ADAS3022 Recommended Circuit Help

I see in the Recommended circuit schematic for the ADAS3022 ADC that the ADR434 is to be used for providing the 4.096 V reference voltage. When I considered the ADR434 datasheet, I see that it is meant to operate at a voltage from 6V-18V. The Recommended circuit for the ADAS3022 designates that a 5V input should be given to the ADR434. Is this correct? If not, how can the circuit be adjusted to consider this? Any assistance would be appreciated.

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  • Dear LLoben,

    Thank you for your reply! I currently have a Teensy 3.2 connected to the +5V rail. After looking over the circuit again, I was able to find a simple mistake I made where pads on two of the coupled inductors were incorrectly labeled in my schematic. After fixing that error, the current that the circuit draws has now dropped to about 75 mA with the ADAS3022 not in operation. I appreciate your help! One last question: Would this recommended circuit allow for operation if I were exclude the ADR434 and AD8031 and use the internal 4.096 V reference voltage instead?

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  • Dear LLoben,

    Thank you for your reply! I currently have a Teensy 3.2 connected to the +5V rail. After looking over the circuit again, I was able to find a simple mistake I made where pads on two of the coupled inductors were incorrectly labeled in my schematic. After fixing that error, the current that the circuit draws has now dropped to about 75 mA with the ADAS3022 not in operation. I appreciate your help! One last question: Would this recommended circuit allow for operation if I were exclude the ADR434 and AD8031 and use the internal 4.096 V reference voltage instead?

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