STMicroelectronics

TDA7718N

TDA7718N Description

The TDA7718N from STMicroelectronics is a high-performance 3-channel audio signal processor designed for automotive-grade applications. Packaged in a 28-pin TSSOP tube, this surface-mount IC integrates advanced audio processing capabilities with an I2C interface for digital control. Operating within a 7.5V to 10V supply range, it meets stringent automotive reliability standards while complying with ROHS3 and REACH environmental regulations. Although marked as obsolete, it remains a robust solution for legacy audio systems requiring precise signal conditioning and processing.

TDA7718N Features

• Automotive-Grade Reliability: Qualified for harsh environments, ensuring stable performance under extreme temperatures and vibrations.
• Multi-Channel Processing: Three independent channels enable flexible audio routing for complex sound systems.
• I2C Control Interface: Simplifies integration with microcontrollers for dynamic adjustments to gain, EQ, and filtering.
• Low Noise & High Fidelity: Optimized for minimal distortion, making it ideal for premium audio applications.
• Moisture Sensitivity Level (MSL 3): Requires careful handling but ensures longevity in humid conditions.
• Compact TSSOP Package: Saves board space while maintaining thermal efficiency.

TDA7718N Applications

The TDA7718N excels in automotive infotainment systems, where its multi-channel processing supports surround sound, noise cancellation, and tone adjustment. It is also suited for:

• Aftermarket audio upgrades requiring high-quality signal conditioning.
• Telematics and hands-free modules needing clear voice signal processing.
• Legacy audio systems where reliability and I2C programmability are critical.

Conclusion of TDA7718N

While obsolete, the TDA7718N remains a technically superior choice for automotive audio systems demanding ruggedness, low-noise performance, and flexible control. Its combination of multi-channel processing, I2C interface, and compact design makes it a standout for engineers maintaining or upgrading older high-fidelity audio architectures. For new designs, consider modern alternatives from STMicroelectronics’ portfolio, but for legacy support, the TDA7718N delivers proven performance.