Strangely enough, when I went to their site, it links to their Ebay site. And that is the message i received from the Ebay site. Maybe i would write into the directly and see what happens.
Oon
That was 2 years ago before Merus was acquired by Infineon.
This is MA12070P, with the I2S interface. Later I did another revision of PCB with Schottky diodes added to protect the IC from overstressing (you can see results on the photo attached).
The sound was good thou, I still have a couple of PCBs and IC's to play with. However, I did not compare it with my TAS5548+TAS5162 amp.
Attachments
Beware of the above link to hifiexpress. The moment I clicked on it, Avast quarantined a trojan malware...
Infineon also released some GaN Evaluation Board modules paired with Merus chips :
EVAL_AUDAMP24 - Infineon Technologies
EVAL_AUDAMP24 - Infineon Technologies
Hallo SMSL!!
Please do a very simple power amp configurable as per 1.0, 2.0, 2.1 etc.. + user selectable power modes (PMP0, PMP1 etc) with external power. The world needs a real simple, very high quality, low noise, 30W amp for active systems etc. No BT, non nothing except a simple small power amplifier.
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Hi All - SMSL did some very good design choosis when they build the SA300 - use the analog input version of MA12070 to get the best output noise level.
TNT what you are asking for is not hard - any simple micro controller will enable the other PMP of the MA12070P or non P devices. 1.0/2.0/2.1 and 4 can be done with 2 jumpers.
Yes that would be a very interesting design to be given to the Audio DIYs /Jakobsen Denmark
TNT what you are asking for is not hard - any simple micro controller will enable the other PMP of the MA12070P or non P devices. 1.0/2.0/2.1 and 4 can be done with 2 jumpers.
Yes that would be a very interesting design to be given to the Audio DIYs /Jakobsen Denmark
Hi,
This showed up on my radar. Looks interesting...
Balanced Class D 1.0 / 2.0 / 2.1 / 4.0 Amplifier Module MA12070 160W 4 Ohm - Audiophonics
Oon
This showed up on my radar. Looks interesting...
Balanced Class D 1.0 / 2.0 / 2.1 / 4.0 Amplifier Module MA12070 160W 4 Ohm - Audiophonics
Oon
Thinking out loud, I just wondered what it would be if you connected part of the volume control (assuming it has 3 gang to a voltage regulator) that will supply a TPA3116, so at low volume it would be at 6V and at high volume at 24V... it would help to increase the PWM % at low volume. Although not quite as sophisticated as a 3 level PWM, but will be a compromise.
Oon
Oon
Sorry, I just realised error in my previous post. What I meant was to connect the volume control to a variable voltage regulator.
Also available here, for us Europeans!
Balanced Class D 1.0 / 2.0 / 2.1 / 4.0 Amplifier Module MA12070 160W 4 Ohm - Audiophonics
Out of stock )
The link has been shared weeks ago.
Question for members :
Is it possible to power 2 modules (dual mono) with only one Dual rail SMPS PSU 2x24V like this ? :
SMPS300R Module d'Alimentation a Decoupage 300W / +/-24V - Audiophonics
The link has been shared weeks ago.
Question for members :
Is it possible to power 2 modules (dual mono) with only one Dual rail SMPS PSU 2x24V like this ? :
SMPS300R Module d'Alimentation a Decoupage 300W / +/-24V - Audiophonics
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Yes. But maybe you cant call it "dual mono" anymore as it becomes the most used topology of all times - 2 amplifiers sharing one power.
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A simple alternative in Europe: Lusya Infineon MA12070 Audio Amplifier Board 2*80W stereo class D Amplificador T0350|Amplifier| - AliExpress
Same as from Audiophonics.
Apparently no real output filter chokes.
Same as from Audiophonics.
Apparently no real output filter chokes.
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Don t buy it from Aliexpress... Seller is not fair at all !
Not is stock anymore... but they keep on selling it....
Not is stock anymore... but they keep on selling it....
Here is my version of PCB based on Infineon Demo board. It's for MA12070p, amplifier with I2S input. I changed ferrite filters to LC ones because of manufacturer recommendations and placed two switches in order to change I2C address and change mono/stereo mode. Its dimensions is: 68x45mm (2.7x1.8inch). Any feedback aappreciated. This is my first experience with PCB. Thanks!
MA1070p mplifier -
EasyEDA
MA1070p mplifier -
EasyEDA
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Looks very nice and with a real output filter. What is the value and current rating (before saturation) of the SMD output filter chokes?