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CS5480 Arkusz danych(PDF) 1 Page - Cirrus Logic |
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CS5480 Arkusz danych(HTML) 1 Page - Cirrus Logic |
1 / 70 page Copyright Cirrus Logic, Inc. 2013 (All Rights Reserved) Cirrus Logic, Inc. http://www.cirrus.com CS5480 Three Channel Energy Measurement IC 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 ORDERING INFORMATION See Page 69. Description The CS5480 is a high-accuracy, three-channel, energy mea- surement analog front end. The CS5480 incorporates independent, 4th order, Delta-Sigma analog-to-digital converters for every channel, reference cir- cuitry, and the proven EXL signal processing core to provide active, reactive, and apparent energy measurement. In addi- tion, RMS and power factor calculations are available. Calculations are output via 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 required. Three configurable digital outputs provide energy pulses, zero- crossing, energy direction, and interrupt functions. Interrupts can be generated for a variety of conditions including voltage sag or swell, overcurrent, and more. On-chip register integrity is assured via checksum and write protection. The CS5480 is designed to interface to a variety of voltage and current sen- sors including shunt resistors, current transformers, and Rogowski coils. On-chip functionality makes digital calibration simple and ul- tra-fast, minimizing the time required at the end of the customer production line. Performance across temperature is ensured with an on-chip voltage reference with very low drift. A single 3.3V power supply is required, and power consump- tion is very low at <13mW. To minimize space requirements, the CS5480 is offered in a low-cost, 4mm x 4mm 24-pin QFN package. VDDA GNDA TX / SDO RX / SDI UART/SPI Serial Interface Energy To Pulse Conversion RESET Calculation 4th Order Modulator Digital Filter HPF Option DO1 DO2 Digital Filter 4th Order Modulator HPF Option Temperature Sensor VREF+ Voltage Reference VDDD VREF- System Clock IIN2+ IIN2- PGA IIN1+ IIN1- PGA 10x CS5480 GNDD CS SCLK SSEL DO3 VIN+ VIN- Clock Generator XIN XOUT MODE Digital Filter HPF Option 4th Order Modulator MAR’13 DS980F3 |
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