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Configuring AD5422 Midscale Voltage output

Hi Team,

I am able to get 0-5V output range with AD5422 DAC, but I want to set the output range in the Midscale range (between 0.5-5V).

I tried to configure CLEAR SELECT and CLEAR bit in the AD5422 Control register but the lowest output value is always 0V instead of 0.5V .

Please suggest to me how to configure the same for 0.5V output?

Best Regards,

Keshava Shreenidhi

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  • Hi Keshava, 

    For some reason, my reply wasn't sent yesterday. I was also going to suggest adjusting your input codes to the dac to match your output ranges requirement. However in this case, your resolution will remain the same regardless of your custom output range. The resolution will be defined by the output range programmed in the DAC. ie. for range 0.25 to 7V, you'll need to select the 0-10V output range of the DAC. The minimum resolution you'll get is based on the 0-10V range, which is ~152uV.