Hi all,
I tried to measure the current pass through R1 with INA225, and the simulation schematics is on the left while the VG waveform is on the right.
However, the result of VOUT is shown as following:
It supposed to be a 3ms-width pulse but turned out to be about only 1ms.
Somehow the pulse was truncated.
I have also set the REF pin to VS/2, and the output was normal (3ms, both sides swing).
I knew I would only get the positive swing when REF is grounded, but I wonder why the resulting pulse is 1ms only rather than 3ms?
Also, the output value did not return to zero (with several milivolts) after the pulse. Why?