mga-684p8 Avago Technologies, mga-684p8 Datasheet - Page 4

• Manufacturer Part Number: mga-684p8
• Description: Low Noise Active Bias Low Noise Ampliier
• Manufacturer: Avago Technologies

Demo Board Layout
Figure 5. Demo Board Layout Diagram
– Recommended PCB material is 10 mils Rogers RO4350.
– Suggested component values may vary according to
Table 1. Component list for 1.9 GHz matching
Notes:
C2 is a blocking capacitor
L2 output match for OIP3
L1, C1 and L3 are used for IRL matching.
C3, C4, C5, C6 are bypass capacitors
R1 is stabilizing resistor
Rbias is the biasing resistor
4
Part
C1
C2
C3
C4
C5
C6
L1
L2
L3
Rbias
R1
R2
Jul 10
Avago
Technologies
layout and PCB material.
L3
C3
C1
C5
Size
0402
0402
0402
0402
0402
0805
0402
0402
0402
0402
0402
0402
R1
L1
Rbias
C6
R2
L2
C2
Value
3.9 pF
100 pF
10 pF
22 pF
10 nF
4.7 F
18 nH
6.8 nH
4.7 nH
6.8 KOhm
49.9 Ohm
0 Ohm
C4
Detail Part Number
Murata GRM15
Murata GRM15
Murata GRM15
Murata GRM15
Murata GRM15
Murata GRM15
Coilcraft CS0402
Toko FHL1005
Coilcraft CS0402
KOA RK73
KOA RK73
KOA RK73
Demo Board Schematic
Figure 6. Demo Board Schematic Diagram
Notes:
 The schematic is shown with the assumption that similar PCB is used
 Detail of the components needed for this product is shown in Table 1.
RFin
L3
for both MGA-683P8 and MGA-68P8.
4.7nH
10pF
C3
10nF
C5
18nH
L1
C1
3.9pF
R1
49.9Ω
[3]
[4]
[1]
[2]
Rbias
6.8KΩ
L2
6.8nH
R2
0Ω
[8]
[7]
[6]
[5]
Vdd
100pF
C2
C6
4.7uF
C4
22pF
RFout