SI4455-C2A-ZM1R

RF Transceiver ICS Overview

The Silicon Labs SI4455-C2A-ZM1R is a sub-GHz EZRadio transceiver IC designed for low-current applications. It operates within the 283 MHz to 960 MHz frequency range and supports FSK, GFSK, and OOK modulation formats. The device features a maximum data rate of 500 kb/s and delivers an output power of 13 dBm. It functions on a supply voltage between 1.8 V and 3.6 V, with receive current at 10.9 mA and transmit current up to 24 mA. The component utilizes SPI and GPIO interfaces, is housed in a 20-QFN package, and meets AEC-Q100 automotive qualification standards.

RF Transceiver ICS Feature Summary

• Supports FSK, GFSK, and OOK modulation schemes for versatile communication protocols
• Automotive-grade reliability certified under AEC-Q100 standards
• Integrated high-power transmitter delivering 13 dBm output capability
• Low current consumption profile optimized for battery-operated systems

RF Transceiver ICS Applications

• Automotive keyless entry and passive access systems
• Industrial wireless sensor networks
• Smart metering infrastructure
• Home automation control devices

RF Transceiver ICS Procurement Notes

Verify the specific suffix ZM1R against official Silicon Labs documentation to confirm tape-and-reel packaging specifications and quantity per reel. Ensure the procurement channel provides valid traceability records required for automotive-grade components. Cross-reference the manufacturing date code with the latest product change notices to ensure compliance with current assembly and test site certifications.

RF Transceiver ICS Selection Notes

Select this component when automotive qualification is mandatory for sub-GHz ISM band applications. The integrated 13 dBm transmitter reduces external amplifier requirements compared to lower-power alternatives. Verify that the target application frequency falls within the 283-960 MHz operational range. Confirm that the system design accommodates the 20-QFN thermal pad soldering requirements for optimal performance.

RF Transceiver ICS Part Context

This part belongs to the Si4x55 family of EZRadio transceivers from Silicon Labs. It shares architectural similarities with the SI4455-C2A-GMR but differs in packaging configuration. The series includes complementary variants such as the transmit-only SI4055 and receive-only SI4355, allowing flexible system design based on full-duplex or half-duplex requirements.

RF Transceiver ICS Replacement Considerations

The SI4455-C2A-GMR serves as a functional equivalent within the same family, offering identical electrical characteristics and pinout compatibility. Both parts share the C2A revision silicon and support the same modulation and interface protocols. Verify packaging differences during transition to ensure automated assembly equipment compatibility.