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REF2030: Reliability of noise simulation

Part Number: REF2030
Other Parts Discussed in Thread: TINA-TI

Hi, ti

In the datasheet, the noise density of REF2030 was 0.25 ppm / sqrt(Hz).

When I tried noise analysis with tina-ti, the noise density was not matched to the datasheet.

I worked on the schematic below.

The output noise density was  359 nV / sqrt(Hz).

Does the tina-ti model of REF2030 not properly express internal noise?
Yunsik.