This document introduces the features and characteristics of the TDA7580 chip, including FM/AM IF sampling DSP, software based channel equalization, FM adjacent channel suppression, reception enhancement in multipath conditions, stereo decoder and weak signal processing, 2 channels serial audio interface (SAI), I2C and buffer-SPI control interfaces, RDS filter, demodulator and decoder, inter processor transport interface, antenna and tuner diversity and front-end AGC feedback.
The TDA7580 is an integrated circuit that combines analogue and digital processing for FM/AM radio channels. It features on‑chip analogue‑to‑digital conversion for a 10.7 MHz IF signal, a 24‑bit DSP for channel equalisation, stereo decoding, RDS handling and a flexible serial audio interface.
The document details absolute maximum ratings, thermal data, a complete pin‑out with descriptions, and mechanical dimensions of the TQFP64 package. It also describes the available I²C/SPI, SAI, RDS and high‑speed serial interfaces for control and data transfer.
| VDD nominal voltage | 1.8 V |
|---|---|
| VDD3 nominal voltage | 3.3 V |
| Operating junction temperature range | -40 °C to 125 °C |
| Storage temperature range | -55 °C to 150 °C |
| Thermal resistance (junction‑to‑ambient) | 68 °C·W⁻¹ |
| Package type | TQFP64 |
| IF ADC conversion frequency | 10.7 MHz |
| Internal DSP word length | 24‑bit |
| Internal audio sampling rate (approx.) | ~36 kHz |
The TDA7515 is the recommended companion tuner for the TDA7580.