Related Manuals for National Semiconductor ADC14071
Summary of Contents for National Semiconductor ADC14071
- Page 1 August 2000 Rev 1 Evaluation Board Instruction Manual ADC14071 14-Bit, 7 MSPS, 390mW Analog-to-Digital Converter © 1999 National Semiconductor Corporation http://www.national.com...
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Page 3: Table Of Contents
3.5 Data Memory..................................6 3.6 Computer Interface................................6 3.7 Power requirements................................6 4.0 Installing and using the ADC14071 Evaluation Board and WaveVision Software.................. 6 4.1 Software Installation ................................7 4.2 Setting up the ADC14071 Evaluation Board ........................7 4.2.1 Board Set-up.............................. - Page 4 [Blank] http://www.national.com...
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Page 5: Introduction
Position jumpers JP4 and JP5 to their default position as indicated in Figure 1 . Position jumpers JP1, JP2 Note that the input signal to the ADC14071 should not swing below ground, or go above the ADC14071 analog supply, and JP3 opposite to their default positions. -
Page 6: Board Outputs
The data memory consists of a single 64k x 16 RAM chip, U7. obtain without the filter. This is because even the best signal Data is written to RAM from the ADC14071 by way of PLD http://www.national.com... -
Page 7: Software Installation
Perform steps 1 through 5 of Paragraph 4.2.2, above. ADC14071. The procedures given here will help you to Turn on the power to the board and press reset button properly set up the board. -
Page 8: Getting Consistent Readings
Termination Termination Termination performance of the ADC14071. From this display, the noise floor can be estimated and spurious signals can be identified. Note the display of SINAD, SNR, THD and SFDR to the right of the Table 1. Jumper settings. -
Page 9: Exploring The Waveform
PC, WaveVision displays this Click on OK. waveform on the computer monitor. You should realize that any amplifier used before the ADC14071 can affect the Connect a signal generator to input BNC J1. apparent performance of the ADC because most available Adjust the generator to provide a 5kHz to 6kHz output. -
Page 10: Rising / Falling Symmetry
You should add such a filter, if needed. frequency sine wave input to the ADC and are only accurate to the extent that the input waveform to the ADC14071 is Note that this board allows selection of a transformer or clean (contains a single frequency) and is stable. - Page 11 Power Suply Parallel Port Control, Memory and Communications & Power Supply (Figure 9) ADC Clock Single-Ended Analog Input Differential ADC14071 Reference Ref Adj Input, Reference and Test Device (Figure 8) Figure 7. Block Diagram of the ADC14071 Evaluation Board http://www.national.com...
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Page 12: Hardware Schematics
7.4 Hardware Schematics http://www.national.com... - Page 13 8 x 47 -12V BUSY EXT CLK BUSY DB25 47pF 4.7K AUTOFD INPUT AUTOFD MALE + 10uF 32 42 47 59 72 82 0.001 R106 TERM 10uF RESET Figure 9. Control, Memory, Communications and Power Supply Section of the ADC14071 Evaluation Board...
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Page 14: Bill Of Materials
TP1, TP2, TP3, TP4, TP5, TP6, TP7, TP8, TP9, Breakable Headers DigiKey # S1012-36-ND TP10, TP11, TP12, TP13 Signal Transformer MiniCircuits type T4-6T U1, U2 LM6172 National Semiconductor LM4041-ADJ National Semiconductor ADC14071 National Semiconductor NC7S04P5 Fairchild Semiconductor EPM7128ELC84-15 (Needs programming) -
Page 15: Saving And Retrieving Files
9.1 ASCII Files 9.0 Saving and Retrieving Files To export (save) an ASCII file for use later by another WaveVision allows you to save data in two formats. One is a program, such as a spreadsheet, you must enter , F, D. binary file, the other is an ASCII file. -
Page 16: Appendix - Wavevision Screens
APPENDIX - WaveVision Screens ADC14071 WaveVision Menu & Icon Description ADC14061 / ADC14161 / ADC14071 / ADC16061 WaveVision Sample 1 File Edit View Prodecure Options Window Help (same as , P, F or CTRL Acquire & Plot Data (same as... - Page 17 ADC14071 WaveVision Procedure Menu ADC14061 / ADC14161 / ADC14071 / ADC16061 WaveVision Sample 1 File Edit View Prodecure Options W indow Help Procedure Execute Ctrl+X Histog ram Ctrl+H Configure Board..Ctrl+P Send Config Ctrl+F ADC14061/ADC14161 / ADC14071 ADC16061 WaveVision Parallel Port Time Out Error.
- Page 18 ADC14071 Sampled Data and FFT Data Display Options Sampled Data display Title: This dialog box isobtained by double clicking on the sampled X Axis Units Y Axis Units data plot. Samples Converter Codes Seconds Volts It allows you to set a title for the...
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- Page 20 The ADC14071 Evaluation Board is intended for product evaluation purposes only and is not intended for resale to end consumers, is not authorized for such use and is not designed for compliance with European EMC Directive 89/336/EEC. WaveVision is a trademark of National Semiconductor Corporation. National does not assume any responsibility for use of any circuitry or software supplied or described.