Pic18f87j72 is a high-performance MCU with nanowatt technology, two 24 bit analog front ends (AFE) and LCD drivers. The SINAD of each channel is – 90dB, thd is – 101dbc, SFDR is 103dB, low drift internal reference voltage (12 ppm / ℃), programmable data rate is up to 64ksps, and the gain is up to 32V / v. the target applications are electric meters, power measurement and monitoring, portable instruments and medical monitoring. Pic18f87j72 realizes single-phase ammeter circuit:

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