CS5467-ISZ

Overview

The CS5467-ISZ is a four-channel single-phase power and energy integrated circuit manufactured by Cirrus Logic. It functions as a watt-hour meter on a chip, measuring line voltage and current to calculate active, reactive, and apparent power, energy, power factor, and RMS values. The device features an energy linearity of ±0.1% over a 1000:1 dynamic range. It includes on-chip calibration, phase compensation, a temperature sensor, and energy pulse outputs. The IC supports a three-wire serial interface for communication with microcontrollers or EEPROMs.

Feature Summary

• Measures line voltage and current to compute active, reactive, and apparent power along with energy and power factor.
• Provides RMS voltage and current calculations with high energy linearity across a wide dynamic range.
• Integrates current fault detection, voltage sag detection, and voltage tamper correction capabilities.
• Includes an on-chip 2.5 V reference and a power supply monitor function for system stability.

Applications

• Single-phase watt-hour metering systems
• Power quality monitoring equipment
• Energy management subsystems

Procurement Notes

Verify the specific suffix ISZ indicates RoHS compliance when sourcing this component. Confirm the package type matches the SSOP-28 specification required for your PCB layout. Ensure the operating voltage range aligns with your system's VA+ and VD+ supply rails before finalizing procurement.

Selection Notes

Select the CS5467-ISZ for applications requiring precise single-phase energy measurement without external calibration components. This part is suitable for designs needing integrated fault detection and tamper correction. Consider the serial interface requirements for connecting to the host microcontroller. Verify that the thermal performance meets the ambient operating conditions of the target enclosure.

Part Context

This component belongs to the CS5467 series of power and energy ICs from Cirrus Logic. It is designed to replace discrete metering solutions by integrating multiple analog-to-digital conversion and digital signal processing functions into a single package. The series is commonly used in utility metering and industrial power monitoring applications.

Replacement Considerations

The CS5467-IS is a non-RoHS compliant variant of the same functional device. The CDB5467U is an evaluation board for this IC, not a direct replacement. No other direct pin-compatible substitutes are confirmed in public documentation.