Rev. 0.1 5/08

Copyright © 2016 by Silicon Laboratories

Si4731-DEMO

Si4731-DEMO

1.

Features



Tuning spacing



Seek SNR/RSSI thresholds



Soft mute SNR/RSSI thresholds



Channel filters



Stereo and mono blend thresholds



Band limits



De-emphasis (50 or 75 µs)



AM channel spacing detection threshold

2. Overview

The Silicon Laboratories Si4731-DEMO board provides a complete portable AM/FM radio design with numerous

enhanced features that demonstrate the capabilities of the Silicon Laboratories AM/FM and MCU product families.

The Si4731-DEMO comes in a 3x3 mm 20-pin QFN package and is layout compatible with the entire Silicon Labs

Si47xx radio family of FM receivers, transmitters, and transceivers.

The host MCU is a Silicon Laboratories

C8051F930 with internal oscillator and built-in DC-DC converter. A 79 x 101 dot matrix LCD provides the flexibility

to display a variety of system information including RDS. The demo board can work with either one AA battery

using the dc-dc converter of the C8051F930 MCU or three AAA batteries.