TPA2000D1PW

Overview

The TPA2000D1PW is a 2-W mono bridge-tied-load Class-D audio power amplifier manufactured by Texas Instruments. It operates within a supply voltage range of 2.7 V to 5.5 V and supports an ambient temperature range from -40 °C to 85 °C. The device delivers 2 W into a 4-Ω speaker with less than 1% total harmonic distortion plus noise, achieving under 0.2% THD+N at 1.5 W output. Key electrical parameters include a typical supply current of 4 mA without an output filter, a shutdown current of 0.05 µA, and a power supply rejection ratio of -77 dB.

Feature Summary

• Filterless operation enabled by modulation scheme optimized for direct speaker connection
• Integrated depop circuitry to minimize turn-on pop during startup and shutdown cycling
• Four internal gain settings selectable via digital inputs ranging from 6 dB to 23.5 dB
• Short-circuit protection against short-to-battery, ground, and load conditions

Applications

• Notebook personal computers
• Powered speakers integrated within the same enclosure as the amplifier
• Battery-powered portable audio devices requiring extended run time
• Systems requiring high efficiency to minimize power dissipation

Procurement Notes

Verify the specific package variant when ordering, as the PW package is available in both tube (TPA2000D1PW) and tape-and-reel (TPA2000D1PWR) configurations. Confirm that the selected part matches the required operating temperature range and RoHS compliance status. Ensure input networks are designed considering the variable input impedance associated with different gain settings to maintain proper frequency response.

Selection Notes

Select this component for applications prioritizing high efficiency and minimal external component count due to its filterless design. Consider the fixed gain options provided by the GAIN0 and GAIN1 pins; if variable gain is required externally, ensure the input network accounts for the shifting input impedance. Verify that the speaker impedance is at least 4 Ω to achieve the specified power output and thermal performance ratings.

Part Context

This device belongs to the TPA2000D1 family of third-generation Class-D amplifiers from Texas Instruments. It utilizes a proprietary modulation technique that reduces switching losses and allows for direct coupling to speakers. The family includes variants such as the MicroStar Junior BGA package option (GQC), offering flexibility in board space constraints while maintaining identical functional characteristics and electrical specifications.

Replacement Considerations

Direct pin-compatible replacements within the same datasheet include the TPA2000D1GQCR in the MicroStar Junior BGA package. For system upgrades, consider newer members of the TPA3000 or TPA3100 series which offer higher power outputs and additional features, though these will require schematic redesigns and do not share pinouts.