TPA2000D2PWPG4

Overview

The TPA2000D2PWPG4 is a stereo Class-D audio power amplifier in a 24-pin TSSOP or HTSSOP package. It delivers 2 W into 3-Ω speakers with THD+N < 0.4%. The device operates from a 5-V supply, drawing 8 mA without an output filter and 1 µA in shutdown mode. Key electrical parameters include a -77 dB PSRR, 56 µV RMS noise floor, and switching frequency of 200–300 kHz. Gain settings range from 8 to 23.5 dB via GAIN0/GAIN1 pins.

Feature Summary

• Filterless operation enabled by optimized modulation scheme
• Integrated depop circuitry for reduced startup noise
• Four internal gain settings selectable via logic inputs
• Short-circuit protection against battery, ground, and load faults

Applications

• Battery-powered multimedia speakers
• Notebook PC integrated audio systems
• Powered speaker enclosures
• Low-voltage consumer audio devices

Procurement Notes

Verify the PG4 suffix indicates lead-free and RoHS compliance per Texas Instruments standards. Confirm the PW or PWP package variant matches your PCB footprint requirements. Ensure the ordering suffix aligns with tube or tape-and-reel preferences if applicable. Cross-reference the datasheet revision date to confirm current production status and parameter validity before finalizing procurement.

Selection Notes

Select this component for applications requiring high efficiency at low voltages. The filterless design reduces BOM cost and PCB area significantly compared to traditional Class-D amplifiers. Consider input impedance variations when designing the source coupling network. Ensure adequate decoupling capacitors are placed near PVDD and VDD pins to maintain stability and minimize THD.

Part Context

This device belongs to Texas Instruments' third-generation 5-V Class-D amplifier family. It improves upon previous generations by offering lower supply current, reduced noise floor, and smaller packaging. The monolithic CMOS architecture integrates power MOSFETs for bridge-tied load (BTL) configuration, eliminating the need for external output coupling capacitors.

Replacement Considerations

Check for direct pin-compatible upgrades within the TPA2000 series. Verify that alternative devices support the same 5-V supply voltage and differential input requirements. Ensure replacement parts offer comparable thermal performance and protection features for your specific application environment.

FAQ

Can the TPA2000D2 operate without an output LC filter?

Yes, the device uses a modulation scheme optimized to operate without an output filter, saving system cost and PCB area.

How is the amplifier gain configured?

Gain is set internally using the GAIN0 and GAIN1 digital input pins, offering four settings from 8 dB to 23.5 dB.

What protection features are included?

The device includes short-circuit protection (to battery, ground, and load), thermal shutdown, over-current detection, and under-voltage lockout.