SI4355-B1A-FMR

RF Receivers Overview

The SI4355-B1A-FMR is a sub-GHz EZRadio RF receiver from Silicon Labs, designed for low-current wireless applications. It supports FSK, GFSK, and OOK modulation schemes with a maximum data rate of 500kbps. The device operates across three frequency bands: 283MHz to 350MHz, 425MHz to 525MHz, and 850MHz to 960MHz. It features a sensitivity of -116dBm and draws 10mA during reception. Powered by a 1.8V to 3.6V supply, it is housed in a 20-QFN (3x3) surface-mount package and functions within a temperature range of -40°C to 85°C.

RF Receivers Feature Summary

• Supports FSK, GFSK, and OOK modulation protocols
• Integrated PCB antenna connector for surface mount installation
• Low current consumption suitable for battery-operated devices

RF Receivers Applications

• Wireless sensor networks
• Remote control systems
• IoT connectivity modules

RF Receivers Procurement Notes

Verify the component status as Not Recommended for New Designs before integration into new products. Confirm the specific suffix 'FMR' indicates tape and reel packaging versus 'FM' tray packaging. Ensure compatibility with existing board layouts due to the 20-QFN footprint. Check for any recent Product Change Notifications regarding assembly sites or material composition updates prior to procurement.

RF Receivers Selection Notes

Select this receiver for applications requiring sub-GHz coverage without external synthesizers. The integrated PLL and filter simplify design complexity compared to discrete solutions. Consider the fixed modulation support when designing baseband interfaces. Evaluate the -116dBm sensitivity against required link budgets for the target operating environment and antenna gain.

RF Receivers Part Context

This part belongs to the Si4355 family of EZRadio receivers, which are characterized by ease of use and low power consumption. The series covers major global sub-GHz ISM bands, allowing for regional flexibility in wireless product development. It serves as a cost-effective alternative to more complex transceivers for receive-only or simple half-duplex communication scenarios.

RF Receivers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. The component status is listed as Not Recommended for New Designs; consult manufacturer resources for potential end-of-life alternatives.