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Unable to operate AD5752R in 0-10V range

arunkrishnank
on Feb 23, 2012

I am using AD5752R in 0-10V operation. But its getting configured only to 0-5V range. Wat may be the reason?

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    •  Analog Employees 
    on Feb 24, 2012 3:38 PM

    Hi arunkrishnank,

    Although the part has not been configured to the desired output range yet, does it work with the default +5V range? Can you configure the rest of the registers and get the expected output voltages when you write a data to it? Is /LDAC tied permanently low, or is it held high during the write cycle and brought low to update the DAC registers?

    You could be facing a timing issue, so a scop plot of the /SYNC, SCLK, /LDAC, SDIN lines would be useful to assure that the interface timings match with the datasheet.

    Regards,

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  • 0
    •  Analog Employees 
    on Feb 24, 2012 3:38 PM

    Hi arunkrishnank,

    Although the part has not been configured to the desired output range yet, does it work with the default +5V range? Can you configure the rest of the registers and get the expected output voltages when you write a data to it? Is /LDAC tied permanently low, or is it held high during the write cycle and brought low to update the DAC registers?

    You could be facing a timing issue, so a scop plot of the /SYNC, SCLK, /LDAC, SDIN lines would be useful to assure that the interface timings match with the datasheet.

    Regards,

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