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EVAL-AD7492SDZ User Guide

UG-371

Rev. 0 | Page 23 of 24

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Содержание EVAL-AD7492SDZ

Страница 1: ...on ultralow noise operational amplifier single the AD8021 low noise high speed amplifier for 16 bit systems the ADP1613 650 kHz 1 3 MHz step up PWM dc to dc switching converter with 2 0 A current limit the ADP3303 5 high accuracy anyCAP 200 mA low dropout linear regulator and the ADP2301 1 2 A 20 V 1 4 MHz nonsynchronous step down switching regulator The evaluation board features analog bias up ci...

Страница 2: ...wer Supplies 5 Parallel Interface 5 Analog Inputs 6 Reference Options 6 External Connectors 6 EVAL AD7492SDZ Basic Hardware Setup 7 Evaluation Board Software 8 Software Installation 8 Launching the Software 9 Software Operation 10 User Software Panel Description 10 Data Capture Waveform Tab 11 AC Testing Data Capture Histogram Tab 12 DC Testing Data Capture Histogram Tab 12 AC Testing Data Capture...

Страница 3: ... with the enclosed nylon screw nut set because it ensures that the boards connect firmly together 4 Connect the 9 V power supply adapter included in the kit to the J2 connecter on the EVAL AD7492SDZ board 5 Connect the EVAL SDP CB1Z board to the PC via the USB cable For Windows XP users may need to search for the EVAL SDP CB1Z drivers If prompted by the operating system choose to automatically sea...

Страница 4: ... VDRIVE is supplied externally via the J3 connector When in Position C VDRIVE is set to 3 3 V LK2 This link option selects the source of the CONVST input When this link is in Position A the CONVST input is provided by the SK2 external socket When this link is in Position B the CONVST input is provided by the EVAL SDP CB1Z board LK3 This link option determines whether the REF OUT signal from the AD...

Страница 5: ...Z in conjunction with the EVAL SDP CB1Z board connect the dc transformer to the J700 connector AVDD DVDD and VDRIVE are generated on board Each supply is decoupled on the EVAL AD7492SDZ using 10 µF and 0 1 µF capacitors A single ground plane is used on this board to minimize the effect of high frequency noise interference Table 3 External Power Supply Required Power Supply Terminal Voltage Range V...

Страница 6: ...as the input voltage The analog input buffer amplifier U3 is set as a unity gain buffer The amplifier positive rail is driven from 5 V from ADP1613 U801 that is used to drive a dual rail power supply SEPIC Cuk configuration which can be changed to a different value as required by using the external terminals on J800 LK801 and LK802 must be set to Position B to drive the amplifiers from an external...

Страница 7: ...ely connect the power supplies on the EVAL AD7492SDZ board The EVAL AD7492SDZ requires an external power supply that is included in the evaluation board kit Connect this power supply to the J702 connector on the EVAL AD7492SDZ board Alternatively a bench power supply can be used to power the EVAL AD7492SDZ via J700 Further details on the required power supply connections and options are detailed i...

Страница 8: ...D7492SDZ evaluation board software install 2 EVAL SDP CB1Z SDP board drivers install Figure 5 to Figure 9 show the steps to take to install the EVAL AD7492SDZ evaluation software Figure 10 to Figure 13 show the steps to take to install the EVAL SDP CB1Z drivers Proceed through all of the installation steps allowing the software and drivers to be placed in the appropriate locations Until the softwa...

Страница 9: ...f the PC Right click My Computer Manage System Tools Device Manager as shown in Figure 14 to find the Device Manager Analog Devices System Development Platform 32MB should appear under ADI Development Tools This now completes the installation 10493 015 Figure 14 Device Manager LAUNCHING THE SOFTWARE Once the EVAL AD7492SDZ and EVAL SDP CB1Z are correctly connected to the PC the AD7492 software can...

Страница 10: ...rdware is connected to the USB port the software automatically detects which generic is connected and displays in here Without the hardware the software can operate in standalone mode for data analysis and the part information notes the part number pulled from the saved data file 3 Sampling frequency fig says Sampling Rate The default sampling frequency matches the maximum sample rate of the ADC c...

Страница 11: ...g Data Capture FFT and Data Capture Summary sections a Waveform b Histogram c FFT d Summary To exit the software go to File Exit Within any of the chart panels the following tools allow user control of the different chart displays is used for controlling the cursor if present is used for zooming in and out is used for panning To save plots click on File Save plot DATA CAPTURE WAVEFORM TAB Figure 1...

Страница 12: ... to the ADC input and the results calculated Number 1 in Figure 18 shows the different measured values for the data captured DC TESTING DATA CAPTURE HISTOGRAM TAB More commonly the Data Capture Histogram tab is used for dc testing This is where user can test the ADC for the code distribution for dc input and compute the mean and standard deviation or transition noise of the converter and display t...

Страница 13: ...at the SMB inputs SK1 SK3 Low distortion better than 100 dB is required to allow true evaluation of the part One possibility is to filter the input signal from the ac source There is no suggested band pass filter however take consideration in this choice Furthermore if using a low frequency band pass filter when the full scale input range is more than a few volts peak to peak it is recommended to ...

Страница 14: ... Capture Summary Tab DATA CAPTURE SUMMARY TAB Figure 20 shows the Data Capture Summary tab The Data Capture Summary tab captures all the display information and provides them in one panel with a synopsis of the information including key performance parameters such as SNR and THD ...

Страница 15: ...e prompted to save to an appropriate folder location see Figure 21 LOAD FILE In the Choose file to Read Window users are prompted to load the file see Figure 22 User may have to navigate to find these example files The default location for the example files is C Program Files Analog Devices AD7492 examples 10493 022 Figure 21 Save File Dialog Box 10493 023 Figure 22 Load File Dialog Box ...

Страница 16: ...UG 371 EVAL AD7492SDZ User Guide Rev 0 Page 16 of 24 EVALUATION BOARD SCHEMATICS AND ARTWORK 10493 024 Figure 23 Schematic Page 1 10493 025 Figure 24 Schematic Page 2 ...

Страница 17: ...EVAL AD7492SDZ User Guide UG 371 Rev 0 Page 17 of 24 10493 026 Figure 25 Schematic Page 3 ...

Страница 18: ...UG 371 EVAL AD7492SDZ User Guide Rev 0 Page 18 of 24 10493 027 Figure 26 Schematic Page 4 10493 028 Figure 27 Schematic Page 5 ...

Страница 19: ...EVAL AD7492SDZ User Guide UG 371 Rev 0 Page 19 of 24 10493 029 Figure 28 Schematic Page 6 10493 030 Figure 29 Top Printed Circuit Board PCB Silkscreen ...

Страница 20: ...UG 371 EVAL AD7492SDZ User Guide Rev 0 Page 20 of 24 10493 031 Figure 30 Bottom PCB Silkscreen 10493 032 Figure 31 Layer 1 Component Side View ...

Страница 21: ...EVAL AD7492SDZ User Guide UG 371 Rev 0 Page 21 of 24 10493 033 Figure 32 Layer 2 Component Side View 10493 034 Figure 33 Layer 3 Component Side View ...

Страница 22: ...UG 371 EVAL AD7492SDZ User Guide Rev 0 Page 22 of 24 10493 035 Figure 34 Layer 4 Component Side View ...

Страница 23: ...EVAL AD7492SDZ User Guide UG 371 Rev 0 Page 23 of 24 NOTES ...

Страница 24: ...y other party for any reason Upon discontinuation of use of the Evaluation Board or termination of this Agreement Customer agrees to promptly return the Evaluation Board to ADI ADDITIONAL RESTRICTIONS Customer may not disassemble decompile or reverse engineer chips on the Evaluation Board Customer shall inform ADI of any occurred damages or any modifications or alterations it makes to the Evaluati...

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