Low-Cost Power/Energy IC with Pulse Output

The CS5462 enables digital power meter manufacturers to provide highly accurate, cost-effective solutions for measuring power usage. This IC is an integrated power-measurement device that combines two Delta Sigma analog/digital converters (ADCs) and a frequency pulse output on a single chip. Designed for residential single-phase power meter applications, the device accurately measures energy and performs energy-to-pulse conversions.
The device’s low-frequency energy outputs, E1 and E2, supply average real power and can be used to drive a stepper motor or a mechanical counter, while the high-frequency energy output FOUT can be used for calibration. The CS5462 allows for direct configuration of pulse-output format, pulse-output frequency, current channel input range, high-pass filter option and on-chip calibration.
The CS5462 offers excellent temperature stability for long-life operation. The device reduces total bill-of-materials (BOM) cost with the inclusion of a patented calibration technique that eliminates the need for external potentiometers, off-chip memory or resistor arrays. The CS5462 delivers accurate power-usage measurements and is an ideal low-cost solution for residential electronic power meter applications.

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Technology

Energy Measurement

Features

  • Energy data linearity: ±0.1% of reading over 1000:1 dynamic range
  • On-chip functions: measures energy and performs energy-to-pulse conversions
  • On-chip system calibration option
  • Meets accuracy spec for IEC, ANSI, JIS
  • Low-power consumption
  • High-pass filter option for both I and V
  • Adjustable input range on current channel
  • On-chip 2.5 V reference (25 ppm/°C typ.)
  • Configurable pulse outputs for stepper motor or mechanical counter
  • On-chip energy direction indicator
  • Ground-reference 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
  • Package: 24-pin SSOP; lead-free assembly

Parametric Specifications

Not Recommended for New Designs
Recommended Replacement: CS5490

Technical Documents

CS5462 Product Data Sheet

DS547F1 : 133 Kb

CS5462 Product Bulletin

0105-0903-PB-LP : 516 Kb

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