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CS5490 データシート(PDF) 1 Page - Cirrus Logic |
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CS5490 データシート(HTML) 1 Page - Cirrus Logic |
1 / 56 page Copyright Cirrus Logic, Inc. 2012 (All Rights Reserved) Cirrus Logic, Inc. http://www.cirrus.com CS5490 Two Channel Energy Measurement IC Features & Description • Superior Analog Performance with Ultra-low Noise Level & High SNR • Energy Measurement Accuracy of 0.1% over a 4000:1 Dynamic Range • Two Independent 24-bit, 4th-order, Delta-Sigma Modulators for Voltage and Current Measurements • Configurable Digital Output for Energy Pulses, Interrupt, zero-crossing, and 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 • Configurable No-load Threshold for Anti-creep • Internal Register Protection via Checksum and Write Protection • UART Serial Interface • On-chip Temperature Sensor • On-chip Voltage Reference (25ppm/°C Typ.) • Single 3.3 V Power Supply • Ultra-fine Phase Compensation • Low Power Consumption: <13 mW • Power Supply Configurations: - GNDA = 0 V, VDDA: +3.3 V • Low-cost 16-pin SOIC Package Description The CS5490 is a high-accuracy, two-channel, energy measure- ment analog front end. The CS5490 incorporates independent 4th order Delta-Sigma an- alog-to-digital converters for both channels, reference circuitry, and the proven EXL signal processing core to provide active, re- active, and apparent energy measurement. In addition, RMS and power factor calculations are available. Calculations are output via a configurable energy pulse, or direct UART serial access to on-chip registers. Instantaneous current, voltage, and power measurements are also available over the serial port. The two-wire UART minimizes the cost of isolation where required. A configurable digital output provides energy pulses, zero-cross- ing, energy direction, or 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 CS5490 is designed to in- terface to a variety of voltage and current sensors, including shunt resistors, current transformers, and Rogowski coils. On-chip functionality makes digital calibration simple and ultra fast to minimize the time required at the end of the customer pro- duction line. Performance across temperature is ensured with an on-chip voltage reference with low drift. A single 3.3V power sup- ply is required, and power consumption is low at <13mW. To minimize space requirements, the CS5490 is offered in a low-cost 16-pin SOIC package. ORDERING INFORMATION See Page 56. VDDA GNDA RESET Calculation Temperature Sensor VREF+ Voltage Reference VDDD VREF- System Clock CS5490 MODE Clock Generator XIN XOUT TX RX UART Serial Interface 4th Order Modulator Digital Filter HPF Option IIN+ IIN- PGA Digital Filter HPF Option 10x VIN+ VIN- 4th Order Modulator DO Configurable Digital Output JUN’12 DS982F2 |
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同様の説明 - CS5490 |
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