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  • ADXL345 EMC Tests for the ADXL345 at higher frequencies available?

    GenevaCooper
    GenevaCooper

    Q 

    Are there any higher frequency EMC tests available for the ADXL345?

     

    A 

    EMC testing has been performed for the 10 Hz – 1000 Hz but not at the 127.7 MHz
    frequency. These products are used in cellphones (by the millions), so EMC
    there is not…

    • 1 month ago
    • MEMS Inertial Sensors
    • Documents
  • ADXL345: FAQ

    GenevaCooper
    GenevaCooper

    FAQ

    • 1 month ago
    • MEMS Inertial Sensors
    • Documents
  • ADXL345: Datasheet Error

    GenevaCooper
    GenevaCooper

    Q 

    In the data sheet of the ADXL345/ADXL346 on page 15/14 Figure 36 „Preventing
    Bus Traffic Errors“ we assume that the NOR gate is wrong and it should be an OR
    gate.

     

    A 

    I confirm that in Figure 36 on page 15/14 of the ADXL345/ADXL346 datasheet…

    • 1 month ago
    • MEMS Inertial Sensors
    • Documents
  • ADXL345 - resonance frequency

    GenevaCooper
    GenevaCooper

    Q 

    I checked the datasheet of the ADXl345 – I am missing the resonance frequency

     

    A 

    It is 5500Hz like for the ADXL335!
    • 1 month ago
    • MEMS Inertial Sensors
    • Documents
  • ADXL345 power consumption

    GenevaCooper
    GenevaCooper

    Q 

    We use a ADXL345 in a product were we used to have a power consumption around
    42µA. In the latest shipment of this product we use the same components and
    firmware but the power consumption is around 49µA. We have investigated the

    …
    • 1 month ago
    • MEMS Inertial Sensors
    • Documents
  • ADXL345 internal filter

    GenevaCooper
    GenevaCooper

    Q 

    Could you give us some more detail of the ADXL345 insite

     

    A 

    The internal filter is as follows:
    1. There is a single pole analog anti-aliasing filter at ~1.6kHz.
    2. The digital filter is an IIR type, first order.
    3. The mechanical system acts as a…

    • 1 month ago
    • MEMS Inertial Sensors
    • Documents
  • ADXL345 range configuration

    GenevaCooper
    GenevaCooper

    Q 

    I have some questions about the 0x31 DATA_FORMAT register of our ADXL345.
    If I set DATA_FORMAT = 0x00, make the Gee Range = +/-2g, then I can get 1g =
    256 and this is reasonable (2^10/4g=256)

    If I set DATA_FORMAT = 0x02, make the Gee Range = +…

    • 1 month ago
    • MEMS Inertial Sensors
    • Documents
  • ADXL345 Magnetic Interferance?

    GenevaCooper
    GenevaCooper

    Q 

    I still wonder about whether the sensors fulfill the demands of the MRI
    environment? It has to withstand a static magnetic field of 3 Tesla (i.e. it
    should not contain any ferromagnetic materials),

     

    A 

    The sensor is produced using standard semiconductor…

    • 1 month ago
    • MEMS Inertial Sensors
    • Documents
  • ADXL345 ESD protection requirement

    GenevaCooper
    GenevaCooper

    Q 

    How to add ESD protection diode to the ADXL345

     

    A 

    The ESD protection are needed for pin 1 (VDD I/O) and pin 6 (VS) on ADXL345. 
    Just any ESD diode would work and serve the purpose of protection.  The current
    ADXL345 sample you have on hand, plus the…

    • 1 month ago
    • MEMS Inertial Sensors
    • Documents
  • ADXL345 vary in performance

    GenevaCooper
    GenevaCooper

    Q 

    Our application is to detect when cars start moving (in order to wake up the
    system (i.e. GPS and GSM modules). When setting up the ADXL345 as shown below,
    it works as expected for 98% of the devices. That is, the device is
    moved/touched once…

    • 1 month ago
    • MEMS Inertial Sensors
    • Documents
>
 
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