TDA7564

Overview

The TDA7564 is a quad bridge car radio amplifier utilizing Multipower BCD technology and a DMOS output stage. It operates within an 8V to 18V supply range, delivering up to 28W per channel into 4Ω loads at 14.4V with 10% THD, or 72W maximum into 2Ω. The device features selectable voltage gains of 12dB or 26dB, a quiescent current of approximately 300mA, and a thermal resistance from junction to case of 1°C/W. It supports I²C bus communication for configuration and diagnostics.

Feature Summary

• Integrated full diagnostic array communicating speaker status via the I²C bus
• Non-switching high-efficiency internal structure reducing thermal dissipation
• Independent front and rear soft play and mute control capabilities
• Comprehensive fault protection including DC offset detection and clipping monitoring

Applications

• Car radio applications
• Automotive audio systems

Procurement Notes

Verify component authenticity through authorized STMicroelectronics distributors. Confirm package integrity upon receipt. Ensure proper ESD handling protocols during storage and installation. Validate electrical characteristics against datasheet specifications before integration into final designs.

Selection Notes

Select this component for automotive audio designs requiring integrated diagnostics and high efficiency. Consider the Flexiwatt25 package for thermal management requirements. Verify I²C interface compatibility with the host microcontroller. Evaluate gain settings based on input signal levels and desired output power.

Part Context

This part belongs to STMicroelectronics' family of multifunction quad power amplifiers designed specifically for automotive environments. It utilizes Multipower BCD technology to combine bipolar, CMOS, and DMOS processes on a single chip, optimizing performance for high-power audio applications in vehicles.

Replacement Considerations

TDA7564B