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ADPD105 reading data register value is not stable

Category: Hardware
Product Number: ADPD105

I designed the turbidity measurement system with reference to the circuit of CN0409. The controller uses STM32F103. The program is transplanted based on ADUcM360 officially provided by ADI, and the initialization setting is also referred to this program. But when using the standard solution for calibration, the data read from the data register can only remain stable for a short period of time. What could be the problem?  



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[edited by: lallison at 2:13 PM (GMT -4) on 23 May 2022]