AG503-89
InGaP HBT Gain Block
Product Information
Typical Device RF Performance
Supply Bias = +8 V, Rbias = 44 Ω, Icc = 45 mA
Output IP3 vs. Frequency
Gain vs. Frequency
Output IP2 vs. Frequency
22
35
30
25
20
15
45
40
35
30
25
20
18
16
14
-40 C
0.5
+25 C
1.5
85 C
2.5
+25 C
+85 C
600
-40 C
800
-40 C
+25 C
+85 C
12
0
1
2
3
0
200
400
1000
0
1
2
3
4
Frequency (GHz)
Frequency (GHz)
Frequency (MHz)
P1dB vs. Frequency
Noise Figure vs. Frequency
20
15
10
5
5
4
3
2
1
0
-40 C
+25 C
2
+85 C
3.5
-40 C
+25 C
1.5
+85 C
2.5
0
0
0.5
1
1.5
2.5
3
4
0
0.5
1
2
3
Frequency (GHz)
Frequency (GHz)
Vcc
Application Circuit
Icc = 45 mA
R1
Bias
Resistor
C4
Bypass
Capacitor
C3
0.018 µF
L1
RF Choke
RF IN
RF OUT
AG503-89
C2
C1
Blocking
Capacitor
Blocking
Capacitor
Recommended Component Values
Reference
Recommended Bias Resistor Values
Supply
Frequency (MHz)
R1 value
Size
Designator
L1
Voltage
6 V
50
500
900
1900
27 nH
68 pF
2200
22 nH
68 pF
2500
18 nH
56 pF
3500
15 nH
39 pF
820 nH
.018 µF
220 nH
1000 pF
68 nH
100 pF
22.2 ohms
44.4 ohms
67 ohms
89 ohms
111 ohms
156 ohms
0603
C1, C2, C4
7 V
0805
1206
1210
1210
2010
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:
8 V
9 V
10 V
12 V
Ref. Desig.
Value / Type
Size
L1
39 nH wirewound inductor
56 pF chip capacitor
0.018 µF chip capacitor
Do Not Place
0603
0603
0603
C1, C2
C3
C4
R1
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.
1% tolerance resistor is recommended.
A
0805
22.1 Ω 1% tolerance
Specifications and information are subject to change without notice
Page 3 of 6 June 2005
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