广播数据系统（RDS）是当今车载广播设备中必不可少的功能。 ST的解码器IC使用方便。 根据不同的产品，提供以下功能：
■欧洲广播数据系统解调（RDS）
■美国广播广播数据系统解调（RBDS）
■自动分组和块同步，错误探测和校正，24块RAM缓冲器
■可编程中断源
■I2C/SPI 总线接口

TDA7333N
Description
The TDA7333N circuit is a RDS/RDBS signal processor, intended for recovering the inaudible RDS/RBDS informations which are transmitted on most FM radio broadcasting stations.

Key Features
3rd order high resolution sigma delta converter for MPX sampling
Digital decimation and filtering stages
Demodulation of european radio data system (RDS)
Demodulation of USA radio broadcast data system (RBDS)
Automatic group and block synchronization with flywheel mechanism
Error detection and correction
RAM buffer with a storage capacity of 24 RDS blocks and related status information
Programmable interrupt source (RDS block A, B, or D, TA, TA EON)
I2C/SPI bus interface
Input frequency range 4-21 MHz
Power down mode
3.3 V power supply, 0.35 μm CMOS technology

TDA7478
Description
The TDA7478 recovers the additional inaudible RDS information which is transmitted by FM radio broadcasting stations and operates in accordance with the EBU (European Broadcasting Union) specifications.
The device is made up of two sections: a cascaded antialiasing + switched capacitors 8thbandpass filter for precise RDS band selection and a demodulating section that performs the extraction od RDS data stream (RDDA) and clock (RDCL), to be further processed by a suitable RDS decoder.
Output for RDS signal quality is also present.

Key Features
Very high RDS demodulation quality with improved digital signal processing
High performance, 57 kHz bandpass filter (8th order)
Filter adjustment free and without external components
Purely digital RDS demodulation without external components
RDS signal quality output
4.332 MHz crystal oscillator (8.664 MHz optionaL)
Low noise cmos technologY
Low radiation

TDA7479
Description
The TDA7479 recovers the additional inaudible RDS information which is transmitted by FM radio broadcasting stations and operates in accordance with the EBU (European Broadcasting Union) specifications.
The device is made up of two sections: a cascaded antialiasing + switched capacitors 8th bandpass filter for precise RDS band selection and a demodulating section that performs the extraction od RDS data stream (RDDA) and clock (RDCL), to be further processed by a suitable RDS decoder.
Outputs for RDS signal quality and ARI indication are also present.

Key Features
Very high RDS demodulation quality with improved digital signal processing
High performance, 57 kHz bandpass filter (8th order)
FIlter adjustment free and without external components
Purely digitaL RDS Demodulation without external components
ARI (SK indication) and RDS signal quality output
4.332 MHz crystal oscillator (8.664 and 17.328 MHz optional)
Low noise CMOS technology
Low radiation