MAAL-010705 Datasheet, PDF (8/9 Pages) M/A-COM Technology Solutions, Inc. – Excellent Input Return Loss Integrated Active Bias Circuit

MAAL-010705
Low Noise Amplifier
0.5-1.6 GHz
Evaluation Board
The above thru line can be provided to
de-embed the losses of the evaluation board.
Schematic
Rev. V2
Off-Chip Component Values
Component
C1
C7, C8, C10
C12, C13
C14
L1
L2
R3
R4
Value
3.3 pF
1000 pF
100 pF
100 µF
9 nH
15 nH
150 Ω
240 Ω
Package
0402
0402
0402
Tantalum, Size D
0402
0402
0402
0402
Optional Schematic
V_BIAS and V_D are separate connections on the
evaluation board to give the option of varying Id
without changing R4. They can be connected
together to a single voltage supply during the
measurement and in the final layout
implementation of the PCB. If two different voltage
supplies are used then apply V_D first and then V_BIAS
to turn on the LNA. To turn off the LNA disconnect
V_BIAS first and then V_D. R3 is varied to obtain differ-
ent levels of gain. R4 is varied to change the drain
current Id.
Optional schematic illustrates alternate grounding
choice for C13 through pin 5. Pin 5 is grounded
internally in the package. Electrical performance of
both layout methods is identical.
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