SI4712-B30-GMR

RF Transmitter Overview

The SI4712-B30-GMR is an FM radio transmitter integrated circuit manufactured by Skyworks Solutions Inc. It supports worldwide FM broadcast bands from 76 MHz to 108 MHz and operates on a supply voltage ranging from 2.7 V to 5.5 V. The device utilizes a 20-pin QFN package with dimensions of 3 mm x 3 mm x 0.55 mm. It features I2C, I2S, and GPIO interfaces for control and audio input. The component functions within a temperature range of -20°C to +85°C and includes an integrated LDO regulator.

RF Transmitter Feature Summary

• Integrates complete transmit functions for standards-compliant unlicensed FM broadcast stereo transmission
• Supports worldwide FM band frequencies with programmable pre-emphasis and digital stereo modulation
• Includes receive power scanning capability to identify low signal power FM channels
• Features RDS/RBDS encoder functionality and audio silence detection

RF Transmitter Applications

• Unlicensed FM broadcast stereo transmission systems
• Integrated receive power scanning for channel identification
• Audio broadcasting devices requiring RDS/RBDS encoding
• Portable consumer electronics with PCB loop or stub antenna support

RF Transmitter Procurement Notes

Verify the specific suffix GMR against official Skyworks documentation to confirm tape-and-reel packaging requirements. Confirm that the intended application complies with local regulations regarding RF transmission power levels and frequency allocations. Check current lifecycle status as discontinuation notices may affect long-term availability.

RF Transmitter Selection Notes

Select this component when designing systems requiring integrated FM transmission with RDS capabilities. Ensure the design accommodates the 2.7 V to 5.5 V supply range and the 20-QFN footprint. Verify compatibility with I2C/I2S audio interfaces and confirm that the operating temperature range meets the environmental requirements of the target application.

RF Transmitter Part Context

The SI4712-B30-GMR belongs to the Si4712/13 series of FM radio transmitters. It is designed for compact applications requiring minimal external components. The device integrates a frequency synthesizer with a VCO and supports both analog and digital audio inputs. It is part of Skyworks' portfolio of wireless and RF integrated circuits.

RF Transmitter Replacement Considerations

Public confirmed substitute part numbers are not available in the provided data.