Infineon Technologies MA2304xN MERUS multilevel switching amplifiers

The MA2304xN MERUS multilevel switching amplifiers, from Infineon Technologies, provide engineers with good power efficiency at both low and high output power for wireless and Bluetooth speakers, soundbars, and battery-powered designs for conference and multichannel room audio systems.

The MA2304DNS is a 2 x 37 W audio amplifier with fully integrated and configurable DSP (digital signal processing) with I2S/TDM (time division multiplexing) audio interface. It features MERUS multilevel switching amplifier technology, enabling good power efficiency at both low and high output power, without the necessity for a heatsink or a traditional LC filter. Multilevel switching also reduces EMI (electromagnetic interference) and enables inductor‑less applications with no compromise in audio performance or efficiency. A high-order internal feedback loop enables low THD (total harmonic distortion) for good audio performance.

The MA2304PNS offers a simpler volume control and limiter for systems where an application/connectivity processor does the audio processing. This makes the product suitable for battery-powered speaker applications where extended battery life and/or reduced battery cell cost are crucial. Featuring an audio limiter and volume control with ultralow idle power consumption, said to be five times lower than the traditional class D audio amplifiers, the product is also useful for in-mains powered multichannel applications where reduced and scalable EMI performance facilitates designs, without the need for a heatsink.