TFA9810T/N1,118

Overview

The TFA9810T/N1,118 is a two-channel Class D audio amplifier power comparator manufactured by NXP Semiconductors. It integrates two full-bridge BTL power stages, drive logic, protection control, and differential input comparators within an SO32 package. The device operates on an asymmetrical supply voltage ranging from 8 V to 20 V. At 12 V with an 8 Ω load, it delivers 9.5 W RMS output power per channel at 10% THD. Key electrical parameters include a typical efficiency of 89%, a total harmonic distortion plus noise of 0.04%, and a closed-loop voltage gain of 19.7 dB.

Feature Summary

• Stereo full-bridge power comparator for high-efficiency Class D audio applications
• Zero dead-time switching prevents audible interruptions during operation
• Integrated thermal, current, voltage, and overdissipation protection mechanisms
• Supports both self-oscillating and open-loop digital amplifier configurations

Applications

• Flat-panel television sets
• Flat-panel monitors
• Multimedia systems
• Wireless speakers
• High-end CRT television sets

Procurement Notes

Verify component authenticity through authorized channels as the TFA9810T/N1,118 is listed as obsolete in distributor databases. Confirm RoHS compliance status and check for potential obsolescence notices or product change notifications prior to finalizing design-in decisions. Ensure availability of alternative sources if long-term production support is required.

Selection Notes

Select this component for designs requiring a compact stereo Class D solution without external heat sinks. Verify that the application supports asymmetrical supply voltages between 8 V and 20 V. Ensure the system architecture accommodates either self-oscillating or open-loop modes via the SO/OL pin configuration. Check thermal resistance requirements against the specific PCB copper area available.

Part Context

This part belongs to the TFA9810 series of audio amplifiers designed for consumer electronics. It serves as a core building block for creating efficient digital amplifier systems. The device replaces traditional linear amplifiers in applications where size, weight, and energy efficiency are critical constraints.

Replacement Considerations

Publicly confirmed substitute part numbers are not provided in the source material.