The CS5466 is a low cost power meter solution combining two ΔΣ Analog-to-Digital Converters (ADC)’s, an energy-to-frequency converter, and energy pulse outputs on a single chip. It is designed to accurately measure and calculate energy for single phase 2- or 3- wire power metering applications with minimal external components.
Low frequency energy outputs, E1 and E2, supply average real power and can be used to drive a stepper motor or a mechanical counter; the high frequency energy output FOUT can be used for calibration; and NEG indicates negative power.
The CS5466 has configuration pins which allow for direct configuration of pulse output frequency, current channel input range, and high pass filter enable option. The CS5466 also has a power-on reset function which holds the part in reset until the supply reaches an operable level.

*Single Chip; Power Measurement Solution
*Energy Data Linearity: ±0.1% of Reading over 1000:1 Dynamic Range
*On-Chip functions: Measures Energy and Performs Energy-to-Pulse Conversions
*Meets Accuracy Spec for IEC 687/1036
*High Pass Filter Option
*Four Input Ranges for Current Channel
*On-Chip 2.5 V Reference (25 ppm/°C typ)
*Pulse Outputs for Stepper Motor or Mechanical Counter
*On-Chip Energy Direction Indicator
*Ground Referenced Input Signals with Single Supply
*High Frequency Output for Calibration
*On-Chip Power-on Reset
*Power Supply Configurations: VA+ = +5 V; AGND = 0 V; VD+ = +3.3 V to 5 V


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