Austriamicrosystems’ AG single phase energy meter integrated circuit product family offers meter manufacturers high performance, low cost meter system solutions, suitable for virtually any meter system architecture.

The standard product ICs combine precision measurement with better than 0.1% accuracy over a dynamic range of 1000:1 and unprecedented cost benefits through reduced external components and faster meter production and calibration. These metering ICs far surpass the specification requirements laid out in the IEC and ANSI standards.

STEPPER MOTOR METERS

The AS8118 and AS8168 1-phase energy metering ICs are ideal for stepper motor meter designs. They have on-chip digital meter calibration and programmability of all the variable input and output parameters. These programmable parameters include current channel input gain selection, output pulse rate selection for the LED pulse output, the stepper motor pulse output and the fast calibration pulse output. The anti-creep threshold is also selectable.

The automatic digital programming and calibration of the AS8118 and AS8168 ICs provide for a faster meter production cycle, thus increasing meter production capacity by over 20%, reducing system meter cost and improving meter reliability.

TIME-OF-USE LCD METERS

The AS8218 and AS8228 1-phase energy metering ICs offer the meter manufacturer highly integrated time-of-use LCD meter system solutions. The ICs incorporate all the required functional blocks for 1-phase, two-current metering, including a precision energy measurement frontend, a micro-controller with two universal asynchronous receiver transmitters for external communication, a realtime clock/calendar, up to 96-segment LCD driver and up to 12 programmable multi-purpose inputs/outputs.

The digital signal processor (DSP) calculates active energy, MAINS voltage and MAINS current. Reactive power and apparent power can also be calculated. A programmable LED energy pulse output is provided for fast automatic on-chip digital calibration.

All utility anti-tamper requirements are provided for in the precision, two-current input analogue front-end and the user configurable DSP, with digital phase correction for use with current transformers (CT) or a combination of shunt and CT.

The AS8218 and AS8228 ICs require a minimum of external components, which enable highly reliable, cost effective meter system designs.