AD8857 gain problem

Dear Sir/Madam

 

I viewed a doc and videoabout  "based on AD855X programming gain device of pressure transmitter device of calibration system" of and i  feel it is very good,however, i have some issues about how to use it., please technology support engineers help I answers following of problem:

1, whether or not the calibration system could be used for calibrating AC signals, such as the magnification calibration of piezoelectric sensors output signal (AC signals)?


2.  i wonder  calibration system of single-chip microcomputer (ADuC841) acqurie AD855X output voltage signal , and does this signal feed to the hos
3. if it is used for gaining AC signal ,can we select the AC voltage multimeter stalls by changing the PC software

4, Can you provide a calibration system of single-chip and PC software source code,?


5, Is there product calibration system which be offered? Or country where i cant buy it?


Thank you!

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  • Hi Huang,

    I've talked to the product owner of the AD8557 and she said that it would be helpful if you could share more details about your applications and setup.  Please see below response of the product owner regarding your questions.

    1, whether or not the calibration system could be used for calibrating AC signals, such as the magnification calibration of piezoelectric sensors output signal (AC signals)?

    • What is the maximum frequency and range of output voltage of the AC signal?

    2.  i wonder  calibration system of single-chip microcomputer (ADuC841) acqurie AD855X output voltage signal , and does this signal feed to the hos

    • If I understand the question, (connect output of AD8557 to AduC841), I am assuming connecting to the ADC input of AduC841. From the datasheet of AduC841, external Vref can be set to VDD (max). The supply voltage and external reference voltage of AduC841, and supply voltage of AD8557 are set to the same volta.ge

    3. if it is used for gaining AC signal ,can we select the AC voltage multimeter stalls by changing the PC software

    • Please see response to question 1.

    4, Can you provide a calibration system of single-chip and PC software source code,?

    • AD8557 Evaluation and software are available on www.analog.com.

    5, Is there product calibration system which be offered? Or country where i cant buy it?

    • AD8557 Evaluation Hardware is available for purchase on www.analog.com. The software for the evaluation board can be downloaded from the website as well.


    Best regards,

    Emman

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