TPA2000D4DAPR

Overview

The TPA2000D4DAPR is a stereo Class-D audio amplifier integrated circuit manufactured by Texas Instruments. It delivers 2 watts of output power in a bridge-tied-load (BTL) configuration, capable of driving speakers with impedances as low as 4 ohms. The device integrates a separate 90-milliwatt stereo headphone amplifier for direct headphone connection. Operating within a supply voltage range of 4.5 to 26 volts, it features a fixed gain of 36 decibels and maintains a total harmonic distortion plus noise of 0.1 percent. The component operates reliably across an extended temperature range from -40°C to +85°C.

Feature Summary

• Integrates a dedicated stereo headphone amplifier alongside the main speaker driver channels
• Eliminates the need for external output filters due to filterless Class-D architecture
• Supports low-impedance loads down to 4 ohms for flexible speaker connectivity

Applications

• Portable multimedia devices requiring combined speaker and headphone outputs
• Battery-powered audio systems utilizing low-impedance speakers
• Compact consumer electronics with space-constrained PCB layouts

Procurement Notes

Verify the specific suffix DAPR corresponds to the HTSSOP-32 package with exposed pad when sourcing. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure thermal management strategies account for the surface-mount installation style and operating temperature limits defined in the datasheet.

Selection Notes

Select this component when a single IC solution is required for both loudspeaker and headphone drivers. It is suitable for applications prioritizing board space reduction by removing external LC filters. Consider the 4.5V minimum supply voltage constraint for battery-operated designs to ensure adequate headroom.

Part Context

This part belongs to the TPA2000D series of Class-D audio amplifiers from Texas Instruments. It shares architectural similarities with other filterless models in the family but is distinctively configured with an integrated headphone amplifier stage. The HTSSOP-32 package provides a compact footprint suitable for dense electronic assemblies.

Replacement Considerations

Direct substitutes include the TPA2000D2DAPR, which offers similar Class-D performance without the integrated headphone amplifier. Verify pin compatibility and thermal characteristics before swapping components in existing designs.

FAQ

What is the minimum speaker impedance supported by the TPA2000D4DAPR?

The amplifier is designed to drive speakers with impedances as low as 4 ohms.

Does the TPA2000D4DAPR require external output filters?

No, it utilizes a filterless Class-D architecture that does not require external inductors or capacitors at the output.