"Coming soon" on the Infineon site. These look interesting for battery-powered applications.
Product brief:
https://www.infineon.com/cms/en/product/promopages/merus-multilevel-class-d-ma2304xn/
Chip:
https://www.infineon.com/cms/en/pro...grated-class-d-audio-amplifier-ics/ma2304dns/
Eval board:
https://www.infineon.com/cms/en/product/evaluation-boards/eval_audio_ma2304dns/
I stumbled across these while trying to work out whether I wanted to have a play with making something based on the MA12070P using an ESP32 for DSP, however the thing that appeals to me with the MA2304DNS (apart from low quiescent current) is the onboard DSP. Seems it might be a nice way to minimise part count while also allowing for fairly modular / flexible speaker configurations.
There's also a MA2304PNS version that drops the DSP, not sure whether there are any other differences between the two.
I haven't done any sums, but if I'm reading the data sheet correctly, the quoted efficiency improvements seem to be "at typical duty cycle for full range music" and probably wouldn't be quite as impressive if playing sub.
The "PCB as heatsink" approach described in the PDF for the eval board is interesting, but I think I'd want to go for a heatsink for my use case (portable boombox). The size/weight of the amp plus heatsink will be a drop in the ocean compared to the cabinet, driver and battery - and based on the thermals it looks like a heatsink would be useful if I end up with a 4ohm load.
Product brief:
https://www.infineon.com/cms/en/product/promopages/merus-multilevel-class-d-ma2304xn/
Chip:
https://www.infineon.com/cms/en/pro...grated-class-d-audio-amplifier-ics/ma2304dns/
Eval board:
https://www.infineon.com/cms/en/product/evaluation-boards/eval_audio_ma2304dns/
I stumbled across these while trying to work out whether I wanted to have a play with making something based on the MA12070P using an ESP32 for DSP, however the thing that appeals to me with the MA2304DNS (apart from low quiescent current) is the onboard DSP. Seems it might be a nice way to minimise part count while also allowing for fairly modular / flexible speaker configurations.
There's also a MA2304PNS version that drops the DSP, not sure whether there are any other differences between the two.
I haven't done any sums, but if I'm reading the data sheet correctly, the quoted efficiency improvements seem to be "at typical duty cycle for full range music" and probably wouldn't be quite as impressive if playing sub.
The "PCB as heatsink" approach described in the PDF for the eval board is interesting, but I think I'd want to go for a heatsink for my use case (portable boombox). The size/weight of the amp plus heatsink will be a drop in the ocean compared to the cabinet, driver and battery - and based on the thermals it looks like a heatsink would be useful if I end up with a 4ohm load.
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This is the 2nd generation multilevel class D amp from the Merus Audio Team in Copenhagen - It has been "coming soon" for a very long time. But is will be worth waiting for... You get very, very low idle power consumption, a full custom DSP with ultra low latency, improved DAC compared to MA12070p, no analog input, Smaller package, Lower PVDD (20V).
For all my ma12070p system I have ESP32 DSP for what needed - it is quit amazing how much processor power you can get from that SOC. Wireless internet connection, audio stream decoding, a super performming Audio grade PLL,, DSP audio processing and lots of high quality SW lib on FreeRTOS build into Espressif IDF.
For all my ma12070p system I have ESP32 DSP for what needed - it is quit amazing how much processor power you can get from that SOC. Wireless internet connection, audio stream decoding, a super performming Audio grade PLL,, DSP audio processing and lots of high quality SW lib on FreeRTOS build into Espressif IDF.