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MGA-31389 데이터시트(PDF) 10 Page - AVAGO TECHNOLOGIES LIMITED

부품명 MGA-31389
부품 상세설명  0.1W High Gain Driver Amplifier
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제조업체  AVAGO [AVAGO TECHNOLOGIES LIMITED]
홈페이지  http://www.avagotech.com
Logo AVAGO - AVAGO TECHNOLOGIES LIMITED

MGA-31389 데이터시트(HTML) 10 Page - AVAGO TECHNOLOGIES LIMITED

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Application Circuit Description and Layout
Bill of Materials
Circuit
Symbol
Size
Description
For 0.45 GHz (1)
For 0.9 GHz (2)
For 1.5 GHz (3)
Value
Manufacturer
Value
Manufacturer
Value
Manufacturer
C1
0402
10 pF
Murata
3.0 pF
Murata
3.9 pF
Murata
C2
0402
0.1
mF
Murata
0.1
mF
Murata
0.1
mF
Murata
C3
0603
2.2
mF
Murata
2.2
mF
Murata
2.2
mF
Murata
C7
0402
100 pF
Murata
100 pF
Murata
100 pF
Murata
C8
0402
15 pF
Murata
5.6 pF
Murata
3 pF
Murata
L1
0402
39 nH
Murata
12 nH
Murata
3.9 nH
Murata
Figure 34. Circuit diagram
Figure 35. Demoboard
DCin
13X
RFin
RFout
Input Matching Circuit
1.
Γ_mag = 0.055, G_ang = -94.4°
2.
Γ_mag = 0.070, G_ang = -98.9°
3.
Γ_mag = 0.095, G_ang = -117.1°
Output Matching Circuit
1.
Γ_mag = 0.066, G_ang = -21.4°
2.
Γ_mag = 0.152, G_ang = 15.1°
3.
Γ_mag = 0.275, G_ang = 60.1°
Figure 36. Input and output tuned Gamma location for 450MHz (1), 900MHz (2) and 1500MHz (3)
For best performance, MGA-31389 is an input and output prematched driver amplifier. To bias MGA-31389, a +5V supply
(Vdd) is connected to the output pin through a RF choke, L1 (which isolates the inband signal from the DC supply). The
bypass capacitor helps to eliminate out of low band frequency signals from the power supply, C3, C2 and C1. Blocking
capacitors are required for its input (C7) and output (C8), to isolate the supply voltage from preceeding and succeed-
ing circuits. C7 also plays a part in input tuning to improve input return loss while L1 and C8 help in tuning output. The
recommended output tuning is for achieving best OIP3, while meeting typical specifications for other parameters.
L1
RFout
C8
C7
RFin
Vdd
C3
C2
C1
13X
C11
C10
AVAGO
TECHNOLOGIES
IN
Jul 2009
REV 3.2
SOT-89
L3
C9
C7
OUT
C1
L1
L2
L4
C4
C6
C5
C8
C12
C3
C2
CTxx


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