A 4-layer PCB with a solid ground plane and a separate power plane is recommended. The device should be placed near the antenna, and the RF traces should be kept short and 50-ohm matched.
The device requires a 2.7V to 5.5V power supply, and the VCC pin should be decoupled with a 10nF capacitor. The EN pin should be tied to VCC or a digital signal for enable/disable functionality.
The device can handle up to 2W of continuous wave (CW) power, but it's recommended to derate the power handling capability based on the operating frequency and environmental conditions.
Use a pi-network or a T-network topology with discrete components to match the device's input/output impedance to the system's impedance. The datasheet provides a recommended matching circuit.
The device operates from -40°C to +85°C, but the performance may degrade at extreme temperatures. Ensure proper thermal management and consider derating the device's performance at high temperatures.
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SMS7621-001LF Overview
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