TDA8922BJ/N2,112

Overview

The TDA8922BJ/N2,112 is a high-efficiency Class-D audio power amplifier manufactured by NXP USA Inc. It features two independent channels capable of stereo Single-Ended (SE) or mono Bridge-Tied Load (BTL) configurations. The device operates within a supply voltage range of ±12.5 V to ±30 V and utilizes the DBS23P through-hole package. Typical output power reaches 2 × 50 W in SE mode at ±26 V with a 6 Ω load, or 88 W in BTL mode at ±21 V with an 8 Ω load. It includes advanced protection mechanisms such as over-temperature, over-current, and window protection.

Feature Summary

• Zero dead time switching for improved efficiency
• Smooth start-up functionality preventing pop-noise due to DC offset
• Internal switching frequency adjustable via external clock input
• Full short-circuit proof capability across load and supply lines

Applications

• Television sets
• Home-sound systems
• Multimedia systems
• Mains-fed audio equipment
• Car audio boosters

Procurement Notes

Verify the specific ordering suffix /N2,112 against the manufacturer's current datasheet to confirm packaging and marking details. Ensure the DBS23P through-hole package variant matches the design requirements. Confirm RoHS compliance status and material declarations for the specific batch. Check for any obsolescence notices or lifecycle changes directly from NXP Semiconductors before finalizing procurement plans.

Selection Notes

Select this component for applications requiring high output power with low dissipation. The differential inputs provide flexibility for phase inversion in BTL configurations. Consider the fixed gain settings of 30 dB for SE and 36 dB for BTL modes when designing the signal chain. Evaluate thermal management needs based on the junction-to-ambient resistance characteristics provided in the datasheet.

Part Context

This part belongs to the TDA8922B series of Class-D power amplifiers. It is available in both HSOP24 surface-mount and DBS23P through-hole packages. The series is designed for mains-fed audio applications, offering high efficiency and robust protection features. The TDA8922BJ specifically denotes the DBS23P plastic DIL-bent-SIL power package version.

Replacement Considerations

Public confirmed substitute part numbers are not identified in the provided documentation.