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New Class-D amplifiers feature true filter-free operation

Texas Instruments (TI) has introduced a 15W stereo, true filter-free, analogue-input, Class-D audio amplifier. The TPA3110D2’s filter-free advanced EMI (electromagnetic interference) suppression technology eliminates the need for costly inductor-based output filters, reducing bill of materials cost. The device’s SpeakerGuard protection circuitry protects speakers from damage, helping to reduce end equipment customer returns and associated support costs. The device also features enhanced performance, making it suitable for consumer audio applications, including HDTVs, media docking stations, digital radios and sound bars. The features of the device include: low THD+N performance of less than 0.1% THD+N over full power range at 1kHz and advanced click-and-pop suppression circuitry enables improved audio performance and fidelity; flow-through pin-out facilitates hassle-free layout and optimises thermal performance with high-voltage pins on one side and input and control pins on the other; and differential inputs enables better common mode noise rejection and high-fidelity audio.