CDB5451 Cirrus Logic Inc, CDB5451 Datasheet
CDB5451
Specifications of CDB5451
Related parts for CDB5451
CDB5451 Summary of contents
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CDB5471 Evaluation Board and Software Features Direct Shunt Sensor and Current l Transformer Interface for 3-Phase Power On-Board Voltage Reference l On-board crystal for XIN l Digital Interface Lab Windows/CVI Evaluation l Software - “Real-Time” RMS calculation ...
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TABLE OF CONTENTS 1. INTRODUCTION ....................................................................................................................... 4 1.1 CS5471 .............................................................................................................................. 4 1.2 Data Flow on Evaluation Board ......................................................................................... 4 2. HARDWARE ............................................................................................................................. 5 2.1 Evaluation Board Description ............................................................................................. 5 2.2 Power Supply Connections ................................................................................................ 5 2.2.1 Analog Power Supply ............................................................................................ ...
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LIST OF FIGURES Figure 1. Power Supply, CS5471, and Oscillator .............................................. 11 Figure 2. Analog Inputs ..................................................................................... 12 Figure 3. Digital Circuitry ................................................................................... 13 Figure 4. Start-Up Window ................................................................................ 15 Figure 5. Conversion Window ........................................................................... 16 Figure 6. Data Collection ...
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... The user can save raw data from the CS5471 to a data file, which al- lows to user to analyze performance with other tools that may be preferable to the user. 1.1 CS5471 The CS5471 is a highly integrated Two-Channel Delta-Sigma Analog-to-Digital Converter (ADC) developed for power measurement/metering appli- cations ...
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HARDWARE 2.1 Evaluation Board Description The CDB5471 board contains circuitry that will: • Accept appropriate DC voltage levels from the user’s +3V and/or +5V power supplies, and direct this power to the VA+, VD+, VA- and DGND pins of ...
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CS5471 (VD+ pin), the 4.096 MHz oscillator (U1), and circuitry for the parallel port interface. This is controlled ...
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Name Function Description Used to switch IIN3+ on the CS5471 between J2 HDR1 and AGND. Used to switch VIN3- on the CS5471 between J3 HDR2 and AGND. Used to switch VIN3+ on the CS5471 between J1 HDR3 and AGND. Used ...
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Name Function Description HDR15 Controls the source for the CS5471 XIN clock input. HDR16 This header should always be shorted. Determines whether the main analog supply will be HDR17 powered from the A- post, or from the regulated 3V voltage ...
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CS5451 by obtaining a CS5451 sample and connect it in place of the CS5471 device. Then the remaining four input channels serve as the inputs to the CS5451’s four additional input pairs. Other header options listed in Table 2 ...
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The user should recall from CS5471 Data Sheet that the serial interface on the CS5471 device is a “master-mode” interface, which means that the de- vice provides the clock. Once the CS5471 is pow- ered on, the SCLK pin produces ...
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U5 +5V TP40 CON_BANANA LM317LZ TP77 3.0V +5V_IN IN OUT 3 2 ADJ J21 C40 C42 C39 Z4 1 P6KE6V8P .1UF 10UF .1UF GND C38 Do Not Populate .33UF TANT CON_BANANA GND J18 C20 GND .1UF +3V GND HDR17 V+ ...
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J22 TP67 HDR2X2 J5 R23 301 0.1% BNC_RA C8 GND 4700PF TP66 HDR2X2 J7 R22 301 0.1% BNC_RA GND TP65 HDR2X2 J6 R21 301 0.1% BNC_RA C7 GND 4700PF TP64 HDR2X2 J8 R24 301 0.1% BNC_RA GND GND TP4 HDR2X2 ...
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HDR7X2 HDR19 1 2 OWRS 3 4 /RESET 5 6 /GAIN FSO 11 12 SCLK 13 14 SDO GND D+ SW1 R35 10K /GAIN 2 R34 10K OWRS 1 SW_DIP_2 GND /RESET R36 20K D+ ...
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SOFTWARE The evaluation software was developed with Lab Windows/CVI , a software development package from National Instruments. The software is de- signed to run under Windows 95 or later, and re- quires about hard drive space ...
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The Start-Up Window When the software first executes, the user should see the Start-Up Window appear on the user’s PC monitor. This window is shown in Figure 4. From this window, the user can navigate to three other main ...
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The results that are displayed on this screen are therefore updated after each computation cycle. ...
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Last Value The first column is labelled as “Last Value.” The value in this box represents the value of the very last instantaneous sample that was taken (for both channels) in the most recently-completed computa- tion cycle. If the ...
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... Hz) when performing an FFT analysis. The user can enter the crystal frequency that is used on the CDB5451 board into this box. The default val this box is set for the on-board 4.096MHz os- cillator. 3.2.4.4. OWRS Pin Setting: ...
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Figure 7. Configuration Window 3.2.5.3. FFT Window This box allows the user to select the type of win- dowing algorithm for FFT processing. Windowing algorithms include the Blackman, Black-Harris, Hanning, 5-term Hodie, and 7-term Hodie. The 5- term Hodie and ...
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Minimum Indicator for the minimum value of the collected data set. 3.2.8 Frequency Domain Information The following section describes the indicators as- sociated with FFT (Fast-Fourier Transform) analy- sis. Refer to Figure 8. FFT data can be plotted in ...
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Histogram Information See figure 9. The following is a description of the indicators associated with Histogram Analysis. Histogram can plotted in the Data Collection Win- dow by setting the Time Domain / FFT / Histogram selector to “Histogram.” 3.2.9.1. ...
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Figure 10. Silkscreen CDB5471 DS480DB1 ...
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DS480DB1 Figure 11. Circuit Side CDB5471 23 ...
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Figure 12. Solder Side CDB5471 DS480DB1 ...
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Notes • ...
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