</a>模數(shù)轉(zhuǎn)換" title="模數(shù)轉(zhuǎn)換">模數(shù)轉(zhuǎn)換" title="模數(shù)轉(zhuǎn)換">模數(shù)轉(zhuǎn)換器(ADC),基準(zhǔn)電路,并提供EXL信號處理核,以進行有用,無用和表觀功率測量.支持并聯(lián)電阻,CT和Rogowski線圈電流傳感器,動態(tài)范圍4000:1的能量測量精度0.1%,動態(tài)范圍1000:1的電流RMS測量精度0.1%,單電源3.3V工作,功耗低于13mW.本文介紹了CS5484主要特性,方框圖, 單相三線I2S電表的典型連接框圖,以及CDB5484U評估板主要特性,框圖,采用CDB5484U評估板的并聯(lián)傳感器, 電流變壓器和Rogowski線圈電流傳感器的電表框圖,評估板電路圖,材料清單以及PCB元件布局圖與走線圖.
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 required.
Four 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 CS5484 is designed to interface 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, minimizing the time required at the end of the customer production line. Performance across temperature is ensured with an on-chip voltage reference with low drift. A single 3.3V power supply is required, and power consumption is low at <13mW. To minimize space requirements, the CS5484 is offered in a low-cost, 5mm x5mm 28-pin QFN package.
CS5484主要特性:
• 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 (25 ppm/℃ Typ.)
• Single 3.3V Power Supply
• Ultra-fine Phase Compensation
• Low Power Consumption: <13 mW
• Power Supply Configurations
- GNDA = GNDD = 0 V, VDDA = +3.3 V
• 5mmx5mm 28-pin QFN Package
圖1.CS5484方框圖
圖2.CS5484典型連接框圖(單相三線I2S電表)
CDB5484/80/90U 評估板
The CDB5484U is an extensive tool designed to evaluate the functionality and performance of Cirrus Logic’s CS5484 power/ energy measurement device.
Multiple analog input connection options, configuration input filters, direct and isolated digital interfaces, multiple power supply options, an onboard programmable microcontroller, and visual LEDs with an LCD panel make the board a flexible and powerful customer development tool for various power/energy measurement applications.
The GUI software provides easy and complete access and control to the onboard CS5484 device. It also includes the function of raw ADC data collection with time domain, frequency domain, and histogram analysis.
The board is partitioned into two main sections: analog and digital. The analog section consists of the CS5484, passive anti-aliasing filters, and a high-voltage section with attenuation resistor networks. The digital section consists of the C8051F342 microcontroller, LCD, hardware test switches, reset circuitry, and USB interface. The board also has a user-friendly power supply connection.
CDB5484U評估板主要特性:
• Standalone Power Meter Application
• Voltage and Current Interfaces
• Low- and High-voltage Sensor Connections
• Adaptable Sensor Filters Onboard
• USB Communication with PC
• UART/SPI Optically Isolated Communication
• Onboard C8051F342 Microcontroller
• Single Supply Operation USB or 5V
• Onboard DC-DC Converter and Regulator
• LCD Power Monitor Display
• LabWindows®/CVI® GUI Software
– Full Register Setup and Chip Control
– Simplified Register
– Quick Calibration Control
– FFT Analysis
– Time Domain Analysis
– Noise Histogram Analysis
• Voltage Reference Access
圖3. CDB5484U評估板外形圖
圖4. CDB5484U評估板方框圖
圖5. CDB5484U并聯(lián)傳感器電表框圖
圖6. CDB5484U電流變壓器電表框圖
圖7. CDB5484U Rogowski線圈電表框圖
圖8. CDB5484U評估板電路圖:模擬輸入
圖9. CDB5484U評估板電路圖:CS5484和插座
圖10. CDB5484U評估板電路圖:MCU和USB接口
CDB5484U評估板材料清單:
圖11. CDB5484U評估板 PCB元件布局圖:頂層
圖12. CDB5484U評估板 PCB走線圖:頂層
圖13. CDB5484U評估板 PCB走線圖:底層
詳情請見:
http://www.cirrus.com/en/pubs/proDatasheet/CS5484_F1.pdf
和
http://www.cirrus.com/en/pubs/rdDatasheet/CDB5484U_DB3.pdf
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 required.
Four 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 CS5484 is designed to interface 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, minimizing the time required at the end of the customer production line. Performance across temperature is ensured with an on-chip voltage reference with low drift. A single 3.3V power supply is required, and power consumption is low at <13mW. To minimize space requirements, the CS5484 is offered in a low-cost, 5mm x5mm 28-pin QFN package.
CS5484主要特性:
• 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 (25 ppm/℃ Typ.)
• Single 3.3V Power Supply
• Ultra-fine Phase Compensation
• Low Power Consumption: <13 mW
• Power Supply Configurations
- GNDA = GNDD = 0 V, VDDA = +3.3 V
• 5mmx5mm 28-pin QFN Package
圖1.CS5484方框圖
圖2.CS5484典型連接框圖(單相三線I2S電表)
CDB5484/80/90U 評估板
The CDB5484U is an extensive tool designed to evaluate the functionality and performance of Cirrus Logic’s CS5484 power/ energy measurement device.
Multiple analog input connection options, configuration input filters, direct and isolated digital interfaces, multiple power supply options, an onboard programmable microcontroller, and visual LEDs with an LCD panel make the board a flexible and powerful customer development tool for various power/energy measurement applications.
The GUI software provides easy and complete access and control to the onboard CS5484 device. It also includes the function of raw ADC data collection with time domain, frequency domain, and histogram analysis.
The board is partitioned into two main sections: analog and digital. The analog section consists of the CS5484, passive anti-aliasing filters, and a high-voltage section with attenuation resistor networks. The digital section consists of the C8051F342 microcontroller, LCD, hardware test switches, reset circuitry, and USB interface. The board also has a user-friendly power supply connection.
CDB5484U評估板主要特性:
• Standalone Power Meter Application
• Voltage and Current Interfaces
• Low- and High-voltage Sensor Connections
• Adaptable Sensor Filters Onboard
• USB Communication with PC
• UART/SPI Optically Isolated Communication
• Onboard C8051F342 Microcontroller
• Single Supply Operation USB or 5V
• Onboard DC-DC Converter and Regulator
• LCD Power Monitor Display
• LabWindows®/CVI® GUI Software
– Full Register Setup and Chip Control
– Simplified Register
– Quick Calibration Control
– FFT Analysis
– Time Domain Analysis
– Noise Histogram Analysis
• Voltage Reference Access
圖3. CDB5484U評估板外形圖
圖4. CDB5484U評估板方框圖
圖5. CDB5484U并聯(lián)傳感器電表框圖
圖6. CDB5484U電流變壓器電表框圖
圖7. CDB5484U Rogowski線圈電表框圖
圖8. CDB5484U評估板電路圖:模擬輸入
圖9. CDB5484U評估板電路圖:CS5484和插座
圖10. CDB5484U評估板電路圖:MCU和USB接口
CDB5484U評估板材料清單:
圖11. CDB5484U評估板 PCB元件布局圖:頂層
圖12. CDB5484U評估板 PCB走線圖:頂層
圖13. CDB5484U評估板 PCB走線圖:底層
詳情請見:
http://www.cirrus.com/en/pubs/proDatasheet/CS5484_F1.pdf
和
http://www.cirrus.com/en/pubs/rdDatasheet/CDB5484U_DB3.pdf
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