TPA2011D1YFFR

Overview

The TPA2011D1 is a 3.2-W mono Class-D audio power amplifier in a 1.21 mm × 1.16 mm DSBGA package. It delivers up to 3.24 W into a 4-Ω load at 5 V with 10% THD+N, or 2.57 W at 1% THD+N. The device operates on a 2.5-V to 5.5-V supply, draws 1.5 mA quiescent current, and features an integrated 300-kΩ feedback resistor. Key electrical parameters include 86-dB PSRR, 20-μV output noise, and a 4-ms startup time.

Feature Summary

• Filter-free design utilizing advanced PWM modulation to eliminate the need for external LC output filters.
• Fully differential architecture that removes the requirement for input-coupling capacitors and mid-supply bypass capacitors.
• Integrated image reject filter designed to attenuate DAC out-of-band noise and improve RF immunity.
• Auto-recovering short-circuit protection that automatically restores normal operation after fault conditions clear.

Applications

• Wireless and cellular handsets
• Portable navigation devices (PNDs)
• General portable audio devices

Procurement Notes

Verify the specific ordering suffix YFFR against the manufacturer's official documentation to confirm the reel quantity and tape-and-reel specifications. Ensure the component matches the exact DSBGA pinout and thermal characteristics defined in the datasheet before finalizing procurement.

Selection Notes

Select this component for applications requiring high efficiency and minimal external component count. The fully differential inputs are suitable for noisy environments like mobile phones. Verify that the load impedance and supply voltage align with the specified operating conditions for the desired output power levels.

Part Context

This part belongs to Texas Instruments' TPA201xD1 series of mono Class-D amplifiers. It shares architectural similarities with the TPA2010D1 but offers higher output power and improved power supply rejection ratio. The device is designed specifically for space-constrained portable electronics where battery life and board area are critical constraints.

Replacement Considerations

The TPA2010D1 is a related device within the same family offering lower output power. Direct pin-to-pin substitution requires verification of the specific application's power requirements and thermal dissipation limits against the datasheet specifications.

FAQ

Does the TPA2011D1 require an external output filter?

No, the TPA2011D1 is a filter-free amplifier. Its advanced modulation allows it to drive speakers directly without an LC output filter, provided the speaker traces are short.

How does the fully differential design benefit the circuit?

The fully differential design eliminates the need for input-coupling capacitors and mid-supply bypass capacitors, reducing the total external component count and improving noise rejection in noisy environments.