供应RDA5802 系列 FM立体调频收音机芯片

1 General Description
The RDA5802E (RDA5802 Enhanced) is a
single-chip broadcast FM stereo radio tuner with
fully integrated synthesizer, IF selectivity and MPX
decoder. The tuner uses the CMOS process,
support multi-interface and require the least
external component. The package size is 4X4mm
and is completely adjustment-free. All these make
it very suitable for portable devices.
The RDA5802E has a powerful low-IF digital audio
processor, this make it have optimum sound quality
with varying reception conditions.
The RDA5802E can be tuned to the worldwide
frequency band.

1.1 Features
l CMOS single-chip fully-integrated FMtuner
l Low power consumption
Ø Total current consumption lower than 22mA at 3.0V
power supply
l Support worldwide frequency band
Ø 65 -108MHz
l Digital low-IF tuner
Ø Image-reject down-converter
Ø High performance A/D converter
Ø IF selectivity performed internally
l Fully integrated digital frequency synthesizer
Ø Fully integrated on-chipRF and IF VCO
Ø Fully integrated on-chip loop filter
l Autonomous search tuning
l Support 32.768KHz crystal oscillator
l Digital auto gain control (AGC)
l Digital adaptive noise cancellation
Ø Mono/stereo switch
Ø Softmute
Ø High cut
l Programmable de-emphasis (50/75 ms)
l Receive signal strength indicator (RSSI)
l Bass boost
l Volume control
l I2S
digital output interface
l Line-level analog output voltage
l 32.768KHz 12M,24M,13M,26M,19.2M,38.4MHz
Reference clock
l 2-wire and 3-wire serial control bus interface
l Directly support 32Ωresistance loading
l Integrated LDO regulator
Ø 1.8 to 5.5 V operation voltage
l 4X4mm24 pinQFN package
1.2 Applications
l Cellular handsets
l MP3,MP4 players
l Portable radios，PDAs, Notebook

技术特点：
*国内首颗采用CMOS工艺的调频收音机芯片；
*驱动能力强，可直接驱动耳机及放大器；
*功耗低，比国外先进方案还低1mA；
*频率覆盖从76M-108M的各国调频波段；
*高度集成度，所需外围器件数为零；
*强大的LOW-IF数字音频结构；
*强大的数字信号处理技术（DSP）,实现自动频率控制和自动增益控制；
*数字自适应噪声抑制
接受灵敏度高、音质出色、立体声效果优异；
*支持重低音，可调式电台搜寻、柔软静音和混音等功能；
*只需一个32.768K晶振作为参考时钟；
*支持I2C和SPI数字接口，支持I2S音频接口，可以配合所有多媒体处理芯片；
*可调去加重（50／75 us) ；
*模拟和数字音量控制；
*线性模拟输出电压；
*两线和三线控制接口模式；
*封装面积： 4×4mm，24-pin QFN