DESCRIPTION

The SAMES SA9110A Three Phase bidirectional energy metering integrated circuit has an integrated Liquid Crystal Display (LCD) driver for a 7 digit (7 segment) display as well as 4 multiple tariff registers. The SA9110A performs the active power calculation.

FEATURES

■ Performs bidirectional energy metering and directly drives a LCD with 7 digits plus announciators

■ 4 externally selectable on-chip tariff registers

■ An additional total energy register

■ Meets the IEC 521/1036 Specification requirements for Class 1 AC Watt hour meters

■ Optical interface for electronic reading according to IEC1107 Mode D

■ Pulse output for calibration

■ Total power consumption rating below 40mW

■ Adaptable to different types of current sensors

■ Operates over a wide temperature range

■ Precision voltage reference on-chip

■ Protected against ESD