When using the ACS723 to measure a pulsed AC signal, can anyone help me understand how short of a pulse this can measure (in microseconds)?
If the limitation relates to the speed of an arduino analogRead, I see some ADC breakouts that do 3300 samples per second but looking for any advice.
The ACS723 chip itself samples at either 20 or 80kHz so any limitation would be in the analog pin and code you’re using on your micro-controller.
You will need to check the data sheets for the IC used on your uC of choice and see what kind of delays that boards libraries are introducing. It might not be easy to find this information and you might need to do some testing to get good numbers.