The TDA7479 is a single chip RDS demodulator and filter with very high RDS demodulation quality and improved digital signal processing.
The TDA7479 is a single-chip device that recovers inaudible RDS information transmitted by FM radio broadcasting stations. It operates according to EBU specifications and consists of an antialiasing switched capacitors bandpass filter and a demodulating section. The device features purely digital RDS demodulation without external components, providing outputs for signal quality indication (QUAL) and ARI indication.
| Supply voltage | 4.5 to 5.5 V |
|---|---|
| Operating temperature range | -40 to 85 °C |
| Center frequency | 57 kHz |
| 3dB Bandwidth | 2.5 to 3.5 kHz |
| Gain at 57 kHz | 18 to 22 dB |
| Signal to noise ratio | 30 to 40 dB |
The RDS clock output on the RDCL line is synchronized and operates at 1187.5 Hz.
The TDA7479 is available in S016 and TSSOP 16 packages.