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PDF MGA-85563 Data sheet ( Hoja de datos )
| Número de pieza | MGA-85563 | |
| Descripción | Low Noise Amplifier | |
| Fabricantes | AVAGO | |
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MGA-85563
3-volt, Low Noise Amplifier for
0.8 – 6 GHz Applications
Data Sheet
Description
Avago’s MGA-85563 is
an easy-to-use GaAs RFIC
amplifier that offers low noise
figure and high gain from 0.8 to
6 GHz. Packaged in an ultra-
miniature SOT-363 package, it
requires half the board space of a
SOT-143 package.
The MGA-85563 features a
minimum noise figure of 1.6 dB
and associated gain of 18 dB at
1.9 GHz. The output is matched
internally to 50Ω, and the input is
partially matched, requiring only
a single external inductor for
optimal performance. The supply
current can be adjusted using an
external resistor, varying IP3
from +12 dBm to +17 dBm.
The circuit uses state-of-the-art
PHEMT technology with proven
reliability. On-chip bias circuitry
allows operation from a single
+3 V supply, while resistive
feedback ensures stability (K > 1)
over frequency and temperature.
Surface Mount Package
SOT-363 (SC-70)
Pin Connections and
Package Marking
GND 1
GND 2
6
OUTPUT
and Vd
5 GND
Features
• Lead-free Option Available
• 1.6 dB minimum Noise Figure at
1.9 GHz
• Adjustable IP3 from +12 dBm to
+17 dBm via External Resistor
• 18 dB Gain at 1.9 GHz
• Single 3 V Supply
• Unconditionally Stable
Applications
• Amplifier for Cellular, PCS, and
Wireless LAN Applications
INPUT 3
4 Rbias
Note:
Package marking provides orientation
and identification; “x” is date code.
Equivalent Circuit
(Simplified)
Attention:
Observe precautions for
handling electrostatic
sensitive devices.
ESD Machine Model (Class A)
ESD Human Body Model (Class 0)
Refer to Avago Application Note A004R:
Electrostatic Discharge Damage and Control.
3
RF
INPUT
BIAS
BIAS
6
RF OUTPUT
and Vd
4
Rbias
1, 2, 5
GROUND
1 page  
5
MGA-85563 Typical Performance, continued, TC = 25°C, ZO = 50 Ω, Vd = 3 V, and using default of no external
resistor at the Rbias pin
20
+ 85°C
+ 25°C
16 –40°C
12
8
4
0
012 34 5 6
SUPPLY VOLTAGE (V)
Figure 10. Device Current vs. Voltage
and Temperature.
20
16
12 IP3
8
4
P1dB
0
14 16 18 20 22 24 26 28 30 32
CURRENT (mA) @ 2.0 GHz
Figure 11. Output Third Order
Intercept and P1dB vs. Device Current.
6
31 mA
4 23 mA
19 mA
2 15 mA
0
-2
-4
-6
-8
-10
012 34 5 6
FREQUENCY (GHz)
Figure 12. Input Third Order Intercept
vs. Frequency and Device Current.
10 25
8
Input
6
23
21 Gass
4
2 Output
19
Gain, |S21|2
17
0
012 34 5 6
FREQUENCY (GHz)
Figure 13. Input and Output VSWR vs.
Frequency.
15
14 16 18 20 22 24 26 28 30 32
CURRENT (mA) @ 2.0 GHz
Figure 14. Gain, |S21|2, and Gain
Associated with Minimum Noise vs.
Current.
5 Page 
11
A Note on Supply Line Bypassing
Multiple bypass capacitors are
normally used throughout the
power distribution within a
wireless system. Consideration
should be given to potential
resonances formed by the combi-
nation of these capacitors and the
inductance of the DC distribution
lines. The addition of a small
value resistor in the bias supply
line between bypass capacitors
will often de-Q the bias circuit
and eliminate resonance effects.
Statistical Parameters
Several categories of parameters
appear within this data sheet.
Parameters may be described
with values that are either
“minimum or maximum,”
“typical,” or “standard
deviations.”
The values for parameters are
based on comprehensive product
characterization data, in which
automated measurements are
made on of a minimum of 500
parts taken from three non-
consecutive process lots of
semiconductor wafers. The data
derived from product character-
ization tends to be normally
distributed, e.g., fits the standard
bell curve.
Parameters considered to be the
most important to system perfor-
mance are bounded by minimum
or maximum values. For the
MGA-85563, these parameters
are: Gain (Gtest), Noise Figure
(NFtest), and Device Current (Id).
Each of the guaranteed param-
eters is 100% tested as part of the
manufacturing process.
Values for most of the parameters
in the table of Electrical Specifi-
cations that are described by
typical data are the mathematical
mean (µ), of the normal distribu-
tion taken from the characteriza-
tion data. For parameters where
measurements or mathematical
averaging may not be practical,
such as S-parameters or Noise
Parameters and the performance
curves, the data represents a
nominal part taken from the
center of the characterization
distribution. Typical values are
intended to be used as a basis for
electrical design.
To assist designers in optimizing
not only the immediate amplifier
circuit using the MGA-85563, but
to also evaluate and optimize
trade-offs that affect a complete
wireless system, the standard
deviation (σ) is provided for
many of the Electrical Specifica-
tions parameters (at 25°C) in
addition to the mean. The stan-
dard deviation is a measure of the
variability about the mean. It will
be recalled that a normal distribu-
tion is completely described by
the mean and standard deviation.
Standard statistics tables or
calculations provide the probabil-
ity of a parameter falling between
any two values, usually symmetri-
cally located about the mean.
Referring to Figure 24 for ex-
ample, the probability of a
parameter being between ±1σ is
68.3%; between ±2σ is 95.4%; and
between ±3σ is 99.7%.
68%
95%
99%
-3σ -2σ -1σ Mean (µ) +1σ +2σ +3σ
(typical)
Parameter Value
Figure 24. Normal Distribution.
Phase Reference Planes
The positions of the reference
planes used to specify S-param-
eters and Noise Parameters for
the MGA-85563 are shown in
Figure 25. As seen in the illustra-
tion, the reference planes are
located at the point where the
package leads contact the test
circuit.
REFERENCE
PLANES
TEST CIRCUIT
Figure 25. Phase Reference Planes.
11 Page | ||
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