TPA2000D2PWRG4

Overview

The TPA2000D2PWRG4 is a stereo Class-D audio power amplifier from Texas Instruments. It delivers 2 W into 3-Ω speakers with THD+N less than 0.4%. The device operates on a 5-V supply and features an optimized modulation scheme that eliminates the need for output LC filters. Electrical characteristics include a typical supply current of 8 mA without a filter, a shutdown current of 1 µA, and a noise floor of 56 µV RMS. It provides four internal gain settings ranging from 8 dB to 23.5 dB and includes integrated depop circuitry.

Feature Summary

• Filterless operation enabled by a specialized modulation scheme that reduces switching losses and allows direct connection to speakers.
• Four selectable internal gain configurations accessible via digital input pins to accommodate various source levels.
• Integrated protection mechanisms including thermal shutdown, over-current detection, and under-voltage lockout.
• Low-power architecture designed for battery-operated devices, featuring minimal quiescent current and deep shutdown mode.

Applications

• Battery-powered multimedia speakers
• Notebook personal computers
• Portable audio players

Procurement Notes

Verify the specific package variant (TSSOP vs HTSSOP) against the design requirements. Confirm RoHS compliance status as indicated by the suffix. Ensure the ordering suffix matches the required reel or tube packaging format. Cross-reference the manufacturer part number with official distributor catalogs to validate authenticity and production status before procurement.

Selection Notes

Select this component for applications requiring high efficiency in a compact form factor without external filtering components. Evaluate the available gain settings to match the input signal amplitude. Consider the thermal dissipation capabilities relative to the enclosure size and ambient temperature constraints. Verify that the power supply voltage remains within the specified operating range for optimal performance.

Part Context

This device belongs to the third generation of 5-V Class-D amplifiers from Texas Instruments. It improves upon previous models by offering lower supply current, reduced noise floor, and smaller packaging dimensions. The technology focuses on minimizing system cost and PCB area by removing passive output filters while maintaining high-fidelity audio reproduction.

Replacement Considerations

TPA2000D2PWPR

FAQ

How does the TPA2000D2 eliminate the need for an output filter?

It utilizes a unique modulation scheme where the output pulses are short and the voltage change is limited to VDD rather than 2xVDD. This significantly reduces ripple current and I²R losses in the load, allowing safe operation without an LC filter.

What is the function of the SHUTDOWN pin?

The SHUTDOWN pin controls the operational state of the amplifier. Holding it high enables normal operation, while pulling it low mutes the outputs and reduces the supply current to approximately 1 µA for power conservation.