SparkFun
SparkFun FM Tuner Evaluation Board - Si4703
The SparkFun FM Tuner Evaluation Board features the Silicon Laboratories Si4703 FM tuner chip, capable of receiving FM radio stations as well as detecting an...
The SparkFun FM Tuner Evaluation Board features the Silicon Laboratories Si4703 FM tuner chip, capable of receiving FM radio stations as well as detecting and processing Radio Data Service (RDS) and Radio Broadcast Data Service (RBDS) information — displaying station IDs, song names, and more.
The Si4703 provides excellent filtering and carrier detection, delivering reception quality comparable to a standard FM radio. All major pins are broken out, including I2C (SDIO/SCLK), reset, SEN mode select, and two configurable GPIO pins for RDS-ready, seeking, or tuning functions.
Key Features
- Si4703 FM Tuner – High-quality FM reception with RDS/RBDS data decoding
- I2C Communication – SDIO and SCLK pins broken out for easy interfacing
- 3.5mm Audio Jack – Headphone cable doubles as the antenna (no external antenna needed)
- All Pins Broken Out – Power, I2C, reset, SEN, GPIO1, and GPIO2
- RDS/RBDS Support – Display station ID, song name, and programme information
Specifications
- Chip: Silicon Labs Si4703
- Interface: I2C (SDIO/SCLK)
- Power: 3.3V
- Audio Output: 3.5mm stereo jack
- Antenna: Headphone cable or 3.5mm audio cable (3ft+ recommended)
Ideal For
- FM radio receiver projects
- RDS/RBDS data display applications
- Arduino and microcontroller radio builds
Resources
Jargon buster
Plain-language definitions for the technical terms used above.
- GPIO
- General-purpose input/output pins are microcontroller pins you can set in software to read signals, switch devices on and off, or connect to peripherals. The number of GPIO pins matters because it limits how many buttons, LEDs, sensors, and other parts you can wire directly to the board.
- I2C
- I2C is a two-wire communication bus used by many sensors and small modules. It matters because several I2C devices can share the same two wires, but each device needs a compatible address and your controller must support I2C.
- microcontroller
- A microcontroller is a small computer on a chip that runs your program and controls connected inputs and outputs. For this product, it is the part that reads buttons and sensors, drives the display and speaker, and communicates over Bluetooth.
Find this product in
Audio & Video
Si4703 FM Tuner Eval Board Schematic
Schematic · 88.2 KB · Click any page to view full size
Si4703 Datasheet
Datasheet · 314.7 KB · Click any page to view full size
AN243 Application Note
Document · 276.5 KB · Click any page to view full size
Supplier page — sparkfun.com
Supplier Description · 691.3 KB · Click any page to view full size
Resources & Downloads
Guides, code examples, and more
Related Tutorials
Free guides on learn.littlebird.com.au
