GENERAL DESCRIPTION

The RDS/RBDS demodulator is a CMOS device with integrated filtering and demodulating of RDS/RBDS signals coming from a multiplexed input data stream. Data signal RDDA and clock signal RDCL are provided as outputs for further processing by a suitable microcomputer, for example CCR921 and CCR922.

The SAA6581T replaces SAA6579 in function and pin-compatibility.

FEATURES

• Integrated switched capacitor filter

• Demodulates European Radio Data System (RDS) or the USA Radio Broadcast Data System (RBDS) signals

• Oscillator frequencies: 4.332 or 8.664 MHz

• Integrated ARI clamping

• CMOS device

• Single supply voltage: 5 V

• Extended temperature range: −40 to +85 °C

• Low number of external components.

APPLICATIONS

The RDS/RBDS system offers a large range of applications from the many functions that can be implemented. For car radios the most important are:

• Program Service (PS) name

• Traffic Program (TP) identification

• Traffic Announcement (TA) signal

• Alternative Frequency (AF) list

• Program Identification (PI)

• Enhanced Other Networks (EON) information.