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MGA-631P8-BLKG

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18
7
MGA-631P8 Typical Performance for 450 Mz Matching
[1]
T
A
= +25 °C, Vd = 4V, Id = 54mA
Figure 23. Gain and NF Vs Frequency
Figure 24. OIP3 vs Frequency
Figure 25. Input and output Return Loss vs Frequency
MGA-631P8 Typical Performance for 1.5 GHz Matching
[2]
T
A
= +25 °C, Vd = 4V, Id = 54mA
Figure 26. Gain and NF vs Frequency
Figure 27. OIP3 vs Frequency
Figure 28. Input and output Return Loss vs Frequency
Notes:
1. For Figure 22, 23 and 24, measurements obtained using demo board described in Figure28 and Table 1, List 2.
2. For Figure 25, 26 and 27, measurements obtained using demo board described in Figure28 and Table 1, List 3.
0
5
10
15
20
25
30
35
0.4 0.425 0.45 0.475 0.5
Frequency (GHz)
OIP3 (dBm)
OIP3
10
11
12
13
14
15
16
17
18
1.3 1.4 1.5 1.6 1.7
Frequency (GHz)
Gain (dB)
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
NF (dB)
G
a
i
n
NF
10
15
20
25
30
35
40
45
1.30 1.35 1.40 1.45 1.50 1.55 1.60 1.65 1.70
Frequency (GHz)
OIP3 (dBm)
-35
-30
-25
-20
-15
-10
-5
0
1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0
Frequency (GHz)
Input Return Loss (dB)
-14
-12
-10
-8
-6
-4
-2
0
Output Return Loss (dB)
Input Return Loss
Output Return Loss
10
12
14
16
18
20
22
24
26
0.35 0.38 0.40 0.43 0.45 0.48 0.50 0.53 0.55
Frequency (GHz)
Gain (dB)
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
NF (dB)
Gain
NF
-45
-40
-35
-30
-25
-20
-15
-10
-5
0
0.3 0.35 0.4 0.45 0.5 0.55 0.6 0.65
Frequency (GHz)
Input Return Loss (dB)
-27
-24
-21
-18
-15
-12
-9
-6
-3
0
Output Return Loss (dB)
Input Return Loss
Out
p
ut Return Loss
8
Demo Board Layout
Figure 30. Demo Board Schematic.
Note: This demo board is used for measuring Electrical Specications and plots of Fig. 4 to
Fig. 24. Table 1, List 1 shows the components values used while measuring Fig. 4 to Fig.
21. Table 1, List 2 shows the components values used while measuring Fig. 22 to Fig. 24.
Figure 29. Demo Board Layout Diagram
- Recommended PCB material is 10 mils Rogers RO4350.
- Suggested component values may vary according to layout and PCB material.
Demo Board Schematic for Table 1, List 1 (900 MHz Match-
ing) and List 2 (450 MHz Matching).
Vd
RFin
L1
C2
C1
L2
R1
C3
C4
C5
C6
Vbias
Bias
FB1
RFgnd
RFin
RFout
Gnd
RFout
Rbias
C7
9
Figure 31. Demo Board Schematic with additional shunt inductor, L3, at RFout. This demo board is used for measuring
plots of Fig. 25 to Fig. 27. Table1, List 3 shows the components values.
Demo Board Schematic for Table 1, List 3 (1.5 GHz Matching)
Vd
RFin
L1
C2
C1
L2
R1
C3
C4
C5
C6
Vbias
Bias
L3
FB1
RFgnd
RFin
RFout
Gnd
RFout
Rbias
C7
Figure 32. Demo Board Schematic with additional C8 and R3. Table 1, List4 shows the component values.
Demo Board Schematic for Table 1, List 4 (700MHz Matching)
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18

MGA-631P8-BLKG

Mfr. #:
Buy MGA-631P8-BLKG
Manufacturer:
Broadcom / Avago
Description:
RF JFET Transistors GaAs RFIC LNA
Lifecycle:
New from this manufacturer.
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