Application Note
Please read the Important Notice and Warnings at the end of this document
V 1.0
www.infineon.com/merus
page 1 of 28
2019-04-28
UM_1902_PL88_1902_171735
User manual for MERUS
TM
MA120xxx reference
boards
P100002130 REF_AUDIO_MA12040
P100002140 REF_AUDIO_MA12040P
P100002170 REF_AUDIO_MA12070
P100002180 REF_AUDIO_MA12070P
About this document
Scope and purpose
This is a reference and demonstration board for
multi-level amplifiers.
This application note describes the functionality and set-up of the reference design (Sections 2 and 3). It also
includes a schematic, PCB layout, BOM and a discussion of circuit design considerations (Section 4).
Measurement results (Section 5) show high performance in audio and efficiency parameters, as well as good
thermal characteristics. Testing included a frequency sweep, output power sweep and electromagnetic
interference tests. Finally, Appendix A provides sample code that demonstrates basic I
2
C communication using
Arduino UNO.
Intended audience
Audio amplifier design engineers, audio system engineers and audio software engineers.