September 2013 Rev 8 1/12
12
TDA7479
Single chip RDS demodulator + filter
Features
■ Very high RDS demodulation quality with
improved digital signal processing
■ High performance, 57 kHz bandpass filter
(8
th
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
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 8
th
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.
Table 1. Device summary
Order code Package Packing
E-TDA7479D
(1)
1. Device in ECOPACK® package (see Section 5: Package information on page 9).
SO16 Tube
E-TDA7479AD
(1)
TSSOP16 Tube
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