FEATURES
n sames Performs unidirectional power and energy measurement On-chip 64 segment LCD driver Meets the IEC 521/1036 Specification requirements for Class 1 AC Watt hour meters Total power consumption rating below 25 mW n Adaptable to different types of current sensors Operates over a wide temperature range Different pulse rate options available for power information LCD data input via a serial interface n n n n n n DESCRIPTION
The SAMES SA9122E Single Phase unidirectional active Power/Energy metering integrated circuit includes a seperate onchip 64 segment Liquid Crystal Display driver. The power/energy metering circuit generates a pulse rate output, proportional to the power consumption, while the LCD driver is programmable via a serial interface. The method of power calculation takes the power factor into account. Energy consumption is determined by the power measurement being integrated over time. The LCD driver is capable of driving 8 decimal digits (7 segment) and 8 announciators on a 4 track multiplexed backplane display.
