TDA7500A

Overview

The TDA7500A is a fully integrated digital signal processor and controller designed for AM/FM radio applications. It operates on a 3.15V to 3.45V supply voltage and supports up to six audio channels. The device features I2C and SPI interfaces for system control and data transfer. It is housed in a 100-TQFP-EP package with dimensions of 14x14 mm, suitable for surface mount installation. The component functions as a complete solution for digital audio interfacing within automotive or consumer electronics environments.

Feature Summary

• Fully integrated digital processor for AM/FM signal processing
• Supports six audio channels for multi-zone or surround sound applications
• Dual interface support via I2C and SPI protocols
• Operates within a narrow 3.15V to 3.45V power supply range

Applications

• Digital audio interfacing in vehicle infotainment systems
• AM/FM radio receiver modules
• Multi-channel audio processing units

Procurement Notes

Verify the specific suffix against official STMicroelectronics documentation to confirm pinout and functional variations. Ensure the 100-TQFP-EP package compatibility with PCB footprints. Confirm that the 3.15V–3.45V supply requirement aligns with the target system design. Check for end-of-life status or recommended new designs if available.

Selection Notes

Select this component when a dedicated digital processor for AM/FM demodulation and audio handling is required. The 100-pin LQFP package offers sufficient I/O for complex audio routing. Verify thermal performance under the -40°C to 125°C junction temperature range. Ensure the host system can provide the precise 3.3V nominal supply voltage specified.

Part Context

This part belongs to the TDA7500 series of digital audio processors from STMicroelectronics. It is distinct from the company's linear audio amplifier lines, such as the TDA7350A or TDA7263, which serve different power amplification roles. The TDA7500A focuses on digital signal processing rather than analog output stage driving.

Replacement Considerations

Consult STMicroelectronics application notes for direct pin-compatible replacements. Generic DSPs may require significant schematic and firmware redesign due to the specialized AM/FM integration of this component.