E-TDA7479ADTR

Overview

The E-TDA7479ADTR is a single-chip RDS demodulator and filter manufactured by STMicroelectronics. It recovers inaudible RDS information transmitted by FM radio broadcasting stations, operating in accordance with EBU specifications. The device features very high RDS demodulation quality with improved digital signal processing and a high-performance 57 kHz bandpass filter of the 8th order. It utilizes purely digital RDS demodulation without requiring external components for filter adjustment. The component operates within an industrial temperature range of -40°C to +85°C and is housed in a SOIC package.

Feature Summary

• Integrates an 8th-order 57 kHz bandpass filter that requires no external components or manual adjustment
• Performs purely digital RDS demodulation using low noise CMOS technology
• Provides dedicated outputs for ARI (SK indication) and RDS signal quality monitoring

Applications

• FM radio receivers requiring embedded RDS data recovery
• Automotive audio systems compliant with EBU standards
• Consumer electronics integrating RDS signal quality monitoring

Procurement Notes

Verify the specific suffix ADTR against the official datasheet to confirm the tape and reel packaging configuration. Confirm the lead time and availability status directly with authorized distributors, as this part may be subject to limited supply conditions. Ensure the procurement channel provides valid traceability documentation for automotive-grade components.

Selection Notes

Select this component when a compact solution for RDS demodulation is required without external filtering circuitry. It is suitable for designs needing integrated ARI and signal quality outputs. Verify compatibility with the system's crystal oscillator frequency requirements, noting that 4.332 MHz is standard while 8.664 and 17.328 MHz are optional.

Part Context

This part belongs to the TDA7479 series of single-chip RDS demodulators. It is designed to replace older discrete solutions by integrating the demodulator and high-order filter into one package. The device supports both standard and optional crystal frequencies to accommodate various system clock configurations.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consider verifying cross-reference data from official manufacturer channels before implementation.