Original question:
ADS8556: Voltage value on REFC pin and power sequencing of ADS8556
Hi team,
Regarding to this thread,
my customer is trying to power up AVDD and HVDD almost at the same time. Below is the wavevform. The delta between HVDD and AVDD is typ. 1.3V.
Regards,
Ohashi
Hello Ohashi-san,
Does this powering up sequence seems to be ok?
In the thread, it is said that "When the IHVDD is higher than the specified value, the chip may overheat.". What is the limit for the IHVDD?
Let me take a look at both and let you know later next week.
It is clear that V_AVDD is not coming first as recommended so we will have to see if we're any violating rules. The problem is I can't find the I_HVDD specification so I will have to ask the team internally.
Best,
-Cole
