SI4012-C1001GT

RF Transmitter Overview

The SI4012-C1001GT is a fully integrated, crystal-less CMOS RF transmitter from Silicon Labs' EZRadio series. It operates in the sub-GHz ISM band with continuous frequency coverage from 27 MHz to 960 MHz. The device supports FSK and OOK modulation formats with data rates up to 100 kBaud. It features an adjustable output power of up to +10 dBm and includes automatic antenna tuning capabilities. Powered by a supply voltage ranging from 1.8 V to 3.6 V, it consumes 10 mA during operation and up to 19.8 mA during transmission. The component is housed in a 10-TFSOP or 10-MSOP package.

RF Transmitter Feature Summary

• Fully integrated crystal-less design eliminates external oscillator requirements
• Automatic antenna tuning simplifies hardware layout and calibration
• Supports FSK and OOK modulation for flexible communication protocols
• Adjustable output power up to +10 dBm for range optimization

RF Transmitter Applications

• Home automation systems
• Remote sensing applications
• Keyless entry (RKE) systems

RF Transmitter Procurement Notes

Verify the specific suffix against official Silicon Labs documentation to confirm pinout and electrical characteristics match the target design. Ensure the selected package variant aligns with PCB footprint constraints. Cross-reference RoHS compliance status with current regulatory requirements for the destination market before finalizing procurement orders.

RF Transmitter Selection Notes

Select this component for designs requiring simplified bill-of-materials due to the absence of an external crystal. The wide frequency range allows global deployment across various ISM bands without hardware changes. Consider the 10 mA operating current for battery-powered applications where low standby consumption is critical for extended operational life.

RF Transmitter Part Context

This part belongs to the Si4012 family of sub-GHz transmitters. It is designed as a cost-effective solution for wireless control applications. The device integrates the radio front-end and digital baseband into a single chip, reducing system complexity compared to discrete RF solutions.

RF Transmitter Replacement Considerations

Publicly confirmed substitute part numbers include SI4012-B1-GT and SI4012-C1-GT. Verify compatibility with existing firmware and antenna matching networks when transitioning between these variants.