TDA7330B

SINGLE CHIP RDS DEMODULATOR + FILTER

HIGH PERFORMANCE, 57KHz BANDPASS

FILTER (8th ORDER)

FILTER ADJUSTMENT FREE AND WITHOUT

EXTERNAL COMPONENTS

PURELY DIGITAL RDS DEMODULATION

WITHOUT EXTERNAL COMPONENTS

ARI (SK INDICATION) AND RDS SIGNAL

QUALITY OUTPUT

4.332MHz CRYSTAL OSCILLATOR

(8.664MHz OPTIONAL)

LOW NOISE MIXED BIPOLAR/CMOS TECH-

NOLOGY

DESCRIPTION

The TDA7330B is a RDS demodulator. It recov-

ers the additional inaudible RDS information

which is transmitted by FM radio broadcasting

stations.

The output data signal (RDDA) and clock signal

(RDCL) can be further processed by a suitable

RDS decoder (microprocessor).

The device operates in accordance with the EBU

(European Broadcasting Union) specifications.

The IC includes a 2nd order antialiasing input fil-

ter, a 57KHz switched capacitor band pass filter,

a smoothing filter and cross detector, a bit rate

clock recovery circuit, a 57KHz PLL, BI-PHASE

PSK decoder, differential decoding circuit, ARI in-

dication and RDS signal quality output.

November 1999

®

BLOCK DIAGRAM

DIP20

SO20

ORDERING NUMBERS:

TDA7330B

TDA7330BD

1/9