Description
The CS5464 is an integrated power measurement device which combines three ∆Σ analog-to-digital converters, power calculation engine, energy-to-frequency converter, and a serial interface on a single chip. It is designed to accurately measure instantaneous current and voltage and calculate VRMS, IRMS, instantaneous power, active power, apparent power, and reactive power for high-performance power measurement applications.

Features
• Energy Data Linearity: ±0.1% of Reading over 1000:1 Dynamic Range
• On-chip Functions:
    - Instantaneous Voltage, Current, and Power
    - IRMS and VRMS, Active, Reactive, and Apparent Power
    - Current Fault and Voltage Sag Detect
    - System Calibrations / Phase Compensation
    - Temperature Sensor
    - Energy-to-pulse Conversion
    - Positive-only Accumulation Mode
• Meets Accuracy Spec for IEC, ANSI, & JIS
• Low Power Consumption
• Tamper Detection in 2-Wire Distribution Systems
• GND-referenced Signals with Single Supply
• On-chip 2.5 V Reference (25 ppm/°C typ)
• Power Supply Monitor
• Simple Three-wire Digital Serial Interface
• “Auto-boot” Mode from Serial E2PROM.
• Power Supply Configurations
    VA+ = +5 V; AGND = 0 V; VD+ = +3.3 V to +5 V