TDA7808-ZST

Overview

The TDA7808-ZST is a quad bridge audio power amplifier in the PowerSO-36 package, designed for automotive applications. It integrates a full D/A converter and digital input interface (I2S/TDM) with powerful MOSFET output stages. The device supports 24-bit digital processing and achieves a dynamic range of 115 dB. It delivers up to 4 x 27 W into 4 Ω loads at 14.4 V. Operating on a supply voltage range of 6 V to 18.5 V, it features SB-I high-efficiency operation and is compatible with start-stop battery profiles.

Feature Summary

• AEC-Q100 qualified for automotive reliability
• Integrated 24-bit D/A converter with 115 dB dynamic range
• Flexible serial data port supporting I2S, TDM 4Ch, 8Ch, and 16Ch
• SB-I high efficiency operation reducing dissipated power by up to 50%
• Start-stop compatibility with operation down to 6 V supply voltage

Applications

• Automotive audio systems
• Car radio amplifiers
• Digital input audio processing

Procurement Notes

Verify the specific ordering suffix 'ZST' corresponds to the Tape & Reel packaging format as indicated in the product summary. Confirm that the PowerSO-36 package option is selected if address selection via the ADD pin is required for the I2C bus interface. Ensure component authenticity through authorized distribution channels.

Selection Notes

Select this component for applications requiring direct digital audio inputs without external DACs. The PowerSO-36 package allows for selectable I2C addresses, which is beneficial for multi-device configurations. Consider the thermal resistance of 1 °C/W when designing heatsinking solutions to maintain junction temperature within the specified -40 °C to 105 °C operating range.

Part Context

The TDA7808 belongs to STMicroelectronics' portfolio of high-efficiency digital input automotive quad power amplifiers. It utilizes advanced BCD technology to integrate digital conversion and power stages on a single chip. This integration reduces external component count and board space while maintaining high audio performance standards required in modern vehicle infotainment systems.

Replacement Considerations

TDA7808-ZSX: Same electrical specifications but supplied in Tube packaging instead of Tape & Reel.