Part Number: THS8136
Hi team,
COMP and AVDD are shorted because these pins are close like following picture.
Then, output of DACs become 0V and FSADJ become 0V as well.
The questions I would like you to answer are following.
- How is the output of DACs affected by VREF and COMP? (If you can share the configuration about Bandgap Reference and, the OPamp which inputs are FSADJ and VREF, I would appreciate it.)
- Why is the FSADJ 0V while COMP is applied 3.3V?
According to the block diagram of Figure1, COMP and FSADJ don't look like to have relation. - According to the Figure1, Bandgap reference is used only for power supply of DACs, correct?
As additional info, AVDD is 3.3V and VREF is 1.2V while 3.3V is applied on COMP.
Besides, the device is not broken because the IC can work as usual after applying 3.3V is stopped.
If you can answer even 1 question, please let me know.
Best regards,
Koyo
