TDA7801PDTR

Overview

The TDA7801PDTR is a quad bridge audio power amplifier from STMicroelectronics, designed for automotive applications. It utilizes BCD technology to integrate high-performance D/A conversion with powerful MOSFET outputs, achieving an S/N ratio of 115 dB and dynamic range exceeding 105 dB. The device supports I2C, I2S, and TDM interfaces, allowing flexible configuration via the I2C bus. It operates within a supply voltage range of 8V to 18V and functions reliably at temperatures between -40°C and 105°C. Packaged in a PowerSO-36 with an exposed top pad, it offers comprehensive diagnostics and protection features.

Feature Summary

• Integrated 110 dB D/A converter with I2S digital input (3.3/1.8 V) and TDM option
• High output power capability: 4x28 W/4 Ω @ 14.4 V, 1 kHz, 10% THD; Max 4x72 W/2 Ω
• Full I2C bus control for independent front/rear soft play/mute and selectable gain levels
• Advanced diagnostics including DC/AC load detection, offset detector, and clipping detector

Applications

• Car audio systems
• Automotive amplifiers
• High-end car radio equipment

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific ordering suffix matches the required packaging format. Check for end-of-life status or alternative part recommendations if current stock is limited. Ensure compliance with RoHS3 specifications and REACH regulations for your region.

Selection Notes

Select this component for designs requiring digital input integration and high-fidelity audio performance in automotive environments. Consider the PowerSO-36 package for thermal management and space constraints. Verify interface compatibility with the host processor's I2S/TDM signals. Evaluate the need for I2C diagnostic capabilities versus simpler analog control schemes.

Part Context

The TDA7801PDTR belongs to the TDA7801 family of digital input quad power amplifiers. The 'PD' indicates the PowerSO-36 package variant, while 'TR' specifies Tape & Reel packaging. This series is characterized by its BCD technology integration, combining digital signal processing capabilities with high-power output stages for modern vehicle infotainment systems.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult STMicroelectronics for current alternatives if the TDA7801PDTR is obsolete or unavailable.