TDA7333NTR

Encoders, Decoders, Converters Overview

The TDA7333NTR is an RDS/RBDS signal processor designed to recover inaudible data transmitted on FM radio stations. It operates with a 3.3 V power supply using 0.35 µm CMOS technology and accepts MPX input signals up to 0.75 Vrms. The device supports oscillator frequencies between 4 MHz and 21 MHz, generating internal system clocks of 8.55 MHz or 8.664 MHz via a fractional PLL. It features a 3rd order sigma-delta converter for digital sampling, automatic group/block synchronization with flywheel control, and error correction capabilities. Communication is managed through I²C (up to 400 kHz) or SPI (up to 1 MHz) interfaces.

Encoders, Decoders, Converters Feature Summary

• Integrated demodulation for European RDS and USA RBDS standards
• Hardware-based error detection and correction with quality bit indication
• Automatic group and block synchronization utilizing a flywheel mechanism
• Programmable interrupt sources for specific RDS blocks and traffic announcements

Encoders, Decoders, Converters Applications

• FM radio broadcasting receivers
• Automotive audio systems
• Portable multimedia devices

Encoders, Decoders, Converters Procurement Notes

Verify the ordering suffix 'TR' confirms tape and reel packaging rather than tube packing. Confirm the operating temperature range matches the -40 °C to +85 °C specification. Ensure the host controller supports either I²C or SPI protocols as defined by the CSN pin logic.

Encoders, Decoders, Converters Selection Notes

Select this component when a dedicated hardware solution for RDS/RBDS decoding is required to reduce microcontroller load. Consider the 3.3 V supply constraint and the need for external reference capacitors on the REF pins. Evaluate the available interrupt lines against the host's GPIO requirements for handling buffer status.

Encoders, Decoders, Converters Part Context

This part belongs to the TDA7333N family of RDS processors. The TDA7333N variant utilizes tube packaging, while the TDA7333NTR specifically denotes the tape and reel version intended for automated surface-mount assembly processes.

Encoders, Decoders, Converters Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.