mga-87563 Avago Technologies, mga-87563 Datasheet - Page 7

• Manufacturer Part Number: mga-87563
• Description: 0.5?4 Ghz 3 V Low Current Gaas Mmic Lna
• Manufacturer: Avago Technologies

It is recommended that the PCB traces for the ground
pins NOT be connected together underneath the body
of the package. PCB pads hidden under the package
cannot be adequately inspected for SMT solder quality.
FR-4 or G-10 PCB material is a good choice for most low
cost wireless applications. Typical board thickness is
0.025 or 0.031 inches. The width of 50 Ω microstriplines
in these PCB thicknesses is also convenient for
mounting chip components such as the series inductor
at the input for impedance matching or for DC blocking
capacitors. For noise figure sensitive applications, the
use of PTFE/glass dielectric materials may be warranted
to minimize transmission line losses at the amplifier
input.
Higher Bias Voltages
While the MGA-87563 is designed for use in +3 volt
battery powered applications, the internal bias
regulation circuitry allows it to be easily operated with
any power supply voltage from +2.7 to 5 volts. Figure
15 shows an increase of approximately 1 dB in the
associated gain with +5 volts applied. The P
power (Figure 17) is also higher by about 1 dBm. The
effect of higher V
indicated in Figure 16.
Figure 15. Associated Gain vs. Frequency at V
17
16
15
14
13
12
11
10
9
0.5
1.0
dd
on noise figure is negligible as
FREQUENCY (GHz)
1.5
2.0
2.5
3.0
3.5
4.0
dd
= 5V.
1dB
output
Figure 16. Optimum Noise Figure vs. Frequency at V
Figure 17. Output Power at 1 dB Gain Compression vs.
Frequency at V
-0.50
-1.00
-1.50
-2.00
0.00
3.5
3.0
2.5
2.0
1.5
1.0
0.5
dd
0.5
0.6
= 5V.
1.0
1.2
FREQUENCY (GHz)
1.5
FREQUENCY (GHz)
1.8
7
2.0
2.4
2.5
3.0
3.0
3.6
3.5
4.0
4.2
dd
= 5V.