TDA7808-ZSX

Overview

The TDA7808-ZSX is a single-chip quad bridge amplifier in advanced BCD technology, integrating a full D/A converter, digital input for direct connection to I2S or TDM, and powerful MOSFET output stages. It achieves an outstanding 115 dB S/N ratio with more than 110 dB of dynamic range. The device supports flexible serial data ports including I2S standard, TDM 4Ch, TDM 8Ch, and TDM 16ch (8+8ch). It operates with a supply voltage range of 6V to 18.5V and is qualified under AEC-Q100 standards for automotive applications.

Feature Summary

• High efficiency SB-I operation providing the highest non-class D efficiency
• Output power capability of 4 x 27 W into 4Ω at 14.4 V, 1 kHz, THD = 10%
• Integrated programmable PLL locking at 64*Fs input frequencies
• Pop-free transitions between mute and play states

Applications

• Automotive audio systems
• Start-stop compatible battery profiles
• Class-G system battery modulation

Procurement Notes

Verify package type upon ordering as suffixes determine packing; ZSX indicates tube packaging while ZST indicates tape and reel. Confirm address selection requirements since four addresses are selectable only for specific package options. Ensure thermal management meets junction temperature limits given the high power dissipation capabilities.

Selection Notes

Select this component for designs requiring digital inputs directly from I2S or TDM sources without external DACs. Consider the Flexiwatt 27 vertical package for through-hole mounting needs. Verify that the host microcontroller supports the required I2C bus speeds and I2S/TDM frame formats for proper configuration and data transmission.

Part Context

This part belongs to the TDA7808 series of high-efficiency digital input automotive quad power amplifiers. It is designed to replace conventional Class AB solutions by reducing dissipated output power by up to 50% under average listening conditions. The device integrates diagnostic features like offset and clipping detectors for enhanced system reliability.

Replacement Considerations

TDA7808-48X serves as a functional alternative within the same family but utilizes a Flexiwatt27 package. Cross-reference pinouts carefully as interface configurations may vary slightly between package types regarding address selection pins.