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부품번호 | MGA-81563 기능 |
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기능 | 0.1- 6 GHz 3 V / 14 dBm Amplifier | ||
제조업체 | Agilent(Hewlett-Packard) | ||
로고 | |||
전체 12 페이지수
0.1 – 6 GHz 3 V, 14 dBm Amplifier
Technical Data
MGA-81563
Features
• +14.8 dBm P1dB at 2.0 GHz
+17 dBm Psat at 2.0 GHz
• Single +3V Supply
• 2.8 dB Noise Figure at
2.0␣ GHz
• 12.4 dB Gain at 2.0 GHz
• Ultra-miniature Package
• Unconditionally Stable
Applications
• Buffer or Driver Amp for
PCS, PHS, ISM, SATCOM
and WLL Applications
• High Dynamic Range LNA
Simplified Schematic
INPUT
3
OUTPUT
and Vd
6
BBIIAASS
GND
1, 2, 4, 5
Surface Mount Package
SOT-363 (SC-70)
Pin Connections and
Package Marking
GND 1
GND 2
INPUT 3
6
OUTPUT
and Vd
5 GND
4 GND
Note: Package marking provides
orientation and identification.
Description
Hewlett-Packard’s MGA-81563 is
an economical, easy-to-use GaAs
MMIC amplifier that offers
excellent power and low noise
figure for applications from 0.1 to
6 GHz. Packaged in an ultra-
miniature SOT-363 package, it
requires half the board space of a
SOT-143 package.
The output of the amplifier is
matched to 50 Ω (better than
2.1:1␣ VSWR) across the entire
bandwidth. The input is partially
matched to 50 Ω (better than
2.5:1␣ VSWR) below 4 GHz and
fully matched to 50 Ω (better than
2:1 VSWR) above. A simple series
inductor can be added to the input
to improve the input match below
4 GHz. The amplifier allows a
wide dynamic range by offering a
2.7 dB NF coupled with a +27 dBm
Output IP3.
The circuit uses state-of-the-art
PHEMT technology with proven
reliability. On-chip bias circuitry
allows operation from a single
+3␣ V power supply, while resistive
feedback ensures stability (K>1)
over all frequencies and
temperatures.
5965-9684E
6-196
MGA-81563 Typical Scattering Parameters[1], TC = 25°C, ZO = 50 Ω, Vd = 3 V
Freq.
GHz
S11
Mag Ang
S21
dB Mag Ang
S12 S22
dB Mag Ang Mag Ang
0.1
0.57 -16 13.02 4.48 172
-25 0.051 312 0.43 -14
0.2
0.52 -13 12.58 4.258 171
-25 0.057 17 0.38 -13
0.5
0.49 -16 12.35 4.15 164
-25 0.059 8
0.35 -9
1.0
0.48 -28 12.18 4.06 152
-25 0.061 5
0.35 -15
1.5
0.47 -40 12.00 3.98 140
-25 0.063 5
0.34 -22
2.0
0.45 -52 11.82 3.90 128
-24 0.067 4
0.34 -30
2.5
0.43 -63 11.63 3.81 116
-24 0.070 2
0.32 -39
3.0
0.39 -75 11.37 3.70 104
-24 0.074 -1
0.31 -46
3.5
0.35 -87 11.11 3.59 93
-22 0.077 -4
0.29 -53
4.0
0.32 -100 10.85 3.49 81
-22 0.081 -7
0.27 -60
4.5
0.28 -114 10.58 3.38 70
-22 0.083 -11 0.25 -67
5.0
0.25 -130 10.30 3.27 59
-21 0.087 -15 0.23 -74
5.5
0.22 -146 10.02 3.17 49
-21 0.09 -20 0.21 -81
6.0
0.20 -166 9.75 3.07 38
-21 0.091 -25 0.19 -90
6.5
0.18 174 9.46 2.97 27
-21 0.093 -30 0.17 -96
7.0
0.17 150 9.12 2.86 16
-21 0.094 -36 0.14 -100
K
Factor
1.47
1.58
1.64
1.65
1.65
1.65
1.66
1.69
1.73
1.77
1.82
1.85
1.91
1.93
1.98
2.05
MGA-81563 Typical Noise Parameters[1]
TC = 25°C, ZO = 50 Ω, Vd = 3 V
Frequency
NFO
Γopt
GHz
dB
Mag.
Ang.
Rn / 50 Ω
—
0.5 2.90 0.16
1 1.57
1.0 2.80 0.15 17 0.96
1.5 2.70 0.14 28 0.75
2.0 2.69 0.14 37 0.41
2.5 2.68 0.13 44 0.39
3.0 2.68 0.11 50 0.38
3.5 2.68 0.09 56 0.36
4.0 2.69 0.06 65 0.34
4.5 2.69 0.03 76 0.33
5.0
2.68 0.01
137 0.32
5.5 2.67 0.02 -135 0.32
6.0 2.67 0.05 -109 0.32
6.5 2.71 0.07 -95 0.33
7.0 2.77 0.09 -78 0.36
Note:
1. Reference plane per Figure 11 in Applications Information section.
6-199
4페이지 Although the input terminal of the
MGA-81563 is at ground potential,
it is not a current sink. If the input
is connected to a preceding stage
that has a voltage present, the use
of the DC blocking capacitor (C1)
is required.
RF
Input C1
L1
C2 Vd
C4
RFC
RF
C2 Output
Figure15.SchematicDiagram.
DC bias is applied to the MGA-
81563 through the RF Output pin.
An inductor (RFC), or length of
high impedance transmission line
(preferably λ/4 at the band
center), is used to isolate the RF
from the DC supply.
The power supply is bypassed to
ground with capacitor C3 to keep
RF off of the DC lines and to
prevent gain dips or peaks in the
response of the amplifier.
bias lines that could cause oscilla-
tion. C4 will not normally be
needed unless several stages are
cascaded using a common power
supply.
When multiple bypass capacitors
are used, consideration should be
given to potential resonances. It is
important to ensure that the
capacitors when combined with
additional parasitic L’s and C’s on
the circuit board do not form
resonant circuits. The addition of
a small value resistor in the bias
supply line between bypass
capacitors will often “de-Q” the
bias circuit and eliminate the
effect of a resonance.
The value of the DC blocking and
RF bypass capacitors (C1 – C3)
should be chosen to provide a
small reactance (typically
<␣ 5␣ ohms) at the lowest operating
frequency. The reactance of the
RF choke (RFC) should be high
(e.g., several hundred ohms) at
the lowest frequency of operation.
An additional bypass capacitor,
C4, may be added to the bias line
near the Vd connection to elimi-
nate unwanted feedback through
The MGA-81563’s response at low
frequencies is limited to approxi-
mately 100 MHz by the size of
capacitors integrated on the
MMIC chip.
H
C1 L1
IN
MGA-8-A
OUT
C2
RFC
C3
+V
C4
Figure 17. Complete Application Circuit.
6-202
The input of the MGA-81563 is
partially matched internally to
50␣ Ω. Without external matching
elements, the input VSWR of the
MGA-81563 is 3.0:1 at 300 MHz
and decreases to 1.5:1 at 6 GHz.
This will be adequate for many
applications. If a better input
VSWR is required, the use of a
series inductor, L1 in the applica-
tions example, (or, alternatively a
length of high impedance trans-
mission line) is all that is needed
to improve the match. The table in
Figure 16 shows suggested values
for L1 for various wireless fre-
quency bands.
Frequency
(GHz)
Inductor, L1
(nH)
0.9 10
1.5 6.8
1.9 3.9
2.4 2.7
4.0 0.5
5.8 0
Figure16. ValuesforL1.
These values for L1 take into
account the short length of 50 Ω
transmission line between the
inductor and the input pin of the
device.
For applications requiring mini-
mum noise figure (NFo), some
improvement over a 50 Ω match is
possible by matching the signal
input to the optimum noise match
impedance, Γo, as specified in the
“Typical Noise Parameters” table.
For most applications, as shown
in the example circuit, the output
of the MGA-81563 is already
sufficiently well matched to 50 Ω
and no additional matching is
needed. The nominal device
output VSWR is ≤ 2.2:1 from
300␣ MHz through 6 GHz.
The completed application
amplifier with all components and
SMA connectors is shown in
Figure 17.
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부품번호 | 상세설명 및 기능 | 제조사 |
MGA-81563 | 0.1- 6 GHz 3 V / 14 dBm Amplifier | Agilent(Hewlett-Packard) |
MGA-81563 | Amplifier | AVAGO |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |