Description
The CS5484 is a high-accuracy, four-channel, energy measurement analog front end.
The CS5484 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 through a configurable energy pulse, or direct UART/SPI™ serial access to on-chip registers. Instantaneous current, voltage, and power measurements are also available over the serial port. Multiple serial options are offered to allow customer flexibility. The SPI provides higher speed, and the 2-wire UART minimizes the cost of isolation where require
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
• 4 Independent 24-bit, 4th-order, Delta-Sigma Modulators
for Voltage and Current Measurements
• 4 Configurable Digital Outputs for Energy Pulses,
Zero-crossing, or Energy Direction
• Supports Shunt Resistor, CT, and 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
• 5mmx5mm 28-pin QFN Package