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reference designMA12070 | Demoboard DEMO_BASSAMP_60W_MA12070

Infineon Technologies MA12070 | Demoboard DEMO_BASSAMP_60W_MA12070

Design approach for a MERUS™ MA12070 based musical instrument bass amplifier

Overview

TopologyClass D Audio Amplifier
IC revision1.0

Description

The MA12070 musical instrument bass amplifier is a wall adapter or battery powered, 60W, professionally featured and ultra-efficient fits-in-your-pocket bass instrument amplifier. It is modelled after classic vacuum-tube bass amplifier topology and utilizes the exceptional audio quality and best-in-class efficiency of Infineon's MERUS™ amplifier technology to amplify every nuance of a genuine vacuum-tube preamplifier.

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

  • Battery Operated Speakers, Wireless and Docking Speakers, Soundbars, Multiroom Systems, Home Theater Systems.

More information

Parts approved by Infineon Technologies

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61300811021
SPECWR-PHD Pin Header - Single, 8, Angled
Availability
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Downloads7 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWR-PHD Pin Header - Single
Pins8 
TypeAngled 
MountTHT 
Length20.32 mm
Rated Current3 A
Working Voltage250 V (AC)
Operating Temperature -40 °C up to +105 °C
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