Description

The CS5461A-ISZ is an integrated power measurement device designed for energy metering applications. With its combination of two ∆Σ analog-to-digital converters, power calculation engine, energy-to-frequency converter, and a serial interface on a single chip, it provides accurate measurement of instantaneous current and voltage. The CS5461A-ISZ can calculate VRMS, IRMS, instantaneous power, apparent power, and active power for single-phase, 2- or 3-wire power metering applications.

Specifications and features

- Energy Data Linearity: ±0.1% of Reading over 1000:1 Dynamic Range

- On-chip Functions including instantaneous voltage, current, and power measurement

- IRMS and VRMS calculation, apparent and active power measurement

- Energy-to-pulse conversion for mechanical counter/stepper motor drive

- System calibrations and phase compensation

- Temperature Sensor

- Voltage Sag Detect

- Meets Accuracy Spec for IEC, ANSI, & JIS

- Low Power Consumption

- Current Input Optimized for Sense Resistor

- GND-referenced Signals with Single Supply

- On-chip 2.5 V Reference (25 ppm/°C typ)

- Power Supply Monitor

- Simple Three-wire Digital Serial Interface

- “Auto-boot” Mode from Serial E2PROM

- Power Supply Configurations: VA+ = +5 V; AGND = 0 V; VD+ = +3.3 V to +5 V

Application Scenarios

The CS5461A-ISZ is suitable for various energy metering applications including residential and industrial energy management systems, electricity billing, and energy monitoring and control.

Comparison

- Accurate measurement of current and voltage

- Calculation of VRMS, IRMS, instantaneous power, apparent power, and active power

- Energy-to-pulse conversion for mechanical counter/stepper motor drive

- Low power consumption

- Meets accuracy specifications for IEC, ANSI, & JIS

- Simple three-wire digital serial interface

- Power supply configurations: VA+ = +5 V; AGND = 0 V; VD+ = +3.3 V to +5 V

- Limited to single-phase, 2- or 3-wire power metering applications