Hi,
I expect to use a AD5141 10k in linear gain mode and store RAW and RWB in EEPROM.
INDEP signal is tied to VLOGIC.
When I program RAW and RWB (command 1), it works fine : I am able to get RAW=10k and RWB=10k when I load RAW=RWB=0xFF.
But when I try to load RAW and RWB in EEPROM, the device does not power-up with the right value : with RAW=RWB=0xFF, INDEP=logic_1, i get RAW=RWB=5K
Does anybody can held me to program correctly EEPROM to get RAW=RWB=10k at power-up?
Thanks
Hi PascalB ,
will be reviewing this query about digipots shortly. Thanks for your patience.
Best Regards,
Den
Hi PascalB ,
will be reviewing this query about digipots shortly. Thanks for your patience.
Best Regards,
Den
Hi PascalB ,
You have to save it on the correct address of EEPROM, it is specified in Table 14 on the datasheet. You can try to readback the EEPROM contents to check if it shows 0xFF or not. After checking, try to power it down then up and see if the contents of the EEPROM are reflected on the RDAC register.
Best Regards,
Yokki
Hi Yokki,
Thank you for the answer.
I found my problem, wich is a faulty part : On this part, the RDAC works fine, but impossible to load EEPROM.
After replacing the faulty part, it works fine.
This is not reassuring for production stage!
Best regards
Pascal