September 2013

Doc 10679 Rev 4

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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

external components

■

RDS signal quality output

■

4.332 MHz crystal oscillator (8.664 MHz

optionaL)

■

Low noise cmos technologY

■

Low radiation

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 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.

Output for RDS signal quality is also present.

TSSOP16

Table 1.

Device summary

Order code

Package

Packing

E-TDA7478AD

TSSOP16

Tube

E-TDA7478ADTR

Tape and reel

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