1. can i use ADXL355 for measuring a frequncy range of DC to 20Hz?
2. what is the calibration procedure for ADXL355 for faithful results?
for your 2nd question, you may refer to this link: Measuring AC Accelerations: To Calibrate or Not to Calibrate? | Analog Devices
Thank you for the answer.
In the link they had given a brief details about dc and ac calibration of ADXL355 and 354.
From the link what i also understood is that the ADXL355 can be used for measuring DC responses. So, i think ADXL355 can be used for measuring frequency range of DC to 20Hz. please let me know whether i am correct or not?
The person who normally supports this product is on business travel this week, but I will try to help. I am not sure I understand why you title this post and start out with doubt. You are correct, in that MEMS Accelerometers will respond to DC. Tilt sensors would be impossible otherwise. Since 20Hz is much lower than the resonant frequency of the ADXL355, I would expect that the response to be very flat, so you can use some of the tilt sensor techniques to optimize the scale factor. The manner in which you manage bias errors will depend on how much change in orientation that you want to track. If you expect the changes to be relatively small (+/-30 degrees), you might be able to get away with a bias observation and correction, from one orientation. These references might also be helpful....
I hope that this helps!
Thank you for the answer NevadaMark.
Hi NevadaMark and John.Tuazon,
Actually i am having one more query, its regarding evaluation boards available for ADXL355. There are two boards available in the market
1.EVAL-ADXL355-PMDZ Evaluation Board | Analog Devices
2. EVAL-ADXL355Z Analog Devices Inc. | Development Boards, Kits, Programmers | DigiKey
Among the two boards the first one is cheaper but said to be using advanced SPI and didn't mentioned about other interface protocols (datasheet of ADXL355 says it supports I2C and SPI). can you please tell me which one should i buy if i want to interface ADXL355 with raspberry using I2C.
The first link that you have sent is actually patterned for the PMOD Pin out of the ADICUP360 and ADICUP3029 which run in SPI. Although ADXL355 supports I2C and SPI, the ADXL355-PMDZ board is used for SPI communication with the ADICUP360/3029. The ADXL355Z (2nd link) can cater to your need of interfacing ADXL355 with Raspberry-Pi using I2C. This board also provides a printed schematic on which you can locate the I2C pins on the headers easily.
Thank you John.Tuazon
Retrieving data ...