CS5461A-ISZ

Overview

The CS5461A-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.
• Includes an on-chip energy-to-pulse converter designed to drive mechanical counters or stepper motors directly.
• Provides system calibration capabilities and phase compensation alongside a temperature sensor and voltage sag detection.
• 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
• Energy monitoring devices requiring high linearity

Procurement Notes

Verify component status carefully as the CS5461A-ISZ has been officially discontinued by Cirrus Logic. Confirm availability through authorized distributors or secondary markets, noting that supply may be limited or restricted in certain regions. Ensure compatibility with existing designs before sourcing obsolete inventory.

Selection Notes

Select this component for single-phase metering applications requiring integrated analog-to-digital conversion and power calculation. It is suitable for designs needing direct mechanical counter driving via pulse output. Consider the specific power supply configurations and serial interface requirements when integrating into the system architecture.

Part Context

The CS5461A belongs to the CS546x IC family from Cirrus Logic, which focuses on high-precision analog and digital signal processing for energy markets. This series is designed to minimize external components while providing accurate power measurement solutions for residential and commercial metering applications.

Replacement Considerations

CS5461AK-ISZ is listed as a recommended alternative by the manufacturer.