It's done! All boards are ready for the upcoming tests next week where we power up section by section, making sure everything behaves like it should. The missing parts will be added after the functionality of each section is verified. E&D @[email protected] @HS_Reutlingen

These power inductors from Würth Elektronik Group really make up a beautiful looking 4th order bessel filter. Curious if they sound as good as they look! 🧐 I guess we will find out pretty soon 😁 #MicroElectronics #PowerElectronics #ClassD #Amplifier #ASIC

It's the first day in the #Lab. Our power supply is up and running just as expected! First noise measurements seem to be in line with expectations, final measurements will be made once everything else is up and running. Tomorrow we will look at the performance of our #preamp

Today we tested our preamp and active filtering using a Red Pitaya Red Pitaya as a bode plotter and spectrum analyzer. The results surpassed our expecations - practically identical as simulated. Currently calculating our SINAD and #THD. Seems to a LOT better than anticipated!

Ever wondered how an impedance curve of an PA speaker looks like? We took the time to measure our HK Audio PR:O 12 speaker wirh an nominal impedance of 8 Ohm. You can clearly see the resonance frequencies of the build in filters. At the lowest point, the impedance is 7.4 Ohm.

We also measured our LD Systems Stinger Sub 15 g3, again with an nominal impedance of 8 Ohm. Lowest measured impedance is 6.9 Ohm.

The last day in the lab for this year: #Troubleshooting the overload protection. We accidently swapped two pins of a SOT23-3 BJT. It took us some time to find out, but the fix is very simple: Just solder it in upside down. No one ever will notice 🤫😏

We have been busy between the years and kept on working, so that we can give you a first glimpse of our ASIC layout!

The final checks are successful and our #MicroElectronics design is ready for tape out! Time for some ice-cream ~ 🍦🥳 E&D @[email protected] @HS_Reutlingen

Bonding time! The silicon is now in it's final coffin - we're ready for the first power up. Fingers crossed, that everything works as expected🤞 #microelectronics #asics

3D rendering of the AMSEL ASIC. The individual layers can be faded in and out and you can navigate through the chip. #Microelectronic #ClassD #ASIC #Powerelectronic

3D render of our PWM ASIC, zooming in and out between different layers and sections. #ASIC #render #Microelectronic #Powerelectronic #ClassD

Greetings from the International Conference on Synthesis, Modeling, Analysis and Simulation Methods, and Applications to Circuit Design 2022, Villasimius, Sardinia. After three year of online conferences, we are happy to present our research results in person again. #SMACD2022