CS5467K-ISZ

Overview

The CS5467K-ISZ is a four-channel single-phase power and energy metering IC from Cirrus Logic. It measures line voltage and current to calculate active, reactive, and apparent power, energy, power factor, and RMS values. The device features an on-chip 2.5 V reference with 25 ppm/°C temperature coefficient and includes calibration and phase compensation functions. It supports a three-wire serial interface for communication with microcontrollers or EEPROMs. Operating specifications include a supply voltage range of 3.135 V to 5.25 V for digital logic and 4.75 V to 5.25 V for analog circuits, with a typical operating current of 2.9 mA.

Feature Summary

• Integrated measurement of active, reactive, and apparent power along with energy accumulation
• On-chip precision voltage reference and temperature sensor for enhanced stability
• Supports current fault detection and voltage sag monitoring capabilities
• Provides calibrated RMS voltage and current calculations

Applications

• Single-phase watt-hour metering systems
• Power quality monitoring devices
• Smart energy management platforms

Procurement Notes

Verify the specific suffix 'K' against official Cirrus Logic documentation to confirm if it denotes a specific tape-and-reel packaging variant or a distinct qualification grade compared to standard versions. Ensure compatibility with required industrial temperature ranges and check for any obsolete status notifications prior to procurement.

Selection Notes

Select this component for applications requiring high-accuracy single-phase energy measurement with integrated signal conditioning. Consider the SSOP package constraints and verify that the system design accommodates the required serial interface protocol. Evaluate the need for external calibration versus utilizing the internal compensation features.

Part Context

This part belongs to the CS546x family of power monitoring ICs designed for utility-grade metering. It serves as a complete solution for measuring electrical parameters in single-phase networks. The device integrates analog front-end processing with digital calculation engines to deliver precise energy data without extensive external components.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.