AD5667R Internal reference output voltage

Hi YNii439 ,

Could you please provide the exact model number to assist us in our investigation? Additionally, have you tested another unit to see if it exhibits the same behavior?

Best Regards,

Den

Hi Den,

Thank you for your reply.

The exact model number is AD5667RBRMZ. We have also confirmed this with 3 devices.

Best Regards.

Could anyone give me an answer?

Hi YNii439 ,

The AD5667RBRMZ (10-lead MSOP) is designed to output a 2.5V internal reference with VDD between 4.5V and 5.5V. When VDD is below 5V, such as 3.3V, the internal reference voltage is clamped, resulting in VREFOUT values of 2.43V to 2.45V instead of 2.5V. This clamping behavior is normal and expected as per the datasheet. For optimal performance and to achieve the correct 2.5V VREFOUT, VDD should be maintained at 5V​.

Br,

Den

Hi Den,

Thank you for your reply.

It was very helpful.

Thanks.

Best regards,

Hi Den,

One more question.

On Page 3 of the ADR5567R datasheet, Table 2 contains the following description:
The reference output (MSOP package) is described as ranging from 2.495V to 2.505V under conditions of VDD = 2.7V to 5.5V.

I believe there should need additional notes accompanying this description, but none are provided. Could this be a typo?

Could you please help me?

Best Regards,

I will send you an additional image for reference.

Could anyone give me an answer below question??

>One more question.

>On Page 3 of the ADR5567R datasheet, Table 2 contains the following description:
>The reference output (MSOP package) is described as ranging from 2.495V to 2.505V under conditions of VDD = 2.7V to 5.5V.

>I believe there should need additional notes accompanying this description, but none are provided. Could this be a typo?