TDA7808-48X

Overview

The TDA7808-48X is a single-chip quad bridge audio amplifier in advanced BCD technology, integrating a full D/A converter and digital inputs for direct I2S or TDM connection. It features powerful MOSFET output stages with high output power capability of 4 x 27 W into 4 Ω at 14.4 V (THD=10%). The device supports 24-bit digital processing, achieving an outstanding 115 dB dynamic range (A-weighted). It operates on a supply voltage of 6V to 18.5V, ensuring compatibility with automotive start-stop systems down to 6V. The component is housed in a Flexiwatt 27 vertical package.

Feature Summary

• SB-I improved high efficiency operation, reducing dissipated output power by up to 50% compared to conventional Class AB solutions under average listening conditions.
• Flexible serial data port supporting I2S standard, TDM 4Ch, TDM 8Ch, and TDM 16ch (8+8ch) configurations with sample rates from 44.1 kHz to 192 kHz.
• Integrated programmable PLL capable of locking at input frequencies of 64*Fs for all input configurations.
• Independent front/rear clipping detection and offset detection capabilities.

Applications

• Automotive audio systems requiring high efficiency and digital integration
• Start-stop compatible vehicle battery profiles
• Class-G system battery modulation applications

Procurement Notes

Verify the specific ordering suffix '-48X' corresponds to the Flexiwatt 27 vertical package configuration as documented in the device summary table. Confirm that the procurement channel provides the original STMicroelectronics datasheet DS12230 Rev 4 for accurate electrical specifications and pinout details before finalizing design integration.

Selection Notes

Select this model when a quad bridge amplifier with integrated digital-to-analog conversion is required for automotive environments. Ensure the application supports the SB-I high-efficiency mode for optimal thermal performance. Verify that the host controller can provide the necessary I2C control signals and I2S/TDM digital audio interfaces within the specified 1.8V/3.3V logic levels.

Part Context

The TDA7808 series includes variants such as TDA7808-ZSX (PowerSO-36 Tube), TDA7808-ZST (PowerSO-36 Tape & Reel), and TDA7808-48X (Flexiwatt 27 Tube). All variants share identical core electrical characteristics and functionality, differing primarily in the physical package type and packing method suitable for different assembly processes.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Designers should consult STMicroelectronics for current alternative recommendations if the TDA7808-48X is discontinued or unavailable.