SA9122E

* 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 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 SA9122E 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 SA9122E takes the power factor into account. Energy consumption is determined by the power measurement being integrated over time.

The LCD driver SA9122E is capable of driving 8 decimal digits (7 segment) and 8 announciators on a 4 track multiplexed backplane display.

This innovative combination energy metering/ LCD display driver integrated circuit of SA9122E has been designed to provide meter designers with flexibility in the choice of the -controller employed, and SA9122E is ideally suited for applications such as residential municipal metering and factory energy metering and control.

The SA9122E integrated circuit is available in both 40 pin dual-in-line plastic (DIP-40), as well as 44 pin plastic leaded chip carrier (PLCC-44) package types.