SI4055-C2A-GM

RF Transmitter Overview

The SI4055-C2A-GM is an RF transmitter from Silicon Labs' EZRadio series, designed for sub-GHz applications. It operates within a frequency range of 284MHz to 960MHz and supports FSK and OOK modulation schemes. The device delivers a maximum output power of 13dBm and achieves a sensitivity of -116dBm. It features a maximum data rate of 500kbps and includes 64KB of storage capacity. Powered by a supply voltage between 1.8V and 3.6V, it utilizes an SPI interface for control. The component is housed in a 20-VFQFN package with exposed pads, suitable for surface mount installation across a temperature range of -40°C to 85°C.

RF Transmitter Feature Summary

• Supports GFSK and OOK modulation protocols for versatile wireless communication
• Delivers high output power of 13dBm with excellent receiver sensitivity
• Features ultra-low standby current consumption of 40nA for extended battery life
• Integrates 64KB memory capacity for flexible protocol implementation

RF Transmitter Applications

• Wireless sensor networks
• Remote keyless entry systems
• Industrial telemetry
• Smart metering devices

RF Transmitter Procurement Notes

Verify the specific revision suffix C2A against the latest Silicon Labs errata sheets to ensure compatibility with design requirements. Confirm that the 20-VFQFN footprint matches the PCB layout specifications. Check RoHS compliance status and moisture sensitivity level ratings prior to assembly. Ensure the SPI interface signals align with the host microcontroller capabilities. Review the datasheet for any updates regarding operating conditions or recommended circuit configurations.

RF Transmitter Selection Notes

Choose this component when sub-GHz transmission with moderate output power is required. It is suitable for applications prioritizing low standby current over high data throughput. Consider the 284-960MHz range for regional regulatory compliance. Evaluate the 500kbps limit against application bandwidth needs. The integrated memory reduces external component count compared to simpler transmitters.

RF Transmitter Part Context

This part belongs to the Si4x55-C family of EZRadio transceivers. It shares architectural similarities with other models in the series but is optimized for specific frequency bands and modulation types. The C2A revision indicates a specific manufacturing lot or feature set update. It complements Silicon Labs' portfolio of low-power wireless solutions for IoT and industrial markets.

RF Transmitter Replacement Considerations

Consult official substitution lists for compatible parts within the Si4x55 family. Verify pin-to-pin compatibility if replacing with similar models. Check for differences in supported modulation schemes and output power levels. Ensure firmware compatibility if migrating between different revisions of the same base part number.

RF Transmitter FAQ

What modulation formats does the SI4055-C2A-GM support?

It supports Gaussian Frequency Shift Keying (GFSK) and On-Off Keying (OOK).

What is the maximum data rate for this transmitter?

The maximum data rate is 500kbps.

How much internal memory is available on the chip?

The device includes 64KB of storage capacity.