TPA2005D1DRBQ1

The TPA2005D1DRBQ1 from Texas Instruments is a 1.4-W, mono, filter-free Class-D audio power amplifier designed for automotive applications. It accepts analog input and operates with a wide supply voltage range of 2.5 V to 5.5 V.

Key electrical specifications include an output power of 1.18 W, a maximum power stage supply of 5.5 V, and a typical THD + N of 0.2% at 1 kHz. The device features a switching frequency up to 300 kHz and low output noise voltage of 36 µV. It offers high efficiency, reaching 84% at 400 mW with an 8-Ω speaker, and has a low quiescent current of 2.8 mA and shutdown current of 0.5 µA.

This amplifier is available in space-saving packages, including a 3 mm x 3 mm VSON (DRB) and a 3 mm x 5 mm HVSSOP (DGN). It is qualified for automotive applications and AEC-Q100 certified, with operating temperature ranges of -40°C to +85°C for Grade 3 and -40°C to +105°C for Grade 2.

The design incorporates an optimized PWM output stage that eliminates the need for an LC output filter. It also features internally generated switching frequencies, improved PSRR, and a fully differential design to reduce RF rectification and eliminate bypass capacitors. The device requires only three external components.