MEMS microphones Forum Discussions
Hello! The output signal of the MEMS microphone IM73A135 is a bit on the small side and needs to be amplified. Since this microphone has a very high SNR, it needs a high performance amplifier to match it. Is there a recommended differential amplifier? It would be best if the amplitude limiting feature is available, as the sound dynamic range is large in the scene where we are capturing the sound signal, sometimes the signal overflows and causes clipping.
smartconx_target@Q!w2e3r4t5y6u7i8o9p0||/t5/MEMS%E9%BA%A6%E5%85%8B%E9%A3%8E/MEMS%E9%BA%A6%E5%85%8B%E9%A3%8EIM73A135%E7%9A%84%E4%BF%A1%E5%8F%B7%E6%94%BE%E5%A4%A7/td-p/709989
Show LessHello! I am trying to build an audio acquisition pcb using KiCAD and the IM73D122 microphone but the infineon product page doesnt have the design data specifically for KiCAD. Does anyone know where I can find it?
Show LessHi,
I would like to ask if anyone has tried connecting multiple kits of EVAL AHNB DIGITALV01 into a PC. The goal here is to connect 6 microphone kits so that I can have a single output fed into the pc and into Audacity. Is there any hardware/inteface you can recommend. thank you!
Show LessI would like to inquire about the IM68A130 mass production date.
Hello,
I am currently developing a nine axis sensor attitude fusion algorithm. The chip manufacturer provides a sensor data fusion algorithm library, but does not support Infineon's development platform because Infineon's chip architecture is quite unique. Does Infineon officially provide a MEMS sensor data fusion algorithm?
Show LessDear all:
We want to know if Infineon has reference design MEMS in smart lighting.
Replace Bosch SMI230, any recommendations?
Best Sides
Sam Zhang
smartconx_target@Q!w2e3r4t5y6u7i8o9p0||/t5/MEMS%E9%BA%A6%E5%85%8B%E9%A3%8E/MEMS-in-Smart-lighting/td-p/677138
Show LessHello,
I recently asked about how the mic IM70A135 could be used single-ended, the reply was basically no. When asking for samples the reply was: try with a IM70A135 evaluation board, including a link.
Good idea, but there is no evaluation board available anywhere.
So this was NOT helpful at all.
So, do these evaluation boards exist at all, at least somewhere? If yes, how to get them?
These pin-less SMD mics cannot really be tested by wiring, because surely the PCB mounting (acoustic port hole) affects the characteristics too much. And making a PCB for a product which is probably never used is too costly.
Show Less
Hello
We have developed a multi-channel microphone based on IM69D120 and stm32H7. Analyzing the signal from the microphone, we saw a transient process lasting 4 seconds - a displacement of the constant component. If a modulated signal from a generator is applied to the input of the delta-sigma controller, then such a transient process is not observed. The amount of emission is different for all microphones. both the amplitude and the settling time change.
The settings for the reading channels are the same. What is the reason for this behavior? Which ones can be fixed?
Show Less