In another method, an on-chip television interface adaptor (TIA) can be configured to take current as the input and give an output voltage proportional to the input current. A delta-sigma ADC or SAR ADC can be used to measure the voltage. A simple implementation of current measurement using PSoC creator components is shown below.
However, for AC Current measurement a rectifier circuit is needed for AC-to-DC conversion and then fed it to PSoC for measurement of RMS value.
Continue making other meters using PSoC here.
Shared by Ronak Desai and Arijit Karmakar, Cypress Semiconductor