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resources:technical-guides:best_engineering_practices_when_using_adxl_accelerometers [29 Mar 2021 19:16]
Pablo del Corro
resources:technical-guides:best_engineering_practices_when_using_adxl_accelerometers [30 Mar 2021 22:52] (current)
Pablo del Corro
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 The first and most important advise we would like to offer when using our ADXL portfolio is to **carefully read the product datasheet**,​ this can save you precious time.  The first and most important advise we would like to offer when using our ADXL portfolio is to **carefully read the product datasheet**,​ this can save you precious time. 
  
-===== Terminology ​=====+===== Common terminology in ADXL's datasheet specifications ​=====
  
 === Full-Scale Range (FSR) ===  === Full-Scale Range (FSR) === 
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 === Cutoff (−3 dB) Frequency === === Cutoff (−3 dB) Frequency ===
-For applied ac acceleration,​ the cutoff (−3 dB) frequency ​(also referred to as bandwidth) ​is the frequency at which the input stimulus is attenuated in amplitude by 29.3% (1 − √2/2) at the output of the signal chain. The −3 dB corner is set according  +For applied ac acceleration,​ the cutoff (−3 dB) frequency is the frequency at which the input stimulus is attenuated in amplitude by 29.3% (1 − √2/2) at the output of the signal chain. ​
-to the low-pass cascaded integrated comb (CIC) filter and the low-pass infinite impulse response (IIR) filter setting as selected by the user. A high-pass filter can also be turned on by the user but is disabled by default. All other signal chain elements have an appreciably high bandwidth and are not significant contributors to the cutoff frequency. +
- +
-=== Noise Density === +
-Noise density is a measure of the inherent noise and is a combination of all internal noise sources. This density is fixed by the architecture of the device and is independent of bandwidth. See the Filtering: Noise and Latency Considerations section for more information on noise density. +
-Output Noise +
-Output noise is the realized noise in reported measurements. Whereas noise density expresses the inherent noise in the device, output noise is the union of density and bandwidth. Filters with lower bandwidths provide more aggressive filtering and, therefore, greater noise reduction than filters with higher bandwidths.+
  
 ===== Power supply considerations =====  ===== Power supply considerations ===== 
resources/technical-guides/best_engineering_practices_when_using_adxl_accelerometers.txt · Last modified: 30 Mar 2021 22:52 by Pablo del Corro