hii alex , how are you doing
i bought the amc1100 chip and i conducted am experiment in our lab
i attached the high side and low side VDD1 and VDD2 to 5 volt different power supply so they are isolated GND (do not share the same GROUND)
my goal is to measure an AC alternating current with amplitude ranges from 0 to 100 mA at 50 HZ frequency .
.at the input i attached a 2.5 ohm shunt resistor so at the maximum amplitude of 100mA i will get the maximum allowed voltage of 250mV at the AMC1100 input .
i started the experiment with max current amplitude 100mA and each measurement i decreased the amplitude of input current by a 5mA and measured the output voltage of the AMC1100
i attached the results of the measurements in the attachment segment !!
what i found that the difference of the amplitude of the output voltage(i took the maximum peak of the sine wave) each time i decrease the current by 5mA is 0.04volts
so for each 5mA current decrease at the input. i get about 0.04 volts amplitude decrease at the AMC1100 output .
i am feeding the AMC110 input from a current transformer and i need my resolution to be multiple times higher from 0.04 ,in other words i am interested for every 1mA amplitude current change at the input i will get minimum of 0.1 volt amplitude difference or higher , and my question is how i can do that using the AMC isolation amplifiers family??
i would be very thankful for your help
amc1100-2.5ohm-current sense.xlsxamc1100-2.5ohm-current sense.xlsx
