SI4707-B20-GM

RF Receivers Overview

The SI4707-B20-GM is a wideband RF receiver designed for weather band and SAME data applications. It operates within the frequency range of 162.4 MHz to 162.55 MHz. The device features an integrated SAME processor, supporting specific area message encoding decoding. It is supplied in a 20-QFN (3x3) surface-mount package with exposed pads. The component supports a supply voltage range of 2.7 V to 5.5 V and draws 19.1 mA during reception. It functions reliably across an operating temperature range of -20°C to 85°C.

RF Receivers Feature Summary

• Integrated Specific Area Message Encoding (SAME) processor for automated alert decoding
• Dedicated wideband tuning for aviation weather band frequencies
• Surface-mount QFN package optimized for compact PCB layouts

RF Receivers Applications

• Aviation weather monitoring stations
• Emergency alert receiving systems
• Marine navigation equipment
• Portable weather radios

RF Receivers Procurement Notes

Verify current availability status as this part may be discontinued or subject to obsolescence notices. Confirm that the 20-QFN footprint matches your design requirements. Ensure compatibility with existing firmware if replacing legacy components. Check for any product change notifications regarding packaging or material composition updates prior to ordering.

RF Receivers Selection Notes

Select this component when dedicated weather band reception with automatic SAME decoding is required. It is suitable for designs needing a single-chip solution for narrowband FM weather signals. Consider the 2.7V to 5.5V supply range for power management flexibility. Evaluate the 19.1mA receive current against battery life constraints in portable applications.

RF Receivers Part Context

This receiver belongs to Skyworks' family of silicon radio ICs. It specifically targets the niche market for aviation and emergency weather information. Unlike general FM receivers, it includes hardware acceleration for SAME protocol parsing. This integration reduces microcontroller load and simplifies system architecture for critical alert applications.

RF Receivers Replacement Considerations

Check Skyworks official documentation for direct pin-compatible substitutes. Verify if newer revisions of the SI4707 series offer updated packages or enhanced performance. Consult distributor databases for cross-reference alternatives if the original part is unavailable.