CS5464K-ISZR

Overview

The CS5464K-ISZR is a single-phase power and energy measurement integrated circuit manufactured by Cirrus Logic. It integrates three delta-sigma analog-to-digital converters, a power calculation engine, an energy-to-frequency converter, and a serial interface on a single chip. The device accurately measures instantaneous voltage and current to calculate VRMS, IRMS, active, reactive, and apparent power. It features a ±0.1% energy data linearity over a 1000:1 dynamic range and includes on-chip functions such as temperature sensing, fault detection, and system calibration. The component operates with a +5 V supply for analog circuits and a +3.3 V to +5 V supply for digital logic.

Feature Summary

• Integrates three delta-sigma ADCs with a dedicated power calculation engine for comprehensive energy metrics
• Provides high-precision measurement capabilities meeting IEC, ANSI, and JIS accuracy specifications
• Includes built-in tamper detection mechanisms suitable for two-wire distribution systems
• Features an auto-boot mode allowing operation directly from serial E2PROM

Applications

• High-performance residential and commercial electricity meters
• Single-phase power monitoring systems
• Energy management devices requiring precise active and reactive power calculation

Procurement Notes

Verify the specific suffix K against official Cirrus Logic documentation to confirm package or temperature grade variations. Confirm end-of-life status and availability through authorized distributors, as this component may be subject to production changes or obsolescence notices. Ensure compatibility with existing board designs regarding the required dual-supply configuration.

Selection Notes

Select this component for applications requiring integrated single-phase energy metering with high linearity. It is suitable for designs needing direct calculation of complex power parameters without external microcontrollers for heavy computation. Consider the requirement for separate analog and digital power supplies when designing the PCB layout and power regulation stages.

Part Context

This part belongs to the CS546x family of precision analog-to-digital converters designed for energy metering. Cirrus Logic utilizes this series to provide complete solutions for utility metering applications, combining high-resolution conversion with digital signal processing capabilities to ensure accurate billing and monitoring in power distribution networks.

Replacement Considerations

CS5464K-ISZ is a documented alternative variant within the same product family.