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參數(shù)資料
| 型號(hào)： | MGA-53543-TR2 |
| 廠商： | AGILENT TECHNOLOGIES INC |
| 元件分類： | 放大器 |
| 英文描述： | 50 MHz - 6000 MHz RF/MICROWAVE WIDE BAND LOW POWER AMPLIFIER |
| 封裝： | PLASTIC, SC-70, SOT-343, 4 PIN |
| 文件頁數(shù)： | 8/14頁 |
| 文件大?。?/td> | 181K |
| 代理商： | MGA-53543-TR2 |
8
For noise figure critical or higher
frequency applications, the
additional cost of PTFE/glass
dielectric materials may be
warranted to minimize transmis-
sion line loss at the amplifier’s
input.
Application Example
The demonstration circuit board
for the MGA-53543 is shown in
Figure 7. This simple two-layer
board contains microstripline on
the topside and a solid metal
ground plane on the backside
with all RF traces having charac-
teristic impedance of 50
.
Multiple 0.02" vias are used to
bring the ground to the topside
of the board and help reduce
ground inductance.
The PCB is fabricated on 0.031"
thick Getek GR200D dielectric
material with dielectric constant
of 4.2.
IN
OUT
Vd
SE 12/01
MGA - 5X
Figure 7. MGA-53453 PCB Layout.
1900 MHz HLA Design
The following describes a typical
application for the MGA-53543 as
used in a PCS 1900 MHz band
radio receiver optimized for
maximum linearity. Steps include
matching the input and output as
well as providing a DC bias while
maintaining acceptable stability,
gain and noise figure.
As described earlier, a pure
linearity match entails matching
only to
Γ
s
and
Γ
L
, thus sacrificing
some NF and Gain. This tradeoff
is explained below and quanti-
fied in Figures 8 and 9.
Using the device S-parameters at
1900 MHz, the minimum noise
figure possible, whilst matching
the input to
Γ
S
, is shown to be
1.7 dB.
NF = 1.5 dB
NF = 1.6 dB
NF = 1.7 dB
Γ
opt – Optimum NF match
Γ
S – Optimum linearity match
the input and output match, the
maximum gain is taken from two
sets of circles. One is centered
around S11 and the other is
centered on S22.
Thus the
maximum attainable gain is the
lesser of two circles which
completely enclose
Γ
s
or
Γ
L
. For
example, in Figure 9 the 16.1 dB
input gain circle completely
encloses
Γ
s
, but the smallest
circle that encloses
Γ
L
is 15.9 dB.
Thus the maximum gain is the
weakest link or 15.9 dB.
Ga = 15.9 dB
Ga = 16.1 dB
Ga = 16.2 dB
Ga = 16.1 dB
Ga = 16.2 dB
S11
S22
Γ
L
Γ
S
Figure 9. Input and output gain circles.
To accomplish the above perfor-
mance, a high pass configuration
consisting of a 3.3 nH inductor
and a 2.2 pF capacitor is used for
the input match. Unlike a low
pass configuration, a high pass
configuration provides not only
the impedance transfer required,
but also provides excellent
stability for the demo board by
diminishing low frequency gain.
No matching is required for the
output, but a good rule of thumb
to use when biasing is to limit
series reactance to less than 5
and keep shunt reactance above
500
. Therefore choosing an RFC
of 47 nH, which has a reactance
of 561
at 1.9 GHz, helps isolate
the DC supply from inband
signals. If any high frequency
signal is created or enters the DC
supply, a 150 pF capacitor is
ready to short it to ground. An
8.2 pF capacitor serves primarily
as a DC block, but also helps the
output match.
The completed 1900 MHz
amplifier schematic is shown in
Figure 10.
2.2
0.1
μ
F
+5V
47 nH
3.3 nH
3
4
1
2
8.2 pF
150 pF
2.2 pF
RF
in
RF
out
53
Figure 10. Schematic for a 1900 MHz stable
circuit.
Included with the schematic is a
complete RF layout (Figure 15)
which includes placement of all
components and SMA connec-
tors. A list of part numbers and
manufacturer used is given
below in Table 3.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MGA-53543-TR2G | 功能描述:射頻放大器 5 SV 15.4 dB RoHS:否 制造商:Skyworks Solutions, Inc. 類型:Low Noise Amplifier 工作頻率:2.3 GHz to 2.8 GHz P1dB:18.5 dBm 輸出截獲點(diǎn):37.5 dBm 功率增益類型:32 dB 噪聲系數(shù):0.85 dB 工作電源電壓:5 V 電源電流:125 mA 測(cè)試頻率:2.6 GHz 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 封裝:Reel |
| MGA-53589 | 制造商:AVAGO 制造商全稱:AVAGO TECHNOLOGIES LIMITED 功能描述:50MHz to 3GHz High Linear Amplifier Lead-free Option Available |
| MGA-53589-BLKG | 功能描述:射頻放大器 Amplifier RFIC GaAs RoHS:否 制造商:Skyworks Solutions, Inc. 類型:Low Noise Amplifier 工作頻率:2.3 GHz to 2.8 GHz P1dB:18.5 dBm 輸出截獲點(diǎn):37.5 dBm 功率增益類型:32 dB 噪聲系數(shù):0.85 dB 工作電源電壓:5 V 電源電流:125 mA 測(cè)試頻率:2.6 GHz 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 封裝:Reel |
| MGA-53589-TR1G | 功能描述:射頻放大器 Amplifier RFIC GaAs RoHS:否 制造商:Skyworks Solutions, Inc. 類型:Low Noise Amplifier 工作頻率:2.3 GHz to 2.8 GHz P1dB:18.5 dBm 輸出截獲點(diǎn):37.5 dBm 功率增益類型:32 dB 噪聲系數(shù):0.85 dB 工作電源電壓:5 V 電源電流:125 mA 測(cè)試頻率:2.6 GHz 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 封裝:Reel |
| MGA-545P8 | 制造商:Avago Technologies 功能描述:IC AMP RF E-PHEMT LPCC8 3.3V 制造商:Avago Technologies 功能描述:IC, AMP, RF E-PHEMT, LPCC8, 3.3V |
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