TPA3140D2PWPR

Overview

The TPA3140D2PWPR is a Class-D audio power amplifier manufactured by Texas Instruments, housed in a 28-HTSSOP surface-mount package. It delivers 10 W per channel into 6 Ω or 8 Ω loads at 10% THD+N from a 12 V to 13 V supply. The device operates on a single supply voltage ranging from 4.5 V to 14.4 V with a typical quiescent current of 35 mA and peak output current of 3.1 A. It features a fixed gain of 36 dB, total harmonic distortion plus noise of 0.06%, and supports analog inputs. Operating temperatures range from -40°C to +85°C.

Feature Summary

• Integrates advanced EMI suppression using spread spectrum control and 1SPW modulation to reduce system costs by allowing ferrite bead filters instead of inductors.
• Includes SpeakerGuard protection circuitry with adjustable automatic gain limiting, power limiting, and DC detection to prevent speaker damage from clipping or short circuits.
• Provides robust protection against pin-to-pin, pin-to-ground, and pin-to-power shorts, along with thermal shutdown capabilities.

Applications

• Bluetooth speakers
• Wireless speakers
• Mini speakers
• USB speakers
• Consumer audio equipment

Procurement Notes

Verify the complete part number including the suffix to confirm the specific tape-and-reel packaging configuration. Confirm RoHS compliance status and moisture sensitivity level requirements for your assembly process. Ensure the design accounts for the 28-HTSSOP thermal pad requirements for adequate heat dissipation during operation.

Selection Notes

Select this component for stereo applications requiring up to 10 W per channel with high efficiency and low external component count. It is suitable for designs where EMI performance is critical without adding bulky filtering components. Consider the fixed 36 dB gain setting when designing the preceding signal stage to ensure proper input levels.

Part Context

This device belongs to the TPA3140D2 series of D-class audio amplifiers. It shares the 28-HTSSOP package form factor with other members like the TPA3136D2 and TPA3144D2, but differs in gain settings and specific protection thresholds. It is designed as a drop-in replacement for legacy stereo amplifier solutions requiring higher efficiency.

FAQ

Does the TPA3140D2 require external inductors for operation?

No, the device supports inductor-free operation due to its advanced EMI suppression techniques.

What is the fixed voltage gain of this amplifier?

The TPA3140D2 has a fixed gain of 36 dB.