TFA9810T/N1,112

Overview

The TFA9810T/N1,112 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. Key electrical parameters include a typical output efficiency of 89% at 2x9 W into 8 Ω, a quiescent current of 5 mA, and a total harmonic distortion plus noise of 0.04%. It supports both self-oscillating and open-loop configurations.

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, overcurrent, overvoltage, undervoltage, and overdissipation protections
• No external heat sink required due to efficient thermal management

Applications

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

Procurement Notes

Verify the specific ordering suffix /N1,112 against the manufacturer's official documentation to confirm package type and environmental compliance status. Confirm availability as this component may be subject to discontinuation or lifecycle changes. Ensure the application design accounts for the SO32 package thermal characteristics and pin configuration requirements specified in the datasheet.

Selection Notes

Select this component for designs requiring a compact stereo Class D amplifier solution without external heatsinks. It is suitable for single-supply asymmetrical voltage applications between 8 V and 20 V. Consider the integrated protection features and zero dead-time switching for reliable audio performance. Verify compatibility with either self-oscillating or open-loop system architectures based on the specific PWM generation method used in the design.

Part Context

The TFA9810 belongs to the TFA9810 series of audio amplifiers designed for high-efficiency digital audio systems. It serves as a core building block for creating compact closed-loop self-oscillating or open-loop amplifier systems. The device replaces traditional linear amplifiers in consumer electronics where size, weight, and energy efficiency are critical constraints.

Replacement Considerations

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