Cirrus Logic Inc. CS5480-INZR

Description
The CS5480 is a high-accuracy, three-channel energy measurement analog front end. It incorporates independent, 4th-order Delta-Sigma analog-to-digital converters for every channel, reference circuitry, and the proven EXL signal processing core to provide active, reactive, and apparent energy measurement. Additionally, RMS and power factor calculations are available. Calculations are output via configurable energy pulse, or direct UART/SPI™ serial access to on-chip registers.

Features
Superior analog performance with ultra-low noise level and high SNR
Energy measurement accuracy of 0.1% over 4000:1 dynamic range
Current RMS measurement accuracy of 0.1% over 1000:1 dynamic range
3 independent 24-bit, 4th-order, Delta-Sigma modulators for voltage and current measurements
3 configurable digital outputs for energy pulses, zero-crossing, or energy direction
Supports shunt resistor, CT, and Rogowski coil current sensors
On-chip measurements and calculations:
Active, reactive, and apparent power
RMS voltage and current
Power factor and line frequency
Instantaneous voltage, current, and power
Overcurrent, voltage sag, and voltage swell detection
Ultra-fast on-chip digital calibration
Internal register protection via checksum and write protection
UART/SPI serial interface
On-chip temperature sensor
On-chip voltage reference (25ppm/°C Typ.)
Single 3.3V power supply
Ultra-fine phase compensation
Low power consumption: <13mW
Power supply configurations: GNDA GNDD 0V, VDDA 3.3V
4mm x 4mm, 24-pin QFN package

Applications
Energy metering
Power quality monitoring
Industrial automation
Renewable energy systems
Smart grid applications