MA12040XUMA1

Audio Amplifiers Overview

The MA12040XUMA1 is a super-efficient audio power amplifier based on proprietary multi-level switching technology. It supports a supply voltage range of +4V to +18V for the power stage and +5V for digital/analog supplies. The device delivers up to 2x40W peak output power at 18V PVDD with a 4Ω load (10% THD+N) or 2x20W continuous power at 8Ω. It features an embedded digital power management algorithm, I2C control, and flexible output configurations including 2x BTL, 4x SE, and PBTL modes.

Audio Amplifiers Feature Summary

• Proprietary multi-level switching technology enabling filterless amplification and low EMI emissions
• Embedded digital power management algorithm that dynamically adjusts switching frequency and modulation
• Fourth-order feedback loop ensuring high power supply rejection ratio and low distortion
• Integrated protection mechanisms against short circuits, over-temperature, under-voltage, and DC faults

Audio Amplifiers Applications

• Battery operated speakers
• Wireless and docking speakers
• Sound bars
• Multiroom systems
• Home theater systems

Audio Amplifiers Procurement Notes

Verify the specific suffix XUMA1 corresponds to the tape and reel packaging configuration as indicated by distributor data. Confirm the component status, as some sources indicate this part may be discontinued or subject to supply limitations. Ensure the design accounts for the 64-pin QFN package thermal requirements using the exposed pad for heatsink-free operation where applicable.

Audio Amplifiers Selection Notes

Select this component for applications requiring high efficiency without external output filters. The choice between Power Mode Profiles allows trade-offs between audio performance and power loss. Verify that the system supply voltage matches the required +5V for DVDD and AVDD while the power stage operates within the 4V to 18V range. Ensure the host MCU supports the I2C interface for configuration.

Audio Amplifiers Part Context

The MA12040 belongs to Infineon's MERUS™ family of multi-level Class D audio amplifiers. This series utilizes unique five-level modulation to reduce power consumption and electromagnetic interference compared to traditional two-level designs. The MA12040 specifically targets analog input applications, offering integrated DSP options and flexible gain settings to simplify system design in consumer audio products.

Audio Amplifiers Replacement Considerations

Public documentation lists the MA12040P as a related variant within the same family. Verify pin compatibility and electrical specifications before substitution. No other direct cross-references are confirmed in the provided source material.

Audio Amplifiers FAQ

Can the MA12040 operate without an output LC filter?

Yes, the multi-level switching technology enables filterless amplification at full rated power in many applications, though small EMI filters may be used for stringent EMC requirements.

How is the amplifier configured for different output topologies?

Configuration is controlled via dedicated MSEL pins and the I2C interface, allowing selection between 2x BTL, 4x SE, and parallel-BTL modes.