E-TDA7478AD STMicroelectronics

TDA7478 Single chip RDS demodulator 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 * 3*36 external components TSSOP16 RDS signal quality output 4.332 MHz crystal oscillator (8.664 MHz optionaL) Low noise cmos technologY The device is made up of two sections: a Low radiation th cascaded antialiasing + switched capacitors 8 bandpass filter for precise RDS band selection Description and a demodulating section that performs the extraction od RDS data stream (RDDA) and clock The TDA7478 recovers the additional inaudible (RDCL), to be further processed by a suitable RDS information which is transmitted by FM radio RDS decoder. broadcasting stations and operates in accordance with the EBU (European Broadcasting Union) Output for RDS signal quality is also present. specifications. Table 1. Device summary Order code Package Packing E-TDA7478AD Tube TSSOP16 E-TDA7478ADTR Tape and reel September 2013 Doc 10679 Rev 4 1/11 www.st.com 11Contents TDA7478 Contents 1 Block diagram and pins description 3 1.1 Block diagram . 3 1.2 Pins description . 4 2 Electrical specifications 5 2.1 Thermal data . 5 2.2 Absolute maximum ratings . 5 2.3 Electrical characteristics . 5 3 Output timing . 7 4 Oscillator controls (FSEL, OSEL) 8 5 Package information . 9 6 Revision history . 10 2/11 Doc 10679 Rev 4