DEMO-MGA-24106 Datasheet, PDF (5/19 Pages) Broadcom Corporation. – High-Gain, Low Current Low Noise Amplifier

Vsd
C4^[1]=330 pF
R2=27 kohm
1
L1=10 nH
RF in
2
L2=18 nH
3
Vdd
R1^[1]=10 ohm
Bias control circuit
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5
L4^[1]=22 nH
C3^[1]=0.1 uF
C2=39 pF
L3=2.2 nH
C1=1.0 pF
RF out
GND
4
Notes:
1. R1, L4, C3, and C4 are not required in actual application. These are added on demoboard to mitigate power supply noise in the test
environment.
2. Pin 3 must be left unconnected.
3. L1and L2 form the input matching network. C1, C2 and L3 form a matching network at the output of the LNA.
4. Bias control is achieved by either varying the SD voltage with/ without R2, or fixing the SD voltage to Vdd and adjusting R2 for desired
current. R2 = 27 kOhm will result in 3.3mA.
Figure 2. Demo board and application schematic diagram for 1.575 GHz
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