What two axis ( ADXL2xx-family) or three axis ( ADXL3xx-family) accelerometer can be used in place of the ADXL001?
Looks like I never received an email notification from your response, so my apologizes for the delayed response.
The specific devices that were mentioned in the common variations section of CN0303 are the ADXL202 and the ADXL311. These are 2 and 3 axis devices respectively, however these devices have been discontinued by ADI at this time.
There are other choices that might also work, ADXL316 is a 3-axis +/-16g device and if more shock impact is required, the ADXL377 is a 3-axis that goes up to +/- 200g. The ADXL278 is a 2-axis device that can do +/-70g range.
The major difference here for these other sensors is going to be the bandwidth, and that is something that will be specific to your application. The ADXL001 has 20kHz, where as most of the multiple axis sensors range from 400Hz to 2kHz.
At the present time, the frequency response and dynamic range in the ADXL001 is not available in any other ADXL product. The ADIS16223 and ADIS16227 capture these sensor attributes, but I might need to know a bit more about your application before I could fully endorse their suitability.
I saw this under the CN0303 Reference design:To produce a more complete vibration sensing solution, a two axis ( ADXL2xx-family) or three axis ( ADXL3xx-family) accelerometer can be used in place of the ADXL001. By measuring acceleration in the second and third spatial dimensions, the user can write custom software allowing a more accurate and complete vibration sensing system.And I am going to order the parts needed for this setup for tests on vibration measurements. It would be great if I could test multiple MEMS accelerometers with the same evaluation board. Does it need an analog output or is I²C or SPI good too?Has there been someone before to write costum software allowing 2/3 axis measurement?
It really depends on the sensor you order. The ADXL001 is an analog output sensor with a very wide bandwidth, as Mark pointed out. Most of the ADXL2xx and ADXL3xx parts are digital output sensors which have a narrower operating bandwidth. Any of those digital sensors will be ok to use for vibration analysis, but you just need to understand the limitation in what the sensors can measure and what your application calls for.
As far as custom software is concern, there won't be any software written for vibration application because that is very customer to each customer. But there are probably example or device drivers to help with talking to the part, and if they exist those would be on the product page for the component.
Thank you for the response. When I order the EVAL-CN0303-SDPZ board, the EVAL-ADXL001-70Z evaluation board is included. I wanna know wich 2/3 axis accelerometers are compatible as descriped under the 'common variations' from the EVAL-CN0303-SDPZ circuit board.
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