AS8118

www.DataSheet4U.com AS8118 Single Phase Instantaneous Energy Metering IC with On-Chip Calibration, Stepper Motor Drive and LED Output DATA SHEET 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’ kWh meter applications, where the IC directly drives an electromechanical counter with a two-phase stepper motor, or for more complex meter applications, the AS8118 interfaces directly to a micro-controller. The highly integrated AS8118 design includes all the required functional blocks. The blocks comprise 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 resi...