ALM-1812-TR1G Avago Technologies US Inc., ALM-1812-TR1G Datasheet - Page 6

• Manufacturer Part Number: ALM-1812-TR1G
• Description: GPS Filter/LNA/Filter
• Manufacturer: Avago Technologies US Inc.

Specifications of ALM-1812-TR1G

• Current - Supply: 15mA
• Gain: 19.1dB
• Noise Figure: 1.66dB
• P1db: -8dBm
• Package / Case: 12-MCOB
• Rf Type: GPS
• Test Frequency: 1.575GHz
• Voltage - Supply: 3.6V
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Frequency: -
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Figure 7. Demoboard and application schematic diagram
Notes
1. The module is fully matched at the input and output RF pins. The RFin pin is directly connected to a shunt inductor that is grounded. The RF output
2. C2 and L2 form a matching network that affects the frequency response and linearity of the LNA, these can be tuned to optimize gain and return
3. L1 and R1 isolates the demoboard from external disturbances during measurement. It is not needed in actual application. Likewise, C1 and C3
4. Bias control is achieved by either varying the Vsd voltage with/ without R2, or fixing the Vsd voltage to Vdd and adjusting R2 for the desired
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filter blocks DC. Best noise performance is obtained using high-Q wirewound inductors. This circuit demonstrates that low noise figures are
obtainable with standard 0402 chip inductors.
loss.
mitigate the effect of external noise pickup on the Vdd and Vsd lines respectively. These components are not required in actual operation.
current.
50-Ohms TL
RFin
Vdd (Pin 10)
Vsd (Pin 12)
Filter
Filter
C2
R1
Vsd
R2
LNA
Vdd
LNA
L2
C3
L1
Filter
Filter
C1
RFout
50-Ohms TL