MERUS™ MA2304DNS/MA2304PNS Multilevel Class D Audio Amplifiers

Infineon's MA2304DNS and MA2304PNS are a family of 2 × 37 W audio amplifiers that feature the MERUS multilevel switching amplifier technology, enabling unmatched efficiency at both low and high output power. Multilevel switching relaxes EMC requirements and enables inductorless applications with lower costs. A high-order internal feedback loop ensures low THD and high PSRR for excellent audio performance.

The integrated DSP in the MA2304DNS is highly configurable and can be used to correct imperfections in real speaker applications, such as equalization, limiting, and others. The MA2304PNS offers simpler volume control and limiter for systems where an application/connectivity processor does the audio processing.

The ultra-low idle power consumption makes the MA2304DNS/MA2304PNS ideal in battery-powered speaker applications with extended battery ‎life, reduced battery cell cost, or both. Ninety percent of idle current consumption improvements can be seen compared to previous ‎generation devices. The reduced and scalable EMI performance in mains-powered multi-channel applications enables industrial ‎designs without needing a heatsink‎.

The EVAL_AUDIO_MA2304DNS and EVAL_AUDIO_MA2304PNS are evaluation boards featuring the inductorless MERUS MA2304DNS and MA2304PNS respectively. Each board contains digital input/output (I/O) and a variety of output and setup/selection features as well as one onboard buck power supply generator (1.8 V/3.3 V selectable) so only one external power supply (PVDD) is necessary. Audio amplifier design engineers can use these boards for evaluating or demonstrating key features/advantages of the MERUS technology.