tony_lth
Advanced Member level 5
Hi. Gurus,
I designed a SCH as the following picture. I used a 1.8V fixed voltage LDO, and linked its output to STM32 VDDA_VREF+ directly.
Now the issue is the LDO output is 2.25V, not 1.8V.
If I broke the trace into the VDDA_VREF+, the LDO output is right, i.e. 1.8V.
So what's the reason for that? Is the hardware circuit design right or not?
Best,
Tony Liu
I designed a SCH as the following picture. I used a 1.8V fixed voltage LDO, and linked its output to STM32 VDDA_VREF+ directly.
Now the issue is the LDO output is 2.25V, not 1.8V.
If I broke the trace into the VDDA_VREF+, the LDO output is right, i.e. 1.8V.
So what's the reason for that? Is the hardware circuit design right or not?
Best,
Tony Liu