
+85 C
50
45
40
35
-40 C
+25 C
+85 C
OIP3 (dBm)
20
0
0.5
1
1.5
2
2.5
3
Frequency (GHz)
P1dB vs. Frequency
OIP2 (dBm)
Gain (dB)
30
2
Frequency (GHz)
0
200
400
600
800
1000
Frequency (MHz)
Noise Figure vs. Frequency
20
15
10
5
-40 C
+25 C
+85 C
6
5
NF (dB)
4
3
2
-40 C
+25 C
+85 C
P1dB (dBm)
0
0
0.5
1
1.5
2
2.5
3
3.5
4
Frequency (GHz)
1
0
0.5
1
1.5
2
2.5
3
Frequency (GHz)
Vcc
Icc = 75 mA
Application Circuit
R1
Bias
Resistor
C4
Bypass
Capacitor
C3
0.018 µF
L1
RF Choke
RF IN
AG602-89
C1
Blocking
Capacitor
C2
Blocking
Capacitor
RF OUT
Recommended Component Values
Reference
Designator
50
500
L1
820 nH
220 nH
C1, C2, C4
.018 µF
1000 pF
Ref. Desig.
L1
C1, C2
C3
C4
R1
Frequency (MHz)
900
1900
2200
68 nH
27 nH
22 nH
100 pF
68 pF
68 pF
Size
0603
0603
0603
0805
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:
Value / Type
39 nH wirewound inductor
56 pF chip capacitor
0.018
µF
chip capacitor
Do Not Place
10.0
Ω
1% tolerance
Recommended Bias Resistor Values
S upply
R1 value
S ize
Voltage
6V
11.2 ohms
0805
7V
24.5 ohms
1210
8V
38 ohms
1210
9V
51 ohms
2010
10 V
65 ohms
2010
12 V
91 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.
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 6 June 2005
WJCI [ WJ COMMUNICATION. INC. ]
