SI4825-A10-CS footprint, schematic symbol and 3D model by Skyworks

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SI4825-A10-CS Details

A 4-layer PCB with a solid ground plane and a separate power plane is recommended. Keep the RF traces as short as possible and use 50-ohm microstrip lines. Avoid vias and thermal pads under the device.
The device requires a 2.7V to 5.5V power supply. Ensure the voltage regulator is stable and has low noise. Use a 10uF capacitor between VCC and GND, and a 1uF capacitor between VCC and AVCC.
A quarter-wavelength monopole antenna or a dipole antenna with a 50-ohm impedance is recommended. The antenna should be matched to the device's output impedance for optimal performance.
Use a spectrum analyzer to check the transmitted signal's frequency and power. Verify the device's power supply and biasing. Check for PCB layout issues, such as signal integrity and noise coupling.
The device is rated for operation from -40°C to +85°C. However, the optimal operating temperature range is from 0°C to +70°C for best performance and reliability.

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