MGA-53543-TR1 Avago Technologies US Inc., MGA-53543-TR1 Datasheet - Page 12

• Manufacturer Part Number: MGA-53543-TR1
• Description: IC,Microwave/Millimeter Wave Amplifier,SINGLE,SOT-343R,PLASTIC
• Manufacturer: Avago Technologies US Inc.

Specifications of MGA-53543-TR1

• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

1900 MHz LNA Design
The final example presented in this application note is a
PCS band low noise amplifier circuit. As in the 900 MHz
LNA example, the input is matched to Γ
MHz is given as .9 ∠-17° and the output is matched for
maximum linearity i.e. Γ
very similar to the 1900 MHz HLA. In fact, the only major
difference between the PCS HLA presented earlier and
this PCS LNA schematic is a 3.9nH inductor on the input.
The complete schematic is shown below.
RF
Figure 21. Schematic for 1900 MHz LNA design.
Table 6 shows the complete parts list used for the 1900
MHz low noise amplifier.
Table 6. Component parts list for the MGA-53453 LNA amplifier at 1900
MHz.
3.9 nH
47 nH
2.2Ω
2.2 pF
8.2 pF
150 pF
1
in
3.9 nH
TOKO LL1608-FS3N9S
TOKO LL1005-FH47N
RHOM MCR01J2R2
Phycomp 0402CG229C9B200
Phycomp 0402CG829D9B200
Phycomp 0402CG151J9B200
2.2 pF
1
3
53
2
4
+5V
L
. Biasing the DC supply is done
2.2Ω
47 nH
8.2 pF
150 pF
RF
out
opt
which at 1900
Performance of MGA-53543 at 1900 MHz
The typical noise figure for the 1900 MHz LNA is measured
to be 1.6 dB with OIP3 at a nominal 37 dBm. Figure 
shows a measured gain of 14.8 dB and Figure 3 shows
the input and output return loss to be 16.4 dB and 11.3
dB respectively. P1dB is 18 dBm.
Figure 22. Gain, Noise Figure vs. Frequency for 1900 MHz LNA.
Figure 23. Input and Output Return Loss for 1900 MHz LNA.
Figure 22. Gain, Noise Figure vs Frequency
for 1900 MHz LNA.
Figure 23. Input and Output Return Loss for
1900 MHz LNA.
-10
-15
-20
-25
20
15
10
-5
5
0
0
1.6
1.6
1.8
1.8
FREQUENCY (GHz)
FREQUENCY (GHz)
2.0
2.0
2.2
2.2
S22
S11
Gain
NF
2.4
2.4
2.6
2.6