MEMS microphones Forum Discussions
I 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 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.
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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?
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Hello!
I'm validating solution to convert IM73A135 diff. output to single ended signal which is supported only by ADC I used.
I do not have another ADC option with diff. input, unfortunately. Another restriction - my application required 1.8V.
Not so much options for OpAmp selection working with this single ended voltage level. I found only one OpAmp suitable for this solution and asking your help to review this schematics.
- Is any other OpAmps should work in this circuits?
- My application is wearable and package SC70-5 so huge and I need two OpAmps, second one used for DC offset 0.9V.
Is any suitable OpAmps with smaller package size available?
Thank you for your help!
Show LessIs the EVAL AHNB ANALOGV01 mic development board compatible with Ubuntu 22.04 and 20.04 and can i use flex mems mics from a different vendor to use the board. I had recently a problem with the TDK MEMS mic board it was not recognized by the OS.
Show LessHello,
I am looking for a single-ended analog output microphone with IPxy (e.g., IP57).
For now I have only found the IM70A135V01 with differential output.
This thread:
says there should be the IM68A130, but I cannot find anything about ingress protection in the datasheet, so there probably isn't any.
So, should I use the IM70A135V01 in single-ended mode?
If yes, it would probably be better to connect the unused output to GND with a resistor value about the same as the load on the used output?
Thanks in advance!
Show LessWhat is the minimum detectable sound pressure of the IM73D122V01 digital MEMS microphone, and whether it is feasible to detect uPA level sound signals.
smartconx_target@Q!w2e3r4t5y6u7i8o9p0||/t5/MEMS%E9%BA%A6%E5%85%8B%E9%A3%8E/IM73D122V01%E6%9C%80%E5%B0%8F%E5%8F%AF%E6%A3%80%E6%B5%8B%E7%9A%84%E5%A3%B0%E5%8E%8B%E5%A4%A7%E5%B0%8F/td-p/659047
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