Product overview
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.
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All 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
Circuit Diagram
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The STMicroelectronics team - TDA7478
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