I. Product Overview: RRD-102BC-QN-AF stereo FM radio module is the application of the latest SI4702 FM chip development and production of a stereo FM radio module. Small size, low power consumption, high receiver sensitivity, frequency selectivity, common I2C bus control, no debugging, fewer external components, minimal noise and other advantages. Is an easy to use possessed highly cost-effective single-chip FM stereo radio module. Suitable for MP3, MP4, FM radio, digital photo frame, audio and other multimedia devices. Second, the functional characteristics: 1, the use of advanced COMS chip technology, stable and reliable performance. 2, high sensitivity, low noise, anti-interference ability, fewer external components. 3, the use of advanced hardware Tuning SEEK way to quickly find a station. 4, I2C serial data bus interface communication. 5, built-in LDO regulator, low power consumption, wide voltage range (2.7-5.0VDC). 6, the software built-in amplifier control circuit 1000mV audio output power (RL = 32Ω). 7, built-in noise reduction, soft mute, bass boost circuits. 8, with the FM stereo function.