SI4705 Datasheet PDF - Silicon Labs

Introduction

●This document provides general Si47xx design guidelines and AM/FM/SW/LW/WB antenna selections which includes schematic, BOM, layout and design checklist. All users should follow the Si47xx design guidelines presented in Section 2 and then users can proceed to the appropriate antenna selections according to the application and device used presented in Sections 3 through 10. To get an in-depth knowledge about each individual antenna, the antenna theory and interface model is presented in the Appendices

●Si47xx 3x3 mm QFN Schematic and Layout

●This section shows the minimal schematic and layout options required for optimal Si47xx performance. Population options are provided to support a single layout for all 3 x 3 mm QFN devices, mitigate system noise, operate the internal oscillator with an external crystal, and filter VCO energy.