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ISO124: About ISO124U over temperature drift

Part Number: ISO124

Hi expert,

My customer is using ISO124U and the project is moving to the mass production stage, but customer found the drift during the negitive temperature range is more sensitive / worse than in during the positive temeprature range.

could you please help comments on this? is it really the drift performance is more sensitive during the negitive temperature range?

customer's system accuarcy target: 0.5%:

1, 25C: can meet 0.5%

2, 75C, can meet the 0.5%

3, but -25C, cannot meet the 0.5%

Best regards

Iven Xu