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Precision DACs

Q&A Use AD7399 DAC

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vlad-M7 on Apr 23, 2015

Hello! This DAC has inputs VREF. How to connect them to the supply power (Vdd)? Directly or through an external resistor? How to choose a resistor value depending on the desired voltage VREF?

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msamera
Apr 23, 2015 +1 verified
Hi Vladimir,

You may connect them to VDD or have a resistor divider network to compute for your desired voltage on the VREF. Just make sure that your power supply can provide enough current for the other…

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0 vlad-M7 on Apr 23, 2015 5:57 AM

Through a resistor safer. It turns out that the DAC does not have a built-in resistor compared to the AD5451? I want a full range of the output voltage, it does not need to do divider. A resistor inserted between the face value chain Vdd and VREF?
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0 vlad-M7 on Apr 23, 2015 5:57 AM

Through a resistor safer. It turns out that the DAC does not have a built-in resistor compared to the AD5451? I want a full range of the output voltage, it does not need to do divider. A resistor inserted between the face value chain Vdd and VREF?
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