Energy Measurement Circuit
A new versatile off-the-shelf energy measurement integrated circuit, the SA9604A–a three-phase device–is capable of bi-directional active and reactive energy, mains voltage and frequency measurement. It provides active and reactive energy, voltage and frequency data on a per phase basis. The data is read via a synchronous serial peripheral interface communications bus, with the individual register information available as 24-bit values. The device enables meter manufacturers to meet all the international specification requirements for Class 1 metering, or better.
SAMES–Inquire R.S. 122