AT73C500

Features Fulfills IEC 1036, Class 1 Accuracy Requirements Fulfills IEC 687, Class 0.5 and Class 0.2 Accuracy, with External Temperature Compensated Voltage Reference Simultaneous Active, Reactive and Apparent Power and Energy Measurement Power Factor, Frequency, Voltage and Current Measurement Single and Poly Phase Operation Three Basic Operating Modes: Stand-Alone Mode, Microprocessor Mode and MultiChannel Mode Flexible Interfacing, 8-bit Microprocessor Interface, 8-bit Status Output and Eight Impulse Outputs Calibration of Gain and Phase Error Compensation of the Non-Linearity of Low Power Measurement Adjustable Starting Current and Meter Constant Measurement Bandwidth of 1000 Hz Tamper Proof Design Single +5V Supply Chip Set Solution for Watt-Hour Meters AT73C500 with AT73C501 or AT73C502 Description A two chip solution, consisting of AT73C500 and AT73C501 (or AT73C502), offers all main features required for the measurement and calculation of various power and energy quantities in static Watt-hour meters. The devices operate according to IEC1036, class 1, specification. IEC 687, class 0.5 and 0.2 requirements are fulfilled when used with external temperature compensated voltage reference. The AT73C501 contains six, high-performance, Sigma-Delta analog-to-digital converters (ADC). The AT73C500 is based on an efficient digital signal processor (DSP) core and it supports interfacing both with the AT73C501 and with an external microprocessor. The AT...