CS5461AK-ISZ

Overview

The CS5461AK-ISZ is a single-phase, bi-directional power and energy integrated circuit manufactured by Cirrus Logic. It integrates dual 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 current and voltage to calculate VRMS, IRMS, apparent power, and active power for single-phase, two- or three-wire metering applications. It features ±0.1% energy data linearity over a 1000:1 dynamic range and meets IEC, ANSI, and JIS accuracy specifications.

Feature Summary

• Integrates dual delta-sigma ADCs with a dedicated power calculation engine for precise measurement of instantaneous voltage, current, and power.
• Provides on-chip energy-to-pulse conversion suitable for driving mechanical counters or stepper motors.
• Includes system calibrations, phase compensation, and a temperature sensor within the single package.
• Features a simple three-wire digital serial interface and supports auto-boot mode from serial EEPROM.

Applications

• Single-phase, two-wire power metering systems
• Single-phase, three-wire power metering systems
• Mechanical counter and stepper motor drive interfaces
• System calibration and phase compensation circuits

Procurement Notes

Verify component authenticity through authorized distributors as this part may be subject to discontinuation notices. Confirm specific ordering suffixes match exact pinout and functional requirements. Check for recent Product Change Notifications regarding packaging or labeling updates. Ensure supply chain stability due to potential end-of-life status. Validate RoHS compliance documentation prior to integration into final assemblies.

Selection Notes

Select this component for applications requiring high linearity and wide dynamic range in single-phase metering. Consider the integrated energy-to-frequency converter if mechanical counter interfacing is required. Evaluate the need for on-chip phase compensation and calibration features to reduce external component count. Verify compatibility with the specified power supply configurations and serial interface protocols before implementation.

Part Context

The CS5461AK-ISZ belongs to the CS5461A series of power monitoring ICs from Cirrus Logic. This family is designed for accurate energy measurement in residential and commercial utility applications. The device replaces discrete solutions by combining analog front-end processing with digital calculation capabilities on a single silicon die.

Replacement Considerations

Public confirmed substitute part numbers include CS5461A-ISZ.

FAQ

What is the energy data linearity specification of the CS5461AK-ISZ?

The device provides ±0.1% of reading linearity over a 1000:1 dynamic range.

Does the CS5461AK-ISZ support automatic booting from external memory?

Yes, it includes an auto-boot mode that allows operation from a serial EEPROM.

What types of power metering applications is this IC designed for?

It is designed for single-phase, two- or three-wire power metering applications.