CS5467-ISZR

Overview

The CS5467-ISZR is a single-phase power and energy integrated circuit designed for high-precision watt-hour metering applications. It measures line voltage and current to calculate active, reactive, and apparent power, as well as energy, power factor, and RMS values. The device features an on-chip 2.5 V reference with typical stability of 25 ppm per degree Celsius and includes a temperature sensor. It supports ground-referenced inputs with a single supply configuration and communicates via a three-wire serial interface to a microcontroller or EEPROM.

Feature Summary

• Integrates voltage and current measurement capabilities with on-chip calibration and phase compensation functions.
• Provides detection for current faults and voltage sag conditions alongside energy pulse outputs.
• Includes a power supply monitor function and supports voltage tamper correction mechanisms.

Applications

• Residential electricity metering systems
• Single-phase power monitoring devices
• Energy management instrumentation

Procurement Notes

Verify the specific suffix ISZR against official Cirrus Logic documentation to confirm package type and tape-and-reel specifications. Confirm RoHS compliance status and lead times directly with authorized distributors, as availability may vary. Ensure the procurement channel is certified to guarantee component authenticity and traceability for metering applications.

Selection Notes

Select this component when designing single-phase meters requiring integrated power calculation without external digital signal processing. Consider the SSOP-24 package constraints and the need for a three-wire serial interface compatible with the host microcontroller. Evaluate the operating temperature range and supply voltage requirements against the target application environment.

Part Context

This part belongs to the CS5467 series of four-channel power and energy ICs from Cirrus Logic. It is engineered to meet accuracy specifications defined by IEC, ANSI, and JIS standards for utility metering. The series emphasizes low power consumption and high linearity over a wide dynamic range, serving as a complete solution for precise energy measurement in residential sectors.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing board layouts if considering alternative metering ICs from the same manufacturer family.