Read Tolerance

Question

Hi, 
 Can anyone give me an example on how to read tolerance of AD5252 using Arduino ? 
 I tried several strategies and none worked. I2C communication is working fine. 
 Thanks!

ADIApproved · Accepted Answer

Hi, 
 I think the read tolerance address you used is wrong. From p19 of the datasheet, you need to read two registers per RDAC. first is for the sign and 7-bit integer, second is for the 8-bit decimal. For RDAC1, 0x3A and 0x3B For RDAC3, 0x3E and 0x3F 
 your syntax for parsing the first byte with the sign and 7-bit integers looks correct. 
 Best regards, 
 Ian)

ADIApproved · Answer

Hi LBUS , 
 
 Can you provide a scopeshot of your read command? 
 
 Best Regards, 
 Yokki

vsethia · Answer

Hi LBUS 
 You will notice in Table 11 in the datasheet that A4=0 is reserved for other purposes and A4=1 is used for tolerance readback. 
 
 Regards 
 Vikash

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Read Tolerance

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