Questions tagged [mems]
Microelectromechanical systems (MEMS) are very small electromechanical devices. Common devices made using the technology include accelerometers, gyroscopes and microphones.
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How is the gain of this CS stage (gmRo)^2 in this oscillator?
I was reading this paper which uses MEMS active mode resonant fin transistors for making a mmWave Oscillator. I came upon this schematic for the proposed oscillator in the paper, which says that the ...
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Should I use a metallic enclosure for my low-noise circuit?
I am trying to design an ultra-low-noise pre-amplification stage for a MEMS. The amplification consists of a non-inverting amplifier specifically chosen to have less than 4 nV/sqrt(Hz) as input ...
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Who is the manufacturer of the Y31 5133 mic?
My question is in this PCBA I need the information of the who is the manufacturers of the mic the full details of that mic...
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How to calculate decibel from digital MEMS microphone
I built 3x3 microphone array using ICS-52000 MEMS microphones and Teensy 4.1 MCU to get data from those mics. I also wrote code in MATLAB to get data via serial port from Teensy.
ICS-52000 are 24 bit ...
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Why different noise terms are read at specific sampling interval in Allan Variance plot?
I was trying to identify Quantization Noise, Angle Random Walk, Bias Instability, and Rate Random Walk from Allan Variance plot which as Allan deviation on y axis and Sampling Time Interval ...
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Clock Signal over long distance
I'm building microphone array using 16 ICS-52000 MEMS microphones and I propably have problem with clock singal because of the long distance. Below is output signal of the 8 microphone I have already ...
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Weird behavior with SCK signal on breadboard
I'm working on my microphone array and I have problem with signal. I'm using 16 microphones adn Teensy 4.1 MCU and breadboard to connect everything. I also designed PCB for MEMS microphones ICS-52000.
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MEMS Microphone Convert V to dBV
At first is sampled data from the IMP23ABSU MEMS mic converted to V by multiplying each sample by the conversion factor \$ \frac{1}{32786} \$. Then i want to calculate the FFT and PSD after applying a ...
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Why do metal finders not use any sensors other than search coils?
I was wondering why metal finders do not use any other sensors to recieve the magnetic signal instead of search coils.
I have been looking at MEMS sensors used as digital compasses, for example.
As ...
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MEMS Oscillator Simulation in LTSPICE
The MEMS oscillator topology i simulate is below
fig1: Oscillator schematic
Source: A Tunable-Gain Transimpedance Amplifier for CMOS-MEMS Resonators Characterization
Below is mine, the resonator i am ...
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How to remove Earth's gravity DC component from accelerometer readings?
I am programming LIS2DE12 and IIM-42352 accelerometers in C and want to register movement of an object, for this I need to take values and compare them with pre set threshold values. But the problem ...
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Why is a MEMS device affected by helium but not hydrogen?
It seems that MEMS is very sensitive to helium, but only helium. This Link stated that hydrogen does not affect MEMS, which surprised me. Does anybody know why it's just helium, or what's really going ...
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Can I power 3.3V to MEMS mic which is TYP=1.8V?
I am reading this datasheet.
I have 3.3V for MCU and running out of space in the PCB area. So I want to avoid adding LDO for 1.8V.
In the datasheet, it said ...
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What is causing the digital output of my MEMS pressure sensor to decrement continuously?
I'm a lowly mechanical engineer so bear with me. This problem has been the bane of my existence.
I'm using a temperature-compensated barometric pressure sensor in a fluid-contacting application. ...
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External synchronization of a AD MEMS acceleration sensor (ADXL355)
sadly, the AD help page was not very helpful therefore I'm posting here with the hope that the collective intelligence here can help me with my problem.
I'm struggling with the external ...
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