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TDA7478 Datasheet

SINGLE CHIP RDS DEMODULATOR

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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.
*$3*36
TSSOP16
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.
Table 1. Device summary
Order code
E-TDA7478AD
E-TDA7478ADTR
Package
TSSOP16
Packing
Tube
Tape and reel
September 2013
Doc 10679 Rev 4
1/11
www.st.com
11


STMicroelectronics Electronic Components Datasheet

TDA7478 Datasheet

SINGLE CHIP RDS DEMODULATOR

No Preview Available !

Contents
Contents
TDA7478
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


Part Number TDA7478
Description SINGLE CHIP RDS DEMODULATOR
Maker ST Microelectronics
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TDA7478 Datasheet PDF






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