Infineon Technologies MA12070 | Demoboard AN_2105_PL88_2105_151947

Description

This document provides EMC output filter recommendations that are tailored to the MERUS™ MA12040,MA12040P, MA12070 and MA12070P audio amplifiers. The recommendations are a guideline to pass EMC tests for various applications. They are not covering every situation as every product or application is different. The potential to choose and combine components is vast, and the final solution will constitute a tradeoff between size, price, filter characteristics and performance.

Features

• Multi-level switching technology with 3-level and 5-level modulation
• 2×80W peak output power (26V PVDD, RL = 4Ω, 10% THD+N level)
• Supply voltages: +4V to +26V (PVDD) and +5V (A/DVDD)
• Suitable for 2.0, 2.1, 4.0, 1.0 output stage configurations
• 4th order feedback error control
• <160mW Idle power dissipation (26V PVDD, all channels switching)

• 80% efficiency at 2W power (1kHz sine, 8Ω)

• 91% efficiency at full Power (1kHz sine, 8Ω)

• Audio performance (PMP2): >110dB SNR (A-w, rel. to 1% THD+N power level)
• 45µV output integrated noise (A-w)
• 0.004% THD+N at high output levels
• I2C control (four selectable addresses)
• Built-in protection: under-voltage-lockout, over-temperature warning/error, short-circuit/overload protection, power stage pin-to-pin short-circuit, error-reporting through serial interface (I2C), DC protection

Typical applications

• Portable audio - battery operated speakers, on-the-go bluetooth speakers, docking speakers, boom boxes, wearable speakers
• Voice controlled audio, Pro audio - active monitor speakers, power-over-ethernet (PoE), multi-channel systems
• Home audio – multi-room systems, television, soundbars, home theater systems, stand-alone components

More information

• Datasheet
• IC product information