AS8118 Datasheet | austriamicrosystems AG

Features - - - - Description The AS8118 is a very accurate single-phase bi-directional instantaneous energy measurement integrated circuit, which surpasses all the accuracy requirements for IEC1036 alternating current static watt-hour meters. The measured energy is converted into pulses with the number of output pulses being proportional to the measured energy. The AS8118 is ideal for use in ‘stand alone’ k Wh meter applications, where the IC directly drives an electromechanical counter with a two-phase stepper motor, or for more plex meter applications, the AS8118 interfaces directly to a micro-controller. The highly integrated AS8118 design includes all the required functional blocks. The blocks prise of analog to digital converters (ADC) for the voltage and current channels, digital filters, a digital signal processing block, a AGND Buffer VP VN Σ∆-mod Digital Filter Power Calculation IP IN Σ∆-mod Digital Filter VREF XIN XOUT PROG VDDD VDDA VSSD VSSA Extremely accurate, surpassing the accuracy requirements of the IEC 1036 Specification less than 0.1% error over a 600 : 1 dynamic range On-chip programmable current input gain suitable for use with low-resistance shunt resistor or current transformer On-chip programming for output pulse rate selection On-chip calibration eliminates the need for an external resistor network or trim-potentiometer Programmable on-chip creep prevention under no-load condition All on-chip programmable functions may be reprogrammed a second time Outputs directly drive an electromechanical counter or counters with a two phase stepper motor and consumption LED indicator Fast calibration pulse output for high speed manual or automated calibration On-chip voltage reference and power supply monitoring Bi-directional or unidirectional energy measurement, with direction indication output available control block and non-volatile calibration memory for the on-chip programming. The on-chip programming enables the setting of the...