Dear support team,
I got some questions regarding BUF16821-Q1 from our customer.
So please advise me about it.
When the customer was trying to write I2C data into BUF16821-Q1, he could not write very well, and abnormally large current flows into Vs (pin 9).
The current was usually around 50 mA, but it seemed be more than 1 A when the above phenomenon was occurring.
Since protection circuit of the power supply operated momentarily, the voltage of the DAC output at that time couldn’t be confirmed.
There was no abnormality in the current of DVDD.
The customer says that it seems that the same phenomenon as above is occurring with other member.
A question
1) Are there any condition that abnormal current flows into Vs as described above?
2) Is there any condition in I2C data that the above phenomenon occurs?
Are there any data of registers that should not be set?
3) Can we write of read I2C data without supplying voltage to Vs (only to DVDD)?
Best regards,
M. Tachibana
