Description
   The CS5480 is a high-accuracy, three-channel, energy measurement analog front end.
   The CS5480 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. In addition, 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 &
   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, & Rogowski Coil Current
   Sensors
• On-chip Measurements & 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