Low-Cost Power/Energy IC with Pulse Output

The CS5466 is a low-cost solution for digital power meter applications that features dual Delta-Sigma analog-to-digital converters, an energy-to-frequency converter and energy-pulse outputs on a single chip. The CS5466 is designed to accurately measure and calculate energy for single-phase, two- or three-wire power metering applications within minimal external components.
The low-frequency pulse outputs, E1 and E2, provide pulses at a frequency which is proportional to the active power and can be used to drive a stepper motor or mechanical counter. Energy direction output, NEG, indicates when pulse outputs E1 and E2 represent negative active power. The high-frequency pulse output FOUT is designed to assist in system calibration.
The CS5466 has configuration pins which allow for direct configuration of pulse output frequency, current-channel input range and high-pass filter enable option. It also has a power-on reset function which holds the part in reset until the supply reaches an operable level.

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Technology

Energy Measurement

Features

  • Energy data linearity: ±0.1% of reading over 1000:1 dynamic range
  • On-chip functions: measures active energy and performs energy-to-pulse conversions
  • Meets accuracy spec for IEC, ANSI, JIS
  • Current Channel Features
    • 24-bit, fourth-order, Delta-Sigma A/D converter for precise measurements
    • High-pass filter
    • Four input gain range options
  • On-chip 2.5 V reference (tempco 25 ppm/°C typ)
  • On-chip energy direction indicator
  • Package: 24-pin SSOP; lead-free assembly

Parametric Specifications

Not Recommended for New Designs
Recommended Replacement: CS5490

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