SI4705-B20-GM

Product Overview

SI4705-B20-GM from Skyworks Solutions Inc. is a enhanced broadcast FM radio receiver. This RF receiver description summarizes the receiver function, operating band, modulation or broadcast standard, interface considerations and sourcing relevance for engineering teams.

The content is written for BOM review and procurement use, focusing on practical receiver parameters rather than internal stock notes.

Key Features

• Manufacturer: Skyworks Solutions Inc.
• Part Number: SI4705-B20-GM
• Device Type: enhanced broadcast FM radio receiver
• Receiver Architecture: 100% CMOS enhanced FM radio receiver
• Frequency Range: Worldwide FM band support
• RDS / RBDS: RDS/RBDS decoder available on Si4705 family variants
• Audio Output: Analog audio output, with digital audio output on Si4705 variants
• Receiver Functions: AFC, AGC, seek tuning, adjustable soft mute and stereo blend
• Package: 3 mm x 3 mm 20-pin QFN package class
• Package / Case: 20-pin QFN / QFN-style package family, GM/GMR reel ordering code
• Design Notes: Match antenna strategy and host API settings to the selected Si4704/Si4705 firmware revision.

Applications

Portable radios, Bluetooth audio devices, mini/micro systems, docking stations and consumer electronics with FM reception.

Compact products that need flexible FM tuning, RDS data and low external component count.

Quality & Sourcing

Antrex Electronics can support sourcing for SI4705-B20-GM through available stock checks, BOM consolidation and alternative-lot review. For RF receiver components, packaging condition, date code, MSL handling and original labeling should be verified before shipment.

For project builds, repair support or shortage coverage, Antrex Electronics can coordinate visual inspection, package verification and third-party testing when required. This helps buyers manage risk when sourcing discontinued, legacy or hard-to-find RF receiver parts.