View tda7330b datasheet:

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 DIP20 SO20 ORDERING NUMBERS: DESCRIPTION TDA7330B TDA7330BD 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 ter, a 57KHz switched capacitor band pass filter, (RDCL) can be further processed by a suitable a smoothing filter and cross detector, a bit rate RDS decoder (micr