HomeInternationalSingle phase energy metering ICs with automatic digital calibration

Single phase energy metering ICs with automatic digital calibration

The AS8118 and AS8168 1-phase energy metering ICs from austriamicrosystems offer meter manufacturers the most competitive energy metering system solution available on the market. The on-chip programmability of the input and output parameters and on-chip calibration of the new energy metering ICs from austriamicrosystems  ensures a reduced meter system cost.

The AS8118 provides 1-phase instantaneous energy pulse outputs. The AS8168, in addition, provides average energy pulse outputs, which allows for calibration and meter verification between consecutive energy output pulses.

The fast on-chip automatic digital calibration of the AS8118 and AS8168 ICs eliminates the need for a resistor network for meter system calibration. This unique feature not only provides a faster meter production cycle, but also reduces system cost and improves meter reliability through the reduction in external passive components.

In addition, the meter’s input and output parameters can be automatically programmed into the IC during the production cycle, to meet specific utility requirements. These parameters are:

  • Input gain setting of the current channel
  • LED output pulse rate selection
  • Stepper motor output pulse rate selection
  • Fast calibration output pulse rate selection
  • Anti-creep threshold setting.

These ICs can be programmed not once, but twice, ensuring meters using the AS8118 or AS8168 ICs can easily be re-configured and re-calibrated if required.

The AS8118 and AS8168 ICs allow meter manufacturers to exploit innovative ways to optimise the meter manufacturing process flow by means of the fast fully automated meter calibration and programming. The fast calibration and programming cycle considerably increases production calibration capacity without having to expand existing calibration infrastructure.

All metering ICs from austriamicrosystems far surpass the specification requirements laid out in the IEC and ANSI standards. The measured energy has less than 0.1% error over a dynamic range of 1000:1.