Hello,
On some of our boards the DA7212 draws a high current (up to 1.5A for about 5 ms) during initialization, when the line output is enabled (register 0x6D).This happens about 10 ms after the first I2C write and probably internal circuits are not yet correctly biased. The datasheet only mentions a 25 ms typical start-up time for the VMID supply in chapter 12.1.
In the example init scripts you always have a 40 ms delay after the first I2C communication.
Is this for this reason and is this always sufficient? Do we have to observe other timings during startup? Does the SLC2 solve this timing issues automatically?
Thank you and best regards
Martin
Hi,
Yes, this system level controller provides pop-free and click-free start-up under most conditions.
Can you share me your script & schematic to check further . (You can inbox me )
Thanks
AB
Hello AB,
Sorry for the late reply. The tests took some time.
I think the delay of 40 ms solved the problem.We also use the system controller but with the delay the current spike is no longer there.
Thank you!