SI4735-C40-GM

RF Receivers Overview

The SI4735-C40-GM is an obsolete RF receiver integrated circuit manufactured by Skyworks Solutions Inc. It supports AM, FM, Shortwave (SW), and Longwave (LW) broadcast bands with frequency ranges of 153kHz to 279kHz, 520kHz to 1.71MHz, 2.3MHz to 26.1MHz, and 64MHz to 108MHz respectively. The device operates on a supply voltage of 2.7V to 5.5V and draws a receive current of 19.9mA. It features a 20-QFN (3x3mm) surface-mount package and includes RSSI functionality. The component is designed for PCB mounting and functions within a temperature range of -20°C to 85°C.

RF Receivers Feature Summary

• Supports multiple broadcast band reception including AM, FM, SW, and LW
• Integrated RSSI capability for signal strength indication
• Compact 20-pin QFN surface-mount package design

RF Receivers Applications

• Broadcast radio receivers
• Portable audio devices
• General-purpose RF reception systems

RF Receivers Procurement Notes

This component has reached end-of-life status and is no longer in active manufacturing. Procurement should focus on verifying the authenticity of remaining stock from authorized distributors or secondary markets. Buyers must confirm that the specific revision matches their design requirements before acquisition, as availability is limited to existing inventory only.

RF Receivers Selection Notes

Designers requiring this specific silicon revision must account for its discontinued status when planning long-term production runs. Alternative solutions should be evaluated if future supply continuity is critical. Verify that the 20-QFN footprint and electrical parameters align with the target application constraints before considering this part for new implementations.

RF Receivers Part Context

The SI4735-C40-GM belongs to the Si4735 series of single-chip AM/FM/SW/LW radio receivers. This specific C40 variant represents a particular hardware revision within the family. It is distinct from other variants such as the SI4735-D60-GM, which serves as a direct replacement option for designs needing updated supply chain availability while maintaining similar functional characteristics.

RF Receivers Replacement Considerations

The SI4735-D60-GM is listed as a direct substitute for the SI4735-C40-GM. Designers should verify pin compatibility and software configuration requirements when migrating to this alternative part number.