SA9903B

*Stresses above those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress rating only. Functional operation of the device at these or any other condition above those indicated in the operational sections of this specification, is not implied. Exposure to Absolute Maximum Ratings for extended periods may affect device reliability.

The SAMES SA9903B is a single phase bi-directional energy/power metering integrated circuit that performs measurement of active and reactive power, mains voltage and mains frequency.

The SA9903B is pin compatible to the SA9603B. New features include, RMS mains voltage and accurate reactive power
measurements.

Measured values for active and reactive energy, the mains voltage and frequency of SA9903B are accessible through a SPI bus from 24 bit registers.

This innovative universal single phase power/energy metering integrated circuit, SA9903B is ideally suited for energy calculations in applications such as electricity dispensing systems (ED's), residential municipal metering and factory energy metering and control.

TheSA9903B integrated circuit is available in both 20 pin dualin- line plastic (DIP-20), as well as 20 pin small outline (SOIC- 20) package types.