The theoretical current is 10sinwt A, first use ACS725LLCTR-30AB-T to convert the current into a voltage amount, and then the amplifier.
The following questions exist:
1. The ACS725LLCTR-30AB-T has an initial voltage of Vcc / 2, and the 1A current is converted to 0.033V voltage. A slight fluctuation will make the error larger. I don't know if there is a better circuit to replace it.
2. When only testing the op amp, it was found that the voltages on pins 2, 3, 5, and 6 were not equal, and the chip was not damaged. I don't know what happened.
Please give pointers, thank you