FM Radio Tuner Development Board I2C for micro controllers (Si4703)

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Description

FM Radio Tuner Development Board I2C for microcontrollers (Si4703)

The new version includes a surface mount headphone jack.  This module is an evaluation board for the Silicon Laboratories Si4703 FM tuner chip and includes an amp.

Beyond being a simple FM radio, the Si4703 is also capable of detecting and processing both Radio Data Service (RDS) and Radio Broadcast Data Service (RBDS) information. The Si4703 even does an excellent job of filtering and carrier detection. It enables data such as the station ID and song name to be displayed to the user.  The board breaks out all major pins and makes it easy to incorporate this great chip into your next radio project.

By plugging headphones into the 3.5mm audio jack, you effectively use the cable in your headphones as an antenna! Therefore, this board does not require an external antenna if using headphones or a 3.5mm audio cable longer than 3 feet.

The breakout provides access to SDIO and SCLK for I2C communication while RST can be used for easy resetting.

The SEN pin enables the user to change the mode of the functionality of the IC. The last two pins broken out are GPIO1 and GPIO2 which can be used as general input/output pins, but also can be used for things like the RDS ready, seeking or tuning functions. Keep in mind, by plugging headphones into the 3.5mm audio jack, you effectively use the cable in your headphones as an antenna! Therefore, this board does not require an external antenna if using headphones or a 3.5mm audio cable longer than 3 feet.

FM Radio Tuner Development Board Si4703  Quick Spec

  • Supply: 2.7 to 5.5 V
  • Integrated LDO regulator
  • Worldwide FM band support: 76–108 MHz
  • Chipset: Silicon Labs Si4702/03-C
  • RDS/RBDS Processor (Si4703)
  • Seek tuning
  • Automatic frequency control (AFC)
  • Automatic gain control (AGC)
  • Volume control
  • Line-level analog output
  • 32.768 kHz reference clock
  • Allows direct connection to a battery
  • Size: 3 x 3 mm

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