TDA7478_11 Datasheet, PDF (1/11 Pages) STMicroelectronics – Single chip RDS demodulator

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.
'!0'03
TSSOP16
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.
Output for RDS signal quality is also present.
Table 1. Device summary
Order code
E-TDA7478AD
E-TDA7478ADTR
Package
TSSOP16
Packing
Tube
Tape and reel
June 2011
Doc 10679 Rev 3
1/11
www.st.com
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